Effects of Calcination Temperature on the Physical Properties and Hydrogen Evolution Activities of La 5 Ti 2 Cu(S 1-x Se x ) 5 O 7 Photocatalysts
|
|
- Cynthia Ford
- 5 years ago
- Views:
Transcription
1 FULL PAPER Photocatalysts Effects of Calcination Temperature on the Physical Properties and Hydrogen Evolution Activities of La 5 Ti 2 Cu(S 1-x Se x ) 5 O 7 Photocatalysts Swarnava Nandy, Takashi Hisatomi, Masao Katayama, Tsutomu Minegishi, and Kazunari Domen* La 5 Ti 2 Cu(S 1-x Se x ) 5 O 7 (LTCS 1-x Se x O) solid solutions are found to function as visible-light-driven photocatalysts to evolve H 2 from aqueous solutions containing sacrificial electron donors. However, this photocatalytic activity is reduced with increasing Se concentrations because of excessive particle growth during calcination at high temperatures. In the present study, the physical properties and photocatalytic H 2 evolution activities of LTCS 1-x Se x O (0 x 0.6) solid solution photocatalysts synthesized by solid-state reactions at varying temperatures are assessed. It is found that the photocatalyst particle sizes are reduced upon lowering the calcination temperature. In addition, the calcination temperature resulting in the highest photocatalytic H 2 evolution rates for NiS-loaded LTCS 1-x Se x O is shown to become lower with increasing Se content. The H 2 evolution activity of LTCS 1-x Se x O (0.2 x 0.6) is improved several-fold by optimizing the calcination temperature because the excessive growth of particles is avoided. The activity of these materials is further improved by coloading Pt and NiS cocatalysts. This work demonstrates the importance of controlling the particle size of narrow bandgap LTCS 1-x Se x O oxysulfoselenides so as to effectively utilize visible light during photocatalytic H 2 evolution. 1. Introduction Photocatalytic water splitting is an ideal means of generating clean-burning, renewable solar hydrogen on a large scale. [1 5] However, this will require the development of photocatalysts with narrow bandgaps so as to obtain effective solar energy conversion. [6 9] Semiconducting (oxy)chalcogenide materials have attracted much attention in this regard because they have narrow band gaps, and thus absorb visible light, and have the ability to produce H 2 in the presence of sacrificial electron donors. [3] In addition, certain oxysulfides have also been found to exhibit improved photocorrosion resistance compared Dr. S. Nandy, Dr. T. Hisatomi, Dr. M. Katayama, Dr. T. Minegishi, Prof. K. Domen Department of Chemical System Engineering The University of Tokyo Hongo, Bunkyo-ku, Tokyo , Japan domen@chemsys.t.u-tokyo.ac.jp The ORCID identification number(s) for the author(s) of this article can be found under DOI: /ppsc to sulfides and can evolve oxygen from aqueous solutions containing sacrificial electron acceptors. [10 14] In 2004, Meignen et al. reported La 5 Ti 2 CuS 5 O 7 (LTCSO), a semiconductor oxysulfide with an absorption edge wavelength of 650 nm. [15] LTCSO can be obtained as rod-shaped particles by solid-state reactions and exhibits 1D conductivity that reflects its crystal structure. [14,16] This material is applicable to photocatalytic and photoelectrochemical H 2 and O 2 evolution reactions with the aid of sacrificial reagents and an external power source, respectively. [14,17] The photocurrent generated by a LTCSO photocathode can be improved by increasing the particle size up to several micrometers as a result of decreases in defect densities [18] and the long-range diffusion of carriers on the order of micrometers. [19] La 5 Ti 2 Cu(S 1-x Se x ) 5 O 7 (LTCS 1-x Se x O) solid solutions can also be synthesized by solidstate reactions. [20] As with many sulfoselenide semiconductors, the absorption edge wavelength of LTCS 1-x Se x O increases with increasing Se content. [21,22] In addition, LTCS 1-x Se x O loaded with NiS functions as a photocatalyst for H 2 evolution from aqueous solutions containing Na 2 S and Na 2 SO 3 as sacrificial electron donors under visible light. However, this H 2 evolution activity is lowered with the incorporation of Se 2 ions, owing to excessive particle growth during the synthesis process. Se-rich LTCS 1-x Se x O has particle sizes exceeding 10 µm when synthesized using a calcination temperature of 1273 K, likely because selenides have lower melting points than sulfides (since metal selenide bonds are weaker than metal sulfide bonds, reflecting the larger ionic radius of Se 2 than S 2 ). [23] Because the particle size determines the distance that photoexcited carriers in the bulk of photocatalyst materials need to travel to reach active sites on the surface, excessive growth of Se-rich LTCS 1-x Se x O particles is thought to enhance charge recombination. Therefore, it is necessary to control the particle size of these LTCS 1-x Se x O materials to ensure sufficient photocatalytic activity. In the present study, LTCS 1-x Se x O (0 x 0.6) solid solutions were prepared by solid-state reactions in sealed quartz tubes, applying various calcination temperatures in an attempt (1 of 5)
2 to suppress particle growth and thereby maximize the photocatalytic activity. The effects of the calcination temperature on the physical properties and photocatalytic H 2 evolution activity were examined. 2. Result and Discussion 2.1. Physical Properties of LTCS 1-x Se x O Solid Solutions Figure 1A,B presents the X-ray diffraction (XRD) patterns and diffuse-reflectance spectroscopy (DRS) data acquired from the LTCS 0.4 Se 0.6 O samples prepared at K, respectively. A reference XRD pattern of LTCSO obtained from Inorganic Crystal Structure Database is also presented in Figure 1A. [15] Note that the diffraction peaks of LTCS 0.4 Se 0.6 O are located at lower angles because of the expansion of the unit cell. [20] The specimens calcined at K all exhibit similar XRD patterns attributable to an LTCS 0.4 Se 0.6 O phase. The lattice constants of the LTCS 1-x Se x O solid solutions follow Vegard s law. [20] Therefore, the lattice constants of LTCS 0.4 Se 0.6 O samples were calculated by Rietveld refinement as shown in Table S1 in the Supporting Information. It was found that the lattice constants and the unit cell volumes tended to be reduced with decreasing the calcination temperature slightly; suggesting differences in the anion compositions. However, variation in the values of x is estimated to be 0.01 at most taking the Vegard s law into account. LTCS 0.4 Se 0.6 O was not obtained as the major phase in the case of the sample calcined at 1073 K, suggesting the incomplete reaction of the precursors at this relatively low temperature. The DRS data show that lowering the calcination temperature below 1273 K did not affect the light absorption properties of the LTCS 0.4 Se 0.6 O; the absorption onset wavelength remained at 770 nm in each case, including the sample synthesized at 1073 K that was not purely LTCS 0.4 Se 0.6 O. XRD patterns and DRS data for LTCSO calcined at K, LTCS 0.8 Se 0.2 O calcined at K, and LTCS 0.6 Se 0.4 O calcined at K are presented in Figures S1 S3 in the Supporting Information, respectively, along with the reference XRD pattern of LTCSO. [15] In each case, LTCSO, LTCS 0.8 Se 0.2 O, and LTCS 0.6 Se 0.4 O were obtained as the major phases at all temperatures. The lattice constants of the LTCSO, LTCS 0.8 Se 0.2 O, and LTCS 0.6 Se 0.4 O samples calculated by Rietveld refinement were also presented in Tables S2 S4 in the Supporting Information. The lattice constants and the unit cell volumes tended to be reduced with decreasing the calcination temperature marginally, similarly to the LTCS 0.4 Se 0.6 O samples. The absorption onset wavelengths determined by DRS for the LTCSO, LTCS 0.8 Se 0.2 O, and LTCS 0.6 Se 0.4 O were at 660, 720, and 740 nm, respectively, and were also unaffected by changes in the calcination temperature. These results indicate the successful synthesis of LTCSO, LTCS 0.8 Se 0.2 O, and LTCS 0.6 Se 0.4 O in the respective calcination temperature windows. Figure 2 and Figures S4 S6 in the Supporting Information provide scanning electron microscope (SEM) images of the LTCS 0.4 Se 0.6 O and the other LTCS 1-x Se x O samples (x = 0, 0.2, and 0.4) prepared at various calcination temperatures, respectively. The LTCS 0.4 Se 0.6 O specimen calcined at 1273 K included particles longer than 10 µm in the longitudinal direction. The particle size was reduced as the calcination temperature was lowered from 1273 to 1123 K. In addition, the sample calcined at 1073 K did not exhibit rod-shaped particles because of the incomplete conversion of the precursors into the LTCS 0.4 Se 0.6 O phase. The particle sizes of the other LTCS 1-x Se x O samples (x = 0, 0.2, and 0.4) also tended to become smaller at lower calcination temperatures. These results indicate that the growth of LTCS 1-x Se x O particles can be suppressed without affecting the absorption edge wavelength simply by lowering the calcination temperature H 2 Evolution Activity of LTCS 1-x Se x O Solid Solutions Figure 3 shows the hydrogen evolution activity of NiS-loaded LTCS 1-x Se x O (0 x 0.6) synthesized at different calcination temperatures from aqueous Na 2 S and Na 2 SO 3 solutions, following an induction period. The corresponding H 2 evolution time courses are presented in Figure S7 in the Supporting Information. The LTCSO was modified with 1.0 wt% NiS while the other oxysulfoselenide samples were modified with 0.5 wt% NiS by in situ precipitation, using a process optimized in our previous work. [20] The LTCSO sample prepared at 1273 K showed the highest H 2 evolution rate among those specimens prepared at K. The crystalline phases and the light Figure 1. A) XRD patterns and B) DRS data for LTCS 0.4 Se 0.6 O samples calcined for 48 h at (a) 1273, (b) 1173, (c) 1123, and (d) 1073 K (2 of 5)
3 Figure 2. SEM images of LTCS 0.4 Se 0.6 O calcined for 48 h at A) 1273, B) 1173, C) 1123, and D) 1073 K. absorption properties of the samples were largely unchanged and thus would not be responsible for the observed difference in the activity (Figure S1, Supporting Information). Most likely, calcination below 1273 K was insufficient to reduce defects in LTCSO samples synthesized by solid-state reactions. Our previous study suggested that the synthesis of LTCSO under milder conditions induces defects that prevent charge transfer. [18] By contrast, the LTCSO calcined at 1323 K was accompanied by the generation of white impurities, which are thought to have affected the photocatalytic activity. The LTCS 1-x Se x O solid solutions having higher Se 2 concentrations synthesized at 1273 K exhibited lower H 2 evolution activity under visible light irradiation (λ > 420 nm). [20] However, the H 2 evolution rates were improved upon decreasing the calcination temperature below 1273 K, irrespective of the Se 2 level. The H 2 evolution rates of the LTCS 0.8 Se 0.2 O, LTCS 0.6 Se 0.4 O, and LTCS 0.4 Se 0.6 O were found to be optimized at synthesis temperatures of 1223, 1173, and 1123 K, respectively. These evolution rates were approximately three, five, and four times higher than those of conventional samples synthesized at 1273 K. LTCS 0.4 Se 0.6 O specimens prepared at 1123 and 1273 K exhibited similar XRD patterns and DRS spectra, as shown in Figure 1, although the former was composed of smaller particles. The LTCS 0.8 Se 0.2 O and LTCS 0.6 Se 0.4 O synthesized at the optimum temperatures also showed similar properties. Therefore, the higher H 2 evolution rates of LTCS 1-x Se x O (0.2 x 0.6) samples synthesized at lower temperatures are most likely associated with their smaller particle sizes. Excited charge carriers in smaller particles have shorter distances to cover when traveling from the bulk of the particles to surface active sites to participate in surface chemical reactions. They are therefore able to reach the surface before undergoing recombination more frequently than in larger particles. The LTCS 1-x Se x O samples calcined at temperatures lower than the optimal values showed lower H 2 evolution rates, most likely because of insufficient calcination, as was also the case with the LTCSO. Figure 4 presents the action spectra obtained for LTCS 0.8 Se 0.2 O and LTCS 0.6 Se 0.4 O samples synthesized at the optimum temperatures and modified with 0.5 wt% NiS. Lowering the calcination temperature evidently increased the apparent quantum yield (AQY) values without changing the photoactivity onset wavelengths. The LTCS 0.8 Se 0.2 O synthesized at 1223 K showed an AQY of 0.44% at 420 ± 10 nm, which was three times higher than that of the LTCS 0.8 Se 0.2 O calcined at 1273 K. This material was also able to utilize visible light up to 720 nm for H 2 evolution, in keeping with our previous observations. [20] The LTCS 0.6 Se 0.4 O synthesized at 1173 K also exhibited higher AQY values during the H 2 evolution reaction. These data demonstrate that the particle size can be effectively tuned for each LTCS 1-x Se x O composition by selecting the appropriate calcination temperature. The photocatalytic activity of these LTCS 1-x Se x O (0 x 0.6) solid solutions could be further enhanced by coloading with Pt and NiS, as shown in Figure S8 in the Supporting Information. [24] 3. Conclusion Figure 3. H 2 evolution activities of LTCS 1-x Se x O (0 x 0.6) solid solutions calcined for 48 h at various temperatures. Squares, circles, triangles, and inverted triangles represent LTCSO, LTCS 0.8 Se 0.2 O, LTCS 0.6 Se 0.4 O, and LTCS 0.4 Se 0.6 O. Reaction conditions: 0.2 g LTCS 1-x Se x O loaded with 1.0 wt% NiS for x = 0 and 0.5 wt% NiS for 0.2 x 0.6, 150 ml of an aqueous solution containing m Na 2 S and m Na 2 SO 3, visible light overhead irradiation with a 300 W Xe lamp through a cut-off filter (λ > 420 nm). This work studied the effects of the calcination temperature on the physical properties and photocatalytic H 2 evolution activities of LTCS 1-x Se x O solid solutions. LTCS 1-x Se x O (0.2 x 0.6) showed higher photocatalytic activity when synthesized at temperatures less than the value of 1273 K that is optimal for LTCSO. This effect is attributed to a reduction in the particle size that promotes the migration of photoexcited carriers to surface active sites, because both the crystalline phases and the absorption edge wavelengths were unchanged. The optimum temperature for maximizing the photocatalytic activity became (3 of 5)
4 Figure 4. The action spectra for A) LTCS 0.8 Se 0.2 O synthesized at (a) 1273 and (b) 1223 K, and B) LTCS 0.6 Se 0.4 O synthesized at (a) 1273 and (b) 1173 K. Reaction conditions: 0.2 g LTCS 1-x Se x O loaded with 0.5 wt% NiS, 150 ml of an aqueous solution containing m Na 2 S and m Na 2 SO 3, visible light overhead irradiation with a 300 W Xe lamp through a band pass filter. lower with increasing Se 2 content in the LTCS 1-x Se x O, reflecting changes in the relative rates of particle growth. Specifically, LTCS 0.8 Se 0.2 O, LTCS 0.6 Se 0.4 O, and LTCS 0.4 Se 0.6 O calcined at 1223, 1173, and 1123 K, respectively, exhibited H 2 evolution rates several times higher than those of a sample calcined at 1273 K under visible light irradiation. However, specimens calcined at lower temperatures were found to have lower activities, presumably because of insufficient progress of the solid-state synthesis reactions. This study highlights the importance of controlling the particle size of narrow band gap photocatalysts such as LTCS 1-x Se x O solid solutions when attempting to improve the H 2 evolution activity of such materials while harvesting longer wavelength photons. 4. Experimental Section LTCS 1-x Se x O solid solutions (0 x 0.6) were prepared by solid-state reactions in sealed quartz tubes, employing a method described in the previous report. [20] Briefly, precursors were prepared by mixing La 2 O 3 (Wako, 99.99%), La 2 S 3 (High Purity Chemicals, 99.9%), TiO 2 (rutile, Rare Metallic Co., Ltd., 99.99%), Cu 2 S (Kojundo Chemical Laboratory Co., Ltd., 99%), S (Kojundo Chemical Laboratory Co., Ltd., 99%), La (Rare Metallic Co., Ltd., 20 mesh, 99.9%), Se (grain size 2 3 mm, Nilaco Corp., 99.99%), and Cu 2 Se (Kojundo Chemical Laboratory Co., Ltd., 99.9%) in a nitrogen-filled glove box. The La 2 O 3 and TiO 2 were both freshly calcined at 1273 K for 1 h prior to use to eliminate moisture and CO 2. In the case of the S and Se, a 5% excess relative to the required stoichiometric amount was added to the precursor mixtures to suppress the formation of S and Se defects in the products. The precursor mixtures were sealed in evacuated quartz tubes and heated from room temperature to 473 K over 9 min, from 473 to 673 K over 100 min and from 673 to K at 0.2 K min 1, then maintained at their respective temperatures for 48 h. After the completion of the calcination process, each sample was ground into powder. It should be noted that the material calcined at 1323 K exhibited white impurities on the sample edges, presumably as a result of reaction with the quartz container. These impurities were removed from the sintered sample before further use. The crystal structures of the LTCS 1-x Se x O specimens were examined using XRD (RINT-UltimaIII, Rigaku; Cu Kα) and refined by the Rietveld method, employing the RIETAN-FP program. [20,25] Light absorption properties were evaluated by DRS with a UV visible-infrared spectrometer (V-670, JASCO) equipped with an integration sphere. The morphologies of the synthesized samples were observed by fieldemission scanning electron microscopy (Hitachi, S-4700). H 2 evolution reactions were conducted in a Pyrex reaction vessel connected to a closed gas circulation system. In each trial, 0.20 g of LTCS 1-x Se x O powder was suspended in 150 ml of an aqueous solution containing m Na 2 S and m Na 2 SO 3, both of which acted as sacrificial electron donors. [26] Some LTCS 1-x Se x O samples were also modified with NiS and/or Pt cocatalysts. [24] NiS was loaded by the in situ precipitation of Ni(NO 3 ) 2, following our previously reported method. [27] Herein, the loading amount of the NiS catalyst is expressed in terms of the amount of metallic Ni. Pt was loaded via photodeposition using H 2 PtCl 6. In the case that both NiS and Pt cocatalysts were coloaded, LTCS 1-x Se x O samples were first modified with Pt, after which NiS was added to the Pt-loaded LTCS 1-x Se x O, using the in situ precipitation technique. Photocatalytic water splitting reactions were conducted in reaction solutions containing the LTCS 1-x Se x O sample and S 2 /SO 3 2 as sacrificial electron donors. The reaction system was evacuated several times prior to the reaction to remove air and subsequently filled with Ar (6 kpa). The sample was irradiated with visible light (λ > 420 nm) from the top of the reaction vessel using a Xe lamp (300 W, Cermax) in conjunction with a cut-off filter. The suspension was maintained at room temperature by a flow of cooling water during this irradiation. Apparent quantum yields (AQYs, φ) were determined by exposing the reaction solutions to monochromatic light (λ = 420 ± 10 nm, 460 ± 30 nm, 540 ± 30 nm, 600 ± 30 nm, 640 ± 30 nm, 660 ± 30 nm, 680 ± 30 nm, 700 ± 30 nm, or 720 ± 30 nm) from a Xe lamp (300 W, Cermax) after completion of an induction period under visible light irradiation (λ > 420 nm). The AQYs were calculated using the equation φ (%) = AR/ I 100 (1) where A, R, and I represent the number of electrons involved in the photocatalytic reaction (for H 2 evolution, A = 2), the rate of gas evolution, and the number of incident photons, respectively. Supporting Information Supporting Information is available from the Wiley Online Library or from the author. Acknowledgements This work was financially supported by Grants-in-Aids for Scientific Research (A) (Grant Nos. 16H02417 and 17H01216) and for Young (4 of 5)
5 Scientists (A) (Grant No. 15H05494). S.N. is grateful to the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan, for financial support during his stay in Tokyo and also wishes to thank Atsushi Furuki of the University of Tokyo for assisting in the synthesis of the LTCS x Se 1-x O solid solutions. Conflict of Interest The authors declare no conflict of interest. Keywords hydrogen evolution, oxysulfoselenide, particle size, semiconductors, visible-light photocatalysis Received: July 28, 2017 Revised: September 11, 2017 Published online: November 2, 2017 [1] T. Hisatomi, J. Kubota, K. Domen, Chem. Soc. Rev. 2014, 7, [2] T. Hisatomi, K. Domen, Faraday Discuss. 2017, 198, 11. [3] K. Maeda, K. Domen, J. Phys. Chem. C 2007, 111, [4] J. Li, N. Wu, Catal. Sci. Technol. 2015, 5, [5] K. Zhang, L. Guo, Catal. Sci. Technol. 2013, 3, [6] Y. Ham, T. Hisatomi, Y. Goto, Y. Moriya, Y. Sakata, A. Yamakata, J. Kubota, K. Domen, J. Mater. Chem. A 2016, 4, [7] K. Domen, J. N. Kondo, M. Hara, T. Takata, Bull. Chem. Soc. Jpn. 2000, 73, [8] F. E. Osterloh, Chem. Mater. 2008, 20, 35. [9] Y. Inoue, Energy Environ. Sci. 2009, 2, 364. [10] A. Ishikawa, T. Takata, J. N. Kondo, M. Hara, H. Kobayashi, K. Domen, J. Am. Chem. Soc. 2002, 124, [11] A. Ishikawa, T. Takata, T. Matsumura, J. N. Kondo, M. Hara, H. Kobayashi, K. Domen, J. Phys. Chem. B 2004, 108, [12] K. Ogisu, A. Ishikawa, K. Teramura, K. Toda, M. Hara, K. Domen, Chem. Lett. 2007, 36, 854. [13] K. Ogisu, A. Ishikawa, Y. Shimodaira, T. Takata, H. Kobayashi, K. Domen, J. Phys. Chem. C 2008, 112, [14] T. Suzuki, T. Hisatomi, K. Teramura, Y. Shimodaira, H. Kobayashi, K. Domen, Phys. Chem. Chem. Phys. 2012, 40, [15] V. Meignen, L. Cario, A. Lafond, Y. Moëlo, C. Guillot-Deudon, A. Meerschaut, J. Solid State Chem. 2004, 177, [16] K. Sakata, T. Hisatomi, Y. Goto, B. Magyari-Köpe, P. Deák, T. Yamada, K. Domen, J. Phys. D: Appl. Phys. 2017, 50, [17] G. Ma, Y. Suzuki, R. B. Singh, A. Iwanaga, Y. Moriya, T. Minegishi, J. Liu, T. Hisatomi, H. Nishiyama, M. Katayama, K. Seki, A. Furube, T. Yamada, K. Domen, Chem. Sci. 2015, 6, [18] J. Liu, T. Hisatomi, M. Katayama, T. Minegishi, J. Kubota, K. Domen, J. Mater. Chem. A 2016, 4, [19] Y. Suzuki, R. B. Singh, H. Matsuzaki, A. Furube, G. Ma, T. Hisatomi, K. Domen, K. Seki, Chem. Phys. 2016, 476, 9. [20] S. Nandy, Y. Goto, T. Hisatomi, Y. Moriya, T. Minegishi, M. Katayama, K. Domen, ChemPhotoChem 2017, 1, 265. [21] S. Chen, X. G. Gong, S. Wei, Phys. Rev. B. 2007, 75, [22] J. Ge, Y. Yu, Y. Yan, J. Mater. Chem. A 2016, 4, [23] C.-H. Leung, L. H. Van Vlack, Metall. Trans. A 1981, 12A, 981. [24] S. Nandy, T. Hisatomi, G. Ma, T. Minegishi, M. Katayama, K. Domen, J. Mater. Chem. A 2017, 5, [25] F. Izumi, K. Momma, Solid State Phenom. 2007, 130, 15. [26] J. F. Reber, K. Meier, J. Phys. Chem. 1984, 88, [27] M. Tabata, K. Maeda, T. Ishihara, T. Minegishi, T. Takata, K. Domen, J. Phys. Chem. C. 2010, 114, (5 of 5)
Supporting Information
Supporting Information Dynamic Interaction between Methylammonium Lead Iodide and TiO 2 Nanocrystals Leads to Enhanced Photocatalytic H 2 Evolution from HI Splitting Xiaomei Wang,, Hong Wang,, Hefeng Zhang,,
More informationSupporting Information
Electronic Supplementary Material (ESI) for Chemical Science. This journal is The Royal Society of Chemistry 217 Supporting Information Experimental Section Materials. Dicyandiamide(DCDA, C 2 H 4 N 4,
More informationSupporting Information. CdS/mesoporous ZnS core/shell particles for efficient and stable photocatalytic hydrogen evolution under visible light
Electronic Supplementary Material (ESI) for Energy & Environmental Science. This journal is The Royal Society of Chemistry 2014 Supporting Information CdS/mesoporous ZnS core/shell particles for efficient
More informationExperimental Section
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2017 Supplementary Material (ESI) for Chemical Communications Modification of Ga 2 O 3 by Ag Cr Core
More informationSulfur-bubble template-mediated synthesis of uniform porous g-c 3 N 4 with superior photocatalytic performance
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2014 Electronic Supplementary Information Sulfur-bubble template-mediated synthesis of uniform porous
More informationSupporting Information
Supporting Information Utilization of Metal Sulfide Material of (CuGa) 1 x Zn 2x S 2 Solid Solution with Visible Light Response in Photocatalytic and Photoelectrochemical Solar Water Splitting Systems
More informationSupplementary Information for
Supplementary Information for Facile transformation of low cost thiourea into nitrogen-rich graphitic carbon nitride nanocatalyst with high visible light photocatalytic performance Fan Dong *a, Yanjuan
More informationSupporting information
Supporting information Self-doped Ti 3+ Enhanced Photocatalyst For Hydrogen Production Under Visible-light Fan Zuo, Le Wang, Tao Wu, Zhengyu Zhang, Dan Borchardt, and Pingyun Feng Department of Chemistry,
More informationSupporting Information:
Supporting Information: High Efficiency Photoelectrocatalytic Hydrogen Generation Enabled by Palladium Quantum Dots Sensitized TiO 2 Nanotube Arrays Meidan Ye, Jiaojiao Gong, Yuekun Lai, Changjian Lin,*,
More informationLow-temperature synthesis of BaTaO 2 N by an ammonothermal method
Full paper Low-temperature synthesis of BaTaO 2 N by an ammonothermal method Tatsuro TOSHIMA, Kazuhisa KISHIDA, Yuki MARUYAMA and Tomoaki WATANABE ³ Department of Applied Chemistry, School of Science and
More informationQ. Shen 1,2) and T. Toyoda 1,2)
Photosensitization of nanostructured TiO 2 electrodes with CdSe quntum dots: effects of microstructure in substrates Q. Shen 1,2) and T. Toyoda 1,2) Department of Applied Physics and Chemistry 1), and
More informationBehavior and Energy States of Photogenerated Charge Carriers
S1 Behavior and Energy States of Photogenerated Charge Carriers on Pt- or CoOx-loaded LaTiO2N Photocatalysts: Time-resolved Visible to mid-ir Absorption Study Akira Yamakata, 1,2* Masayuki Kawaguchi, 1
More informationphoto-mineralization of 2-propanol under visible light irradiation
Electronic Supplementary Information for WO 3 modified titanate network film: highly efficient photo-mineralization of 2-propanol under visible light irradiation Experimental Preparation of STN, and WO
More informationVisible-light Driven Plasmonic Photocatalyst Helical Chiral TiO 2 Nanofibers
Visible-light Driven Plasmonic Photocatalyst Ag/AgCl @ Helical Chiral TiO 2 Nanofibers Dawei Wang, Yi Li*, Gianluca Li Puma, Chao Wang, Peifang Wang, Wenlong Zhang, and Qing Wang Fig. S1. The reactor of
More informationSupplementary Information
Supplementary Information In situ ion exchange synthesis of the novel Ag/AgBr/BiOBr hybrid with highly efficient decontamination of pollutants Hefeng Cheng, Baibiao Huang*, Peng Wang, Zeyan Wang, Zaizhu
More informationElectronic Supplementary Information
Electronic Supplementary Information Formation of MS-Ag and MS (M=Pb, Cd, Zn) nanotubes via microwave-assisted cation exchange and their enhanced photocatalytic activities Yanrong Wang, a Wenlong Yang,
More informationSupplementary Figure 1. Schematic layout of set-up for operando NMR studies.
Supplementary Figure 1. Schematic layout of set-up for operando NMR studies. Supplementary Figure 2. Correlations between different ratios of D2O/H2O and 1 H chemical shifts of HDO. The spectra were acquired
More informationIn situ formation of metal Cd x Zn 1-x S nanocrystals on graphene surface: A novel method to synthesis sulfide-graphene nanocomposites
Electronic Supplementary Material (ESI) for RSC Advances. This journal is The Royal Society of Chemistry 2014 In situ formation of metal Cd x Zn 1-x S nanocrystals on graphene surface: A novel method to
More informationPolymer Semiconductors for Artificial Photosynthesis: Hydrogen Evolution by Mesoporous Graphitic Carbon Nitride with Visible Light
Polymer Semiconductors for Artificial Photosynthesis: Hydrogen Evolution by Mesoporous Graphitic Carbon Nitride with Visible Light Xinchen Wang*, Kazuhiko Maeda, Xiufang Chen, Kazuhiro Takanabe, Kazunari
More informationSupporting information for:
Supporting information for: CdTe/CdS Core/Shell Quantum Dots co-catalyzed by Sulfur Tolerant [Mo 3 S 13 ] 2- Nanoclusters for Efficient Visible Light-driven Hydrogen Evolution Dongting Yue, Xufang Qian,
More informationSchool of Engineering Science, Osaka University, Toyonaka , Japan , Japan
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 14 Platinum nanoparticles strongly associated with graphitic carbon nitride as efficient co-catalysts
More informationPublished on Web 04/06/2010
Published on Web 04/06/2010 Efficient Nonsacrificial Water Splitting through Two-Step Photoexcitation by Visible Light using a Modified Oxynitride as a Hydrogen Evolution Photocatalyst Kazuhiko Maeda,
More informationSupporting Information. Modulating the photocatalytic redox preferences between
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2016 Supporting Information Modulating the photocatalytic redox preferences between anatase TiO 2 {001}
More informationElectronic Supplementary Information
Electronic Supplementary Material (ESI) for Sustainable Energy & Fuels. This journal is The Royal Society of Chemistry 218 Electronic Supplementary Information Powder-based (CuGa 1-y In y ) 1-x Zn 2x S
More informationHydrogen Production by Photocatalytic Water Splitting
280 Journal of the Japan Petroleum Institute, 56, (5), 280-287 (2013) [Review Paper] Hydrogen Production by Photocatalytic Water Splitting Su Su Khine MA, Takashi HISATOMI, and Kazunari DOMEN Dept. of
More informationElectronic Supplementary Information. Fang He, Gang Chen,* Yaoguang Yu, Yansong Zhou, Yi Zheng and Sue Hao*
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2015 Electronic Supplementary Information Synthesis of condensed C-PDA/g-C 3 N 4 composites with superior
More informationSupporting Information. Black Brookite Titania with High Solar Absorption and. Excellent Photocatalytic Perfomance
Supporting Information Black Brookite Titania with High Solar Absorption and Excellent Photocatalytic Perfomance Guilian Zhu, a Tianquan Lin, a HaoYin, a Xujie Lü, a Wei Zhao, a Zhanqiang Liu, a and Fuqiang
More informationLocal Atomic Structure and Electronic State of ZnS Films Synthesized by Using CBD Technique
Materials Transactions, Vol. 43, No. 7 (2002) pp. 1512 to 1516 Special Issue on Grain Boundaries, Interfaces, Defects and Localized Quantum Structures in Ceramics c 2002 The Japan Institute of Metals Local
More informationElectronic Supplementary Information (ESI) Tunable Phase and Visible-Light Photocatalytic Activity
Electronic Supplementary Information (ESI) Metallic-Zinc Assistant Synthesis of Ti 3+ Self-Doped TiO 2 with Tunable Phase and Visible-Light Photocatalytic Activity Zhaoke Zheng, a Baibiao Huang,* a Xiaodong
More informationSupplementary Information. A miniature solar device for overall water splitting consisting of. series-connected spherical silicon solar cells
Supplementary Information A miniature solar device for overall water splitting consisting of series-connected spherical silicon solar cells Yosuke Kageshima 1*, Tatsuya Shinagawa 2*, Takaaki Kuwata 3,
More informationSupplementary Information
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2015 Supplementary Information Crystal defects-mediated band-gap engineering:
More informationA novel Ag 3 AsO 4 visible-light-responsive photocatalyst: facile synthesis and exceptional photocatalytic performance
Electronic Supplementary Material (ESI) for Chemical Communications Supporting Information A novel Ag 3 AsO 4 visible-light-responsive photocatalyst: facile synthesis and exceptional photocatalytic performance
More informationShuo Li, Qidong Zhao, Dejun Wang and Tengfeng Xie *
Electronic Supplementary Material (ESI) for RSC Advances. This journal is The Royal Society of Chemistry 2016 Work Function Engineering Derived All-solid-state Z-scheme Semiconductor-Metal-Semiconductor
More informationSynthesis of 2 ) Structures by Small Molecule-Assisted Nucleation for Plasmon-Enhanced Photocatalytic Activity
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2015 Electronic Supplementary Information Synthesis of Au@UiO-66(NH 2 ) Structures by Small Molecule-Assisted
More informationSupplementary Information
Supplementary Information Visible Photocatalytic Water Splitting and Photocatalytic Two-Electron Oxygen Formation over Cu and Fe Doped g-c 3 N 4 Zhen Li a,b, Chao Kong a,b, Gongxuan Lu a* a State Key Laboratory
More informationGraphene is a single, two-dimensional nanosheet of aromatic sp 2 hybridized carbons that
Chemical Identity and Applications of Graphene-Titanium Dioxide Graphene is a single, two-dimensional nanosheet of aromatic sp 2 hybridized carbons that enhances the performance of photocatalysts. 1 The
More informationph-depending Enhancement of Electron Transfer by {001} Facet-Dominating TiO 2 Nanoparticles for Photocatalytic H 2 Evolution under Visible Irradiation
S1 ph-depending Enhancement of Electron Transfer by {001} Facet-Dominating TiO 2 Nanoparticles for Photocatalytic H 2 Evolution under Visible Irradiation Masato M. Maitani a *, Zhan Conghong a,b, Dai Mochizuki
More informationInternational Journal of Scientific & Engineering Research, Volume 5, Issue 3, March-2014 ISSN
156 Copper Nanoparticles: Green Synthesis Characterization Y.Suresh*1, S.Annapurna*2, G.Bhikshamaiah*3, A.K.Singh#4 Abstract Present work describes the synthesis nanoparticles using papaya extract as a
More informationRESULTS AND DISCUSSION Characterization of pure CaO and Zr-TiO 2 /CaO nanocomposite
RESULTS AND DISCUSSION 4.1. Characterization of pure CaO and Zr-TiO 2 /CaO nanocomposite 4.1.1. Scanning electron microscopy analysis (SEM) SEM images of prepared CaO are shown in Fig. 4.1 (a and b). CaO
More informationElectronic Supporting Information
Electronic Supporting Information Enhancing photocatalytic activity of graphitic carbon nitride by co-doping with P and C for efficient hydrogen generation Hao Wang, a Bo Wang, a Yaru Bian, a Liming Dai
More informationScientific report 2016 January September. Designing composite nanoarchitectures for hydrogen production and environmental depollution
Scientific report 2016 January September Designing composite nanoarchitectures for hydrogen production and environmental depollution Synthesis of the spherical Pt nanoparticles We have chosen to synthesize
More informationBand gap narrowing for visible light active photocatalysts: Is it really narrowing?
Band gap narrowing for visible light active photocatalysts: Is it really narrowing? Suresh Pillai Nanotechnology Research Group, Institute of Technology, Sligo 16/06/2015 A Chemist s view of band-gap structure
More informationA novel AgIO 4 semiconductor with ultrahigh activity in photodegradation of organic dyes: insights into the photosensitization mechanism
Supporting Information for: A novel AgIO 4 semiconductor with ultrahigh activity in photodegradation of organic dyes: insights into the photosensitization mechanism Jianting Tang*, Datang Li*, Zhaoxia
More informationCHAPTER 4. SYNTHESIS, CHARACTERIZATION OF TiO 2 NANOTUBES AND THEIR APPLICATION IN DYE SENSITIZED SOLAR CELL
93 CHAPTER 4 SYNTHESIS, CHARACTERIZATION OF TiO 2 NANOTUBES AND THEIR APPLICATION IN DYE SENSITIZED SOLAR CELL 4.1 INTRODUCTION TiO 2 -derived nanotubes are expected to be applicable for several applications,
More informationSupporting Information
Supporting Information German Edition: DOI: High Catalytic Activity of Heteropolynuclear Cyanide Complexes Containing Cobalt and Platinum Ions: Visible-Light Driven Water Oxidation** Yusuke Yamada,* Kohei
More informationLaurea in Scienza dei Materiali Materiali Inorganici Funzionali. Hydrogen production by photocatalytic water splitting
Laurea in Scienza dei Materiali Materiali Inorganici Funzionali Hydrogen production by photocatalytic water splitting Prof. Dr. Antonella Glisenti -- Dip. Scienze Chimiche -- Università degli Studi di
More informationSupporting Information
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2017 Supporting Information First example of oxide semiconductor photocatalyst
More informationSupporting Information. Graphene Oxide-Palladium Modified Ag-AgBr: A Novel Visible-Light- Responsive Photocatalyst for the Suzuki Coupling Reaction**
Electronic Supplementary Material (ESI) for RSC Advances. This journal is The Royal Society of Chemistry 2014 Supporting Information Graphene Oxide-Palladium Modified Ag-AgBr: A Novel Visible-Light- Responsive
More informationSynthesis of nano-sized anatase TiO 2 with reactive {001} facets using lamellar protonated titanate as precursor
Supporting Information Synthesis of nano-sized anatase TiO 2 with reactive {001} facets using lamellar protonated titanate as precursor Liuan Gu, Jingyu Wang *, Hao Cheng, Yunchen Du and Xijiang Han* Department
More informationRational design of light-directed dynamic spheres
Electronic Supplementary Information (ESI) Rational design of light-directed dynamic spheres Yumi Okui a and Mina Han* a,b a Department of Chemistry and Department of Electronic Chemistry Tokyo Institute
More informationVisible Light Assisted Photocatalytic Hydrogen Generation and Organic Dye Degradation by CdS Metal Oxide hybrids in presence of Graphene Oxide
Visible Light Assisted Photocatalytic Hydrogen Generation and Organic Dye Degradation by CdS Metal Oxide hybrids in presence of Graphene Oxide Ziyauddin Khan, Tridip Ranjan Chetia, Anil Kumar Vardhaman,
More informationHYDROTHERMAL SYNTHESIS OF NiS/CdS NANOCOMPOSITES WITH ENHANCED VISIBLE-LIGHT PHOTOCATALYTIC PERFORMANCE
Chalcogenide Letters Vol. 13, No. 6, June 2016, p. 265-270 HYDROTHERMAL SYNTHESIS OF NiS/CdS NANOCOMPOSITES WITH ENHANCED VISIBLE-LIGHT PHOTOCATALYTIC PERFORMANCE D. WU a, F. WANG b,c, J. XIA a, F. CAO
More informationSupporting Information
Copyright WILEY-VCH Verlag GmbH & Co. KGaA, 69469 Weinheim, Germany, 2014. Supporting Information for Adv. Mater., DOI: 10.1002/adma.201305299 Nitrogen-Doped Graphene Oxide Quantum Dots as Photocatalysts
More informationPhotocatalysis and solar hydrogen production*
Pure Appl. Chem., Vol. 79, No. 11, pp. 1917 1927, 2007. doi:10.1351/pac200779111917 2007 IUPAC Photocatalysis and solar hydrogen production* Akihiko Kudo 1,2 1 Department of Applied Chemistry, Tokyo University
More informationBiS 2 - based superconductivity in F-substituted NdOBiS 2
BiS 2 - based superconductivity in F-substituted NdOBiS 2 Satoshi Demura, 1,2 Yoshikazu Mizuguchi, 1,3 Keita Deguchi, 1,2 Hiroyuki Okazaki, 1 Hiroshi Hara, 1,2 Tohru Watanabe, 1,2 Saleem James Denholme,
More informationSupporting Information
Supporting Information Enhanced Activity and Stability of Carbon-Decorated Cuprous Oxide Mesoporous Nanorods for CO 2 Reduction in Artificial Photosynthesis Luo Yu a, Guojian Li a, Xiaoshu Zhang a, Xin
More informationSupporting Information
Supporting Information Au 25 -Loaded BaLa 4 Ti 4 O 15 Water-Splitting Photocatalyst with Enhanced Activity and Durability Produced Using New Chromium Oxide Shell Formation Method Wataru Kurashige, 1 Rina
More informationPhotocatalytic degradation of methylene blue and crystal violet by sulfur/reduced graphene oxide composite
Photocatalytic degradation of methylene blue and crystal violet by sulfur/reduced graphene oxide composite RahmatollahRahimi, MahsaMoshari, MahboubehRabbani Department of Chemistry, Iran University of
More informationPhotoeletrochemical properties of LaTiO 2 N electrodes prepared by particle transfer for sunlight-driven water splitting
10 15 Photoeletrochemical properties of LaTiO 2 N electrodes prepared by particle transfer for sunlight-driven water splitting 5 Tsutomu Minegishi, a Naoyuki Nishimura, a Jun Kubota, a and Kazunari Domen*
More informationEfficient Visible Light Photocatalytic CO 2 Reforming of CH 4
SUPPORTING INFORMATION Efficient Visible Light Photocatalytic CO 2 Reforming of CH 4 Bing Han, Wei Wei, Liang Chang, Peifu Cheng, and Yun Hang Hu* Department of Materials Science and Engineering, Michigan
More informationStructure of PbBi 2 Nb 2 O 9 and Its Cr-Doped Layered Perovskite System and Their Photocatalytic Activities
Journal of the Korean Physical Society, Vol. 51, July 2007, pp. S27 S31 Structure of PbBi 2 Nb 2 O 9 and Its Cr-Doped Layered Perovskite System and Their Photocatalytic Activities S. J. Hong, P. H. Borse,
More informationdriving agent and study of photocatalytic activity Mohammad Salehi Department of Chemistry, Iran University of Science and Technology, Narmak, Tehran
A simplified microwave-assisted synthesis of NiMoO 4 nanoparticles by using organic driving agent and study of photocatalytic activity Azadeh Tadjarodi *, Raheleh Pradehkhorram, Mina Imani, Samaneh Ebrahimi,
More informationSupporting Information for. Photoactive PANI/TiO 2 /Si Composite Coatings With 3D Bio-inspired. Structures
Electronic Supplementary Material (ESI) for New Journal of Chemistry. This journal is The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2017 Supporting Information for
More informationarxiv: v1 [cond-mat.supr-con] 9 May 2013
Journal of the Physical Society of Japan LETTERS Superconductivity in Tetragonal LaPt 2 x Ge 2+x arxiv:135.224v1 [cond-mat.supr-con] 9 May 213 Satoki Maeda 1, Kazuaki Matano 1, Hiroki Sawaoka 1, Yoshihiko
More informationHetero-crystals with Enhanced Photocatalytic Properties and Stabilities
Supporting Information for Facile Synthesis of Rhombic Dodecahedral AgX/Ag 3 PO 4 (X=Cl, Br, I) Hetero-crystals with Enhanced Photocatalytic Properties and Stabilities Yingpu Bi, Shuxin Ouyang, Junyu Cao,
More informationTitle. CitationChemical Physics Letters, 392(1-3): Issue Date Doc URL. Type. File Information.
Title Light intensity dependence of the action spectra of Author(s)Torimoto, Tsukasa; Aburakawa, Yousuke; Kawahara, Yoi CitationChemical Physics Letters, 392(1-3): 220-224 Issue Date 2004-07-01 Doc URL
More informationANTIMONY ENHANCED HOMOGENEOUS NITROGEN INCORPORATION INTO GaInNAs FILMS GROWN BY ATOMIC HYDROGEN-ASSISTED MOLECULAR BEAM EPITAXY
ANTIMONY ENHANCED HOMOGENEOUS NITROGEN INCORPORATION INTO GaInNAs FILMS GROWN BY ATOMIC HYDROGEN-ASSISTED MOLECULAR BEAM EPITAXY Naoya Miyashita 1, Nazmul Ahsan 1, and Yoshitaka Okada 1,2 1. Research Center
More informationControlling Interfacial Contact and Exposed Facets for. Enhancing Photocatalysis via 2D-2D Heterostructure
Electronic Supplementary Material (ESI) for Chemical Communications. This journal is The Royal Society of Chemistry 2015 Electronic Supplementary Information Controlling Interfacial Contact and Exposed
More informationefficient wide-visible-light photocatalysts to convert CO 2 and mechanism insights
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2018 Electronic Supplementary Information Dimension-matched plasmonic Au/TiO
More informationTemplate-Induced High-Crystalline g-c 3 N 4 Nanosheets for. Enhanced Photocatalytic H 2 Evolution
Template-Induced High-Crystalline g-c 3 N 4 Nanosheets for Enhanced Photocatalytic H 2 Evolution Weinan Xing, Wenguang Tu, Zhonghui Han, Yidong Hu, Qingqiang Meng, Gang Chen, * MIIT Key Laboratory of Critical
More informationPhotodecomposition of Water Catalyzed by Zr- and Ti-MCM-41
ESO 25(6) #7759 Energy Sources, 25:591 596, 2003 Copyright 2003 Taylor & Francis 0090-8312/03 $12.00 +.00 DOI: 10.1080/00908310390195651 Photodecomposition of Water Catalyzed by Zr- and Ti-MCM-41 S.-H.
More informationEfficient Co-Fe layered double hydroxide photocatalysts for water oxidation under visible light
Supplementary Information Efficient Co-Fe layered double hydroxide photocatalysts for water oxidation under visible light Sang Jun Kim, a Yeob Lee, a Dong Ki Lee, a Jung Woo Lee a and Jeung Ku Kang* a,b
More informationEvolution of superconductivity in LaO 1-x F x BiS 2 prepared by high pressure technique
Evolution of superconductivity in LaO 1-x F x BiS 2 prepared by high pressure technique K. Deguchi 1,2,3, Y. Mizuguchi 1,2,4, S. Demura 1,2,3, H. Hara 1,2,3, T. Watanabe 1,2,3, S. J. Denholme 1,2, M. Fujioka
More informationResearch Article Ammonothermal Synthesis and Photocatalytic Activity of Lower Valence Cation-Doped LaNbON 2
Advances in Materials Science and Engineering, Article ID 465720, 5 pages http://dx.doi.org/10.1155/2014/465720 Research Article Ammonothermal Synthesis and Photocatalytic Activity of Lower Valence Cation-Doped
More informationROLE OF COPRECIPITATED NiS-ZnS IN PHOTOCATALYTIC DEGRADATION OF ALIZARIN RED S
Int. J. Chem. Sci.: 8(2), 2010, 961-968 ROLE OF COPRECIPITATED NiS-ZnS IN PHOTOCATALYTIC DEGRADATION OF ALIZARIN RED S VIJAYA SHARMA, NEELAM GANDHI, ANKUR KHANT and R. C. KHANDELWAL * Department of Chemistry,
More informationSurface modification of the CoO x loaded BiVO 4 photoanodes with ultrathin p-type NiO layers for the improved solar water oxidation
Supporting Information Surface modification of the CoO x loaded BiVO 4 photoanodes with ultrathin p-type NiO layers for the improved solar water oxidation Miao Zhong, Takashi Hisatomi, Yongbo Kuang, Jiao
More informationTwo-dimensional dendritic Ag 3 PO 4 nanostructures and their photocatalytic properties
Supporting Information for Two-dimensional dendritic Ag 3 PO 4 nanostructures and their photocatalytic properties Yingpu Bi, *a Hongyan Hu, a Zhengbo Jiao, a Hongchao Yu, a Gongxuan Lu, a and Jinhua Ye
More informationSYNTHESIS OF CADMIUM SULFIDE NANOSTRUCTURES BY NOVEL PRECURSOR
Nanomaterials: Applications and Properties (NAP-2011). Vol. 1, Part I 107 SYNTHESIS OF CADMIUM SULFIDE NANOSTRUCTURES BY NOVEL PRECURSOR M. Salavati Niasari 1,2* 1 Department of Inorganic Chemistry, Faculty
More informationMillimeter-Thick Single-Walled Carbon Nanotube Forests: Hidden Role of Catalyst Support
Millimeter-Thick Single-Walled Carbon Nanotube Forests: Hidden Role of Catalyst Support Suguru Noda 1*, Kei Hasegawa 1, Hisashi Sugime 1, Kazunori Kakehi 1, Zhengyi Zhang 2, Shigeo Maruyama 2 and Yukio
More informationExperimental details. General
Experimental details General TiO 2 P25 was purchased from Degussa; methyl methacrylate (MMA, 99%), 2,2 -azobis(2- methylpropionamidine) dihydrochloride (97%), titanium (IV) isopropoxide (97%), concentrated
More informationEffects of Crystal Structure on Microwave Dielectric Properties of Ceramics
Journal of the Korean Ceramic Society Vol. 5 No. 5 pp. 5~55 008. Review Effects of Crystal Structure on Microwave Dielectric Properties of Ceramics Eung Soo Kim Chang Jun Jeon Sung Joo Kim and Su Jung
More informationSynthesis of Highly Concentrated Ag Nanoparticles in a Heterogeneous Solid-Liquid System under Ultrasonic Irradiation
Materials Transactions, Vol. 51, No. 10 (2010) pp. 1764 to 1768 Special Issue on Lead-Free and Advanced Interconnection Materials for Electronics #2010 The Japan Institute of Metals Synthesis of Highly
More informationPreparation of Carbon-Coated TiO 2 at Different Heat Treatment Temperatures and Their Photoactivity
Carbon Science Vol. 7, No. 4 December 2006 pp. 259-265 Preparation of Carbon-Coated TiO 2 at Different Heat Treatment Temperatures and Their Photoactivity Ming-Liang Chen 1, Jang-Soon Bae 2 and Won-Chun
More informationPREPARATION, CHARACTERISATION AND PHOTOCATALYTIC ACTIVITY OF TERNARY GRAPHENE-Fe 3 O 4 :TiO 2 NANOCOMPOSITES
Digest Journal of Nanomaterials and Biostructures Vol. 13, No. 2, April - June 2018, p. 499-504 PREPARATION, CHARACTERISATION AND PHOTOCATALYTIC ACTIVITY OF TERNARY GRAPHENE-Fe 3 O 4 :TiO 2 NANOCOMPOSITES
More informationIn 2 O 3 /TiO 2 nano photocatalysts for solar hydrogen production from methanol:water mixtures
Indian Journal of Chemistry Vol. 53A, April-May 04, pp. 47-477 In O 3 /TiO nano photocatalysts for solar hydrogen production from methanol:water mixtures K Lalitha, V Durga Kumari* & M Subrahmanyam Inorganic
More informationTemperature dependence of electrocatalytic and. photocatalytic oxygen evolution reaction rates
Supporting information Temperature dependence of electrocatalytic and photocatalytic oxygen evolution reaction rates using NiFe oxide Ela Nurlaela, Tatsuya Shinagawa, Muhammad Qureshi, Dattatray S. Dhawale,
More informationPhotocatalytic degradation of 4-nitrophenol in aqueous N, S-codoped TiO 2 suspensions
Photocatalytic degradation of 4-nitrophenol in aqueous N, S-codoped TiO 2 suspensions Rahmatollah Rahimi, Samaneh Safalou moghaddam, Mahboubeh Rabbani Department of Chemistry, Iran University of Science
More informationElectronic Supplementary Information. Precursor Salt Assisted Syntheses of High-Index Faceted Concave Hexagon and Nanorod like Polyoxometalates
Electronic Supplementary Material (ESI) for Nanoscale. This journal is The Royal Society of Chemistry 2014 Electronic Supplementary Information Precursor Salt Assisted Syntheses of High-Index Faceted Concave
More informationThe Chemical Control of Superconductivity in Bi 2 Sr 2 (Ca 1 x Y x )Cu 2 O 8+±
CHINESE JOURNAL OF PHYSICS VOL. 38, NO. 2-II APRIL 2000 The Chemical Control of Superconductivity in Bi 2 Sr 2 (Ca 1 x Y x )Cu 2 O 8+± R. S. Liu 1, I. J. Hsu 1, J. M. Chen 2, and R. G. Liu 2 1 Department
More informationSupporting Information
Supporting Information Wiley-VCH 2014 69451 Weinheim, Germany Surfactant-Free Nonaqueous Synthesis of Plasmonic Molybdenum Oxide Nanosheets with Enhanced Catalytic Activity for Hydrogen Generation from
More informationDual Extraction of Photogenerated Electrons and Holes from a Ferroelectric Sr 0.5 Ba 0.5 Nb 2 O 6 Semiconductor
Supporting Information Dual Extraction of Photogenerated Electrons and Holes from a Ferroelectric Sr 0.5 Ba 0.5 Nb 2 O 6 Semiconductor Dayong Fan,, Jian Zhu,, Xiuli Wang, Shengyang Wang,, Yong Liu,, Ruotian
More informationPhotoelectrochemical CO 2 reduction using a Ru(II)-Re(I) multinuclear metal complex on a p-type semiconducting NiO electrode
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2015 Photoelectrochemical CO 2 reduction using a Ru(II)-Re(I) multinuclear metal complex on a p-type
More informationThe absence of standardization in both the measurement
pubs.acs.org/acscatalysis Reporting of Reactivity for Heterogeneous Photocatalysis Israel E. Wachs,* Somphonh P. Phivilay, and Charles A. Roberts Operando Molecular Spectroscopy & Catalysis Laboratory,
More informationSupplementary Information 1. Enhanced Solar Absorption, Visible-Light Photocatalytic and. Photoelectrochemical Properties of Aluminium-reduced
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2017 Supplementary Information to Enhanced Solar Absorption, Visible-Light Photocatalytic and Photoelectrochemical
More informationPhotocatalysis: semiconductor physics
Photocatalysis: semiconductor physics Carlos J. Tavares Center of Physics, University of Minho, Portugal ctavares@fisica.uminho.pt www.fisica.uminho.pt 1 Guimarães Where do I come from? 3 Guimarães 4 Introduction>>
More informationElectronic supplementary information. A longwave optical ph sensor based on red upconversion
Electronic Supplementary Material (ESI) for RSC Advances. This journal is The Royal Society of Chemistry 2014 Electronic supplementary information A longwave optical ph sensor based on red upconversion
More informationNew Li-Ethylenediamine-Intercalated Superconductor Li x (C 2 H 8 N 2 ) y Fe 2-z Se 2 with T c = 45 K
New Li-Ethylenediamine-Intercalated Superconductor Li x (C 2 H 8 N 2 ) y Fe 2-z Se 2 with T c = 45 K Takehiro Hatakeda, Takashi Noji, Takayuki Kawamata, Masatsune Kato, and Yoji Koike Department of Applied
More informationSynchrotron powder X-ray diffraction and structural analysis of Eu0.5La0.5FBiS2-xSex
Synchrotron powder X-ray diffraction and structural analysis of Eu0.5La0.5FBiS2-xSex K. Nagasaka 1, G. Jinno 1, O. Miura 1, A. Miura 2, C. Moriyoshi 3, Y. Kuroiwa 3, Y. Mizuguchi 1 * 1. Department of Electrical
More informationFacet Effect of Single-Crystalline Ag 3 PO 4 Sub-microcrystals on Photocatalytic Properties. Experimental Section
Supporting Information for Facet Effect of Single-Crystalline Ag 3 PO 4 Sub-microcrystals on Photocatalytic Properties Yingpu Bi, Shuxin Ouyang, Naoto Umezawa, Junyu Cao, and Jinhua Ye* International Center
More informationSubstitution Effects of the Trivalent Cations M 3þ on the Photophysical and Photocatalytic Properties of In 12 NiM 2 Ti 10 O 42 (M = Al, Cr, Ga)
Materials Transactions, Vol. 46, No. 12 (2005) pp. 2699 to 2703 Special Issue on Growth of Ecomaterials as a Key to Eco-Society II #2005 The Japan Institute of Metals Substitution Effects of the Trivalent
More information