Morphological and Dimensional Properties of Colloidal Silver Nanoparticles Prepared Under Microwave Irradiation
|
|
- Abigayle Griffith
- 6 years ago
- Views:
Transcription
1 Advanced Materials and Research Vol (2015) pp (2015) Trans Tech Publications, Switzerland doi: / Morphological and Dimensional Properties of Colloidal Silver Nanoparticles Prepared Under Microwave Irradiation Harjono 1,2,a and Yoki Yulizar 2,b 1 Department of Chemistry, Faculty of Mathematics and Natural Sciences, Semarang State University, Kampus Unnes Sekaran, Gunungpati, Semarang, Central Java 50229, Indonesia 2 Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Kampus Baru UI Depok 16424, Indonesia a harjono_hanis@yahoo.com, b yokiy@ui.ac.id Keywords:Morphological-and-Dimensional-Properties,Colloidal-Silver-Nanoparticles,Microwave-Irr adiation. Abstract. In this paper we report the effect of irradiation time on the morphological and dimensional properties of colloidal silver nanoparticles (AgNPs) using sodium citrate and silver nitrate as reductant and oxidant, respectively under microwave irradiation. The prepared NPs were characterized by UV vis spectroscopy, Particle size analyzer (PSA), transmission electron microscopy (TEM) and selected areas electron diffraction (SAED). The formation of Ag NPs was confirmed by the appearance of a surface plasmon absorption between nm. PSA showed that the colloidal nanoparticles had a diameters ranging from nm. TEM images showed that the diameter of the silver nanoparticles in accordance with the results obtained using PSA. The rings patterns are in good agreement with the standard values of the facecentered-cubic form of silver nanocrystals. Introduction Silver nanoparticles have significant properties in the application of consumer products, food technology (for example: food processing equipment, food packaging, food storage unit), textiles (clothing antimicrobial), and medical applications [1] (e.g. aids products medical, surgical equipment). Silver nanoparticles also have unique physical and optical properties which are not present in the form of bulk metal, and claimed to have great potential for broader medical applications such as: diagnostics, drug delivery, and sensors. Synthesis of nanoparticles in solution (colloidal solution) requires the use of methods that can precisely control the size and shape of the nanoparticles to produce a set of dispersion of nanoparticles with specific properties. In general, the synthesis of metal nanoparticles in solution is done by using the following components: a) precursor, b) a reducing compound, and c) compound stabilizers [2,3]. The mechanism of the formation of a colloidal solution of silver ions reduction of (I) consists of two stages: nucleation and growth. Nucleation stage requires a high activation energy, whereas the growth stage requires a low activation energy. The size and shape of nanoparticles will depend on the relative speed of the process that can be controlled by setting the reaction parameters (concentration, temperature, ph, and reducing power). The process of preparation of colloidal silver nanoparticles has been the subject of a large number of researchers in many laboratories [4,5]. Ag Nanoparticles can be synthesized using various methods: laser irradiation, sonolectrochemical [6], photochemical reduction, laser ablation technique [7,8]; chemical reduction of metal salt [9], and recently via bio- or green-synthesis route [10]. Microwave irradiation is a novel method to accelerated the preparation of inorganic nanoparticles as well as various nanostructures such us nanotubes, nanorods, and nanowire [11]. The method in which nanoparticles can be synthesized by the reaction between the metal salt and a reducing compound is the most preferred technique. Therefore, in the synthesis of silver nanoparticles from AgNO3 using weak reducing compounds such as ascorbic acid, polyol, and monosaccharides
2 Advanced Materials Research Vol widely reported [12,13]. Synthesis of silver nanoparticles using Tollens method also allows to be done, where this method has long been used to produce thin-film coating of silver by electrolytic deposition. There are many synthetic routes that have been developed to synthesize AgNPs due to the applications found tremendously in wide range of fields. Chemical reduction methods is widely used to synthesize AgNPs because of its readiness to generate AgNPs under gentle conditions and its ability to synthesize AgNPs on a large scale [14,15]. The eco-friendly biosynthesis of AgNPs is also a concern of many experts lately because it has the advantage of being more environmentally friendly [16,17]. In the present study, we attempted to synthesize AgNPs using the microwave irradiation technique with sodium citrate as a reducing agent and AgNO3 as precursor. This work reports the effect of sodium citrate concentrations and irradiation time on the morphological and dimensional properties of colloidal silver nanoparticles (AgNPs). The prepared NPs were characterized by UV vis spectroscopy, Particle size analyzer (PSA), transmission electron microscopy (TEM) and selected areas electron diffraction (SAED). Material and Method Chemicals. All the experiments were conducted at room temperature % pure silver nitrate (AgNO3), and Sodium Citrate are purchased from Sigma Aldrich,. Household Microwave (Carrefour product) of fixed freq GHz, power source 1400W and power consumption 900 W was used for the synthesis of AgNPs. Synthesis of Colloidal Silver Nanoparticles. The preparation of AgNPs under microwave irradiation is quite directly forward. In a typical synthesis, 10 ml AgNO3 1 x 10-3M was added to 1 ml sodium citrate 1% (w/w) in erlenmeyer flask. The mixture was then put into the microwave with a variation of heating time (145s, 180s, 210s, 215S and 240s). Reaction products were characterized by using UV-Vis spectrophotometer at a wavelength ( ) nm to determine the absorption spectra, and the value max. PSA characterization carried out to determine the particle size. Methods. The formation of the colloidal silver nanoparticles was monitored using UV Vis spectroscopy by employing a Photolab 6600 UV-Vis spectrophotometer operated on nm wavelength. UV Vis analysis of the reaction mixture was observed for a period of 240 s. Distilled water was used as a solvent for UV study. The transmission electron microscopy (TEM) image of the sample was obtained using JEOL Model JEM-1400 instrument. Sample for TEM analysis were prepared by coating of aqueous AgNPs drops on carbon-coated copper grids, kept for 5 min; the extra solution was removed using blotting paper. The film of the TEM grid is dried by exposed to IR light. Results and Discussion Fig. 1 shows TEM micrographs with different magnifications of citrate-agnps, which were prepared by citrate reduction under microwave irradiation. The particles are in broad size distribution from 17 to 59 nm with an average size of 41 nm. In the first method, the aqueous AgNO 3 solution was treated with sodium citrate under microwave irradiation. The use of microwave heating is intended to speed up the reaction time with the same results than the use of conventional heating. Absorption spectrum UV-Vis has urgency in explaining the formation of silver nanoparticles. Silver nanoparticles give the characteristic absorption peak at a wavelength of around 410 nm. The TEM features clearly reveal that these particles are separated and are not uniform. Similar to that described by Van Dong and Coworkers [9], the mechanism of the reaction in this method could be expressed as follows: 4Ag + + C 6 H 5 O 7 Na 3 + 2H 2 O 4 Ag 0 + C 6 H 5 O 7 H 3 + 3Na + + H + + O 2 The colloidal silver nanoparticles formed by the process above remain in suspension by their mutual electrostatic repulsion generated and maintained by a net negative charge on their surface.
3 140 Material Science and Engineering Technology III (a) (b) (c) Fig. 1 (a and b) TEM Image of synthesized silver nanoparticles as citrate-agnps, (c) SAED pattern of the nanoparticles Effect of Microwave irradiation time The difference in times of microwave irradiation was conducted to determine the optimal heating time to produce colloidal silver nanoparticles. In this study, the heating times were chosen for observation are: 145s, 180s, 210s, 215S and 240s. Based on the results of previous research done by the author, irradiation time less than 145 seconds does not produce colloidal silver nanoparticles were characterized by the color of the reaction mixture is clear, while the irradiation time more than 240 seconds produces dark red reaction mixture indicating colloidal silver nanoparticles have agglomerated. Fig. 2 shows the UV-vis absorbance spectra of the colloidal AgNPs synthesized using AgNO 3 as precursor and natrium citrate as reductant under microwave irradiation at several irradiation times. Fig. 2. UV-Visible absorption spectra recorded at 25 o C of the AgNPs at different irradiation times (in seconds). Reaction condition: [sodium citrate]=1% (w/v), [Ag + ]=1x10-3 M. UV-Vis spectra (Fig. 2) shows the irradiation time affects the maximum wavelength of colloidal nanoparticles. The main advantages of microwave assisted methods over conventional synthetic methods are increase in the kinetics of reaction by two orders of magnitude, rapid initial heating and generation of localized heat at reaction sites, thereby increasing the rate reaction [18,19].
4 Advanced Materials Research Vol Fig. 3. Effects of irradiation time on the surface plasmon absorbance and the maximum wavelength ( max ) of colloidal silver nanoparticles Based on the data shown in Fig. 3, the synthesis of silver nanoparticles with irradiation time of 145 seconds produces the smallest max = 411nm with a value of absorbance, while the largest absorbance value 2.16 with max = 419 nm achieved at irradiation time of 210 seconds. These results indicate the formation of silver nanoparticles reaction has not been completed in 145 seconds irradiation time due to low absorbance values. However, when the irradiation time reaches 210 seconds or more, absorbance reaches the highest value (2.61) and then decreased with increasing irradiation time, based on these results, it can be presumed that silver nanoparticles undergo a process of agglomeration after passing through the optimum irradiation time. Fig. 4.Volume density (%) spectra of of the AgNPs at different irradiation times. Reaction condition: [sodium citrate]=1% (w/v), [Ag + ]=1x10-3 M. The TEM Image that was shown in Fig. 1 corresponds to their particle size distribution data of AgNPs at different periods of irradiation time in Fig. 4. Data from the PSA measurement showed that the synthesis of silver nanoparticles by microwave irradiation of more than 210 seconds tend to produce large-sized silver nanoparticles presumably due to the agglomeration process. Meanwhile, at
5 142 Material Science and Engineering Technology III the time of irradiation is less than 210 seconds, the size of the nanoparticles tend to be smaller than the optimal size and will increase along with the increase of irradiation time. Table 1. Dimensional data of synthesized AgNPs measured by Particle Size Analyzer (PSA) Irradiation times (s) D x10 (nm) D x50 (nm) D x90 (nm) D [4,3] (nm) Based on data on Fig. 4, Table 1 provides further information about the size of silver nanoparticles based on data from Particle Size Analyzer (PSA). All the data showed a relative narrow size in all parameters of PSA, indicating the existence of AgNPs with well controlled size. Nanoparticles with the smallest size of 25.5 nm (D[4,3]) was obtained on irradiation time 210 seconds, while the largest sized nanoparticles occurs at the irradiation time of 240 seconds at 41.2 nm (D[4,3]). These results are consistent with the data shown in the UV-vis spectra in Fig. 1 that the optimum absorbance value (2.61) is achieved at a maximum wavelength 419 nm. Conclusions In summary, we have shown that it is possible to prepare AgNPs under microwave irradiation with sodium citrate as reductant and silver nitrat salt as precursor. The present synthesis route is an eco-friendly, efficient, simple and fast process for synthesis of silver nanoparticles. The formation of AgNPs was confirmed by the appearance of a surface plasmon absorption between nm. PSA showed that the colloidal nanoparticles had a diameters ranging from nm. TEM images showed that the diameter of the silver nanoparticles in accordance with the results obtained using PSA. The as-prepared colloidal AgNPs were highly stable and did not show any signs of aggregation even after storage for several months at room temperature. Acknowledgement The author acknowledges Laboratory of chemistry department, Universitas Indonesia, and Organic Laboratory of Chemistry Department, Semarang State University, for providing support and facilities to carry research work smoothly in both institutes. Acknowledgements to the Director General of Higher Education for funding through scholarships doctoral program. References [1] Arasu T., V. Prabhu, D and Soniya, M: J. Biosci. Res. (2010), Vol.1(4): [2] Garcia-Barrasa J., J.M. Lopez-de-luzuriaga, and M. Monge: Cent. Eur. J. Chem., 9(1), (2011), p [3] Khan Z, SA Al-Thabaiti, AY Obaid, and. A.O. Al-Youbi: Colloids and Surfaces B: Biointerfaces, 82 (2011), p [4] Shokuhfar A., S.M. Kazemzadeh, M.R. Vaezi, and A. Hassanjani-Roshan: Journal of Nano Research, Vol.11 (2010), p [5] Gasaymeh S.S., S. Radiman, L.Y. Heng, E. Saion, and G.H.M. Saeed: American Journal of Applied Sciences, 7 (7), (2010), p [6] Mishra S., Navinchandra G. Shimpi, and Tanushree Sen: J. Polym. Res. (2013), 20:49.
6 Advanced Materials Research Vol [7] Zamiri R., et al.: Appl. Phys. A., 102 (2011), p [8] Zamiri R, A. Zakaria, HA Ahangar, AR Sadrolhosseini, and MA Mahdi: Int. J. Mol. Sci., 11 (2010), p [9] Van Dong P., Chu Hoang Ha, Le Tran Binh, and Jorn Kasbohm: International Nano Letters. 2 (2012), p.1-9. [10] Shameli K., Mansor bin Ahmad, S.D. Jazayeri, P. Shabanzadeh, P. Sangpour, H. Jahangirian, and Y. Yadollah Gharayebi: Chemistry Central Journal, 6, (2012), p.73. [11] Banerjee P., M. Satapathy, A. Mukhopahayay, and P. Das: Bioresources and Bioprocessing, Vol 1 (2014). [12] Szczepanowicz K., J. Stefanska, R.P. Socha, and P. Warszynski: Physicochem. Probl. Miner. Process, 45 (2010), p [13] Hussain J.I., S. Kumar, A.A. Hashmi, Z. Khan: Adv. Mat. Lett, 2(3) (2011), p [14] N. Gandhi, D. Sirisha, and Vikas Chandra Sharma: Int. Journal of Engineering Research and Applications. (2014), Vol.4, 1(1) pp [15] Siby Joseph and Beena Mathew: Res. J. Recent. Sci. (2014), Vol.3 (ISC-2013), [16] G.A. Valencia, L.C. de O. Vercik, R. Ferrari, and A. Vercik: Starch, 65 (2013), p.1-7. [17]Seema Garg: International Journal of Pharmaceutical Sciences and Research, 4(9) (2013), p [18] Liu F.K., Huang P.W. Chu T.C. and Ko F.H.:. Mater. Lett. 59 (2005), p.940. [19] Sreeram K.J. M. Nidhin, and B.U. Nair: Bull. Mater. Sci. 31(7) (2008), p
International Journal of Pure and Applied Sciences and Technology
Int. J. Pure Appl. Sci. Technol., 9(1) (2012), pp. 1-8 International Journal of Pure and Applied Sciences and Technology ISSN 2229-6107 Available online at www.ijopaasat.in Research Paper Preparation,
More informationoften display a deep green color due to where the SPR occurs (i.e., the wavelength of light that interacts with this specific morphology).
Synthesis-Dependent Catalytic Properties of Gold Nanoparticles Nanoscience is the study of materials that have dimensions, intuitively, on the nanoscale, typically between 1 100 nm. This field has received
More informationKinetically Controlled Seeded Growth Synthesis of Citrate Stabilized Gold. Nanoparticles up to 200 nm: Size Focusing versus.
Kinetically Controlled Seeded Growth Synthesis of Citrate Stabilized Gold Nanoparticles up to 200 nm: Size Focusing versus. Ostwald Ripening Neus G. Bastús, Joan Comenge and Víctor Puntes Additional Results
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 informationMORPHOLOGY AND OPTICAL PROPERTIES OF AGNPS: EFFECT OF REDUCING AGENT TO SURFACTANT RATIO
MORPHOLOGY AND OPTICAL PROPERTIES OF AGNPS: EFFECT OF REDUCING AGENT TO SURFACTANT RATIO Suriati Ghazali and Nureen Noordin Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang,
More informationNovel fluorescent matrix embedded carbon quantum dots enrouting stable gold and silver hydrosols
Novel fluorescent matrix embedded carbon quantum dots enrouting stable gold and silver hydrosols Shouvik Mitra a, Sourov Chandra b, Prasun Patra a, Panchanan Pramanik b *, Arunava Goswami a * a AERU, Biological
More informationThe CdS and CdMnS nanocrystals have been characterized using UV-visible spectroscopy, TEM, FTIR, Particle Size Measurement and Photoluminiscence.
Synthesis of CdS and CdMns Nanocrystals in Organic phase Usha Raghavan HOD, Dept of Information Technology VPM s Polytechnic, Thane Maharashtra Email id: usharagha@gmail.com Abstract: The present work
More informationSupporting Information
Supporting Information Highly Sensitive, Reproducible, and Stable SERS Sensors Based on Well-Controlled Silver Nanoparticles Decorated Silicon Nanowire Building Blocks Xue Mei Han, Hui Wang, Xue Mei Ou,
More informationElectronic supplementary information for:
Electronic supplementary information for: Charge-transfer-induced suppression of galvanic replacement and synthesis of (Au@Ag)@Au double shell nanoparticles for highly uniform, robust and sensitive bioprobes
More informationCHARACTERIZATION OF SILVER NANOPARTICLES PREPARED BY LASER ABLATION IN DISTILLED WATER
CHARACTERIZATION OF SILVER NANOPARTICLES PREPARED BY LASER ABLATION IN DISTILLED WATER Alireza HOJABRI *, Fatemeh HAJAKBARI, Maryam DEBASHI SHOREH Department of Physics, College of Basic Sciences, Karaj
More informationULTRASOUND-ASSISTED IN THE SYNTHESIS OF SILVER NANOPARTICLES USING SODIUM ALGINATE MEDIATED BY GREEN METHOD
Digest Journal of Nanomaterials and Biostructures Vol. 11, No. 2, April - June 2016, p. 547-552 ULTRASOUND-ASSISTED IN THE SYNTHESIS OF SILVER NANOPARTICLES USING SODIUM ALGINATE MEDIATED BY GREEN METHOD
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 informationSynthesis and Characterization of Polymeric Composites Embeded with Silver Nanoparticles
World Journal of Nano Science and Engineering, 2012, 2, 19-24 http://dx.doi.org/10.4236/wjnse.2012.21004 Published Online March 2012 (http://www.scirp.org/journal/wjnse) 19 Synthesis and Characterization
More informationSupplementary Information. Core-Shell Silver/Polymeric Nanoparticles-Based Combinatorial Therapy against Breast Cancer In-vitro
Supplementary Information Core-Shell Silver/Polymeric Nanoparticles-Based Combinatorial Therapy against Breast Cancer In-vitro Nancy M. El-Baz 1,2, Laila Ziko 1,3, Rania Siam 1,3, Wael Mamdouh 1,2 * 1
More information3D Dendritic Gold Nanostructures: Seeded Growth of Multi-Generation Fractal Architecture
-Supporting Information- 3D Dendritic Gold Nanostructures: Seeded Growth of Multi-Generation Fractal Architecture Ming Pan, Shuangxi Xing, Ting Sun, Wenwen Zhou, Melinda Sindoro, Hui Hian Teo, Qingyu Yan,
More informationPreparation of Silver Nanoparticles and Their Characterization
Preparation of Silver Nanoparticles and Their Characterization Abstract The preparation of stable, uniform silver nanoparticles by reduction of silver ions by ethanol is reported in the present paper.
More informationCatalytic Decomposition of Formaldehyde on Nanometer Manganese Dioxide
Modern Applied Science April, 29 Catalytic Decomposition of Formaldehyde on Nanometer Manganese Dioxide Xiujuan Chu & Hua Zhang (Corresponding author) Tianjin Municipal Key Lab of Fibres Modification and
More informationThe effect of silica concentrations on the absorbance of gold nanoparticles
International Journal of ChemTech Research CODEN (USA): IJCRGG, ISSN: 0974-4290, ISSN(Online):2455-9555 Vol.10 No.3, pp 448-455, 2017 The effect of silica concentrations on the absorbance of gold nanoparticles
More informationExperimental Investigation on the Synthesis and Size Control of Copper Nanoparticle via Chemical Reduction Method
Int. J. Nanosci. Nanotechnol., Vol. 6, No. 3, Sep. 21, pp. 144-149 Experimental Investigation on the Synthesis and Size Control of Copper Nanoparticle via Chemical Reduction Method P. Rahimi 1, H. Hashemipour
More informationInteraction of Gold Nanoparticle with Proteins
Chapter 7 Interaction of Gold Nanoparticle with Proteins 7.1. Introduction The interfacing of nanoparticle with biomolecules such as protein is useful for applications ranging from nano-biotechnology (molecular
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 informationFluorescent silver nanoparticles via exploding wire technique
PRAMANA c Indian Academy of Sciences Vol. 65, No. 5 journal of November 2005 physics pp. 815 819 Fluorescent silver nanoparticles via exploding wire technique ALQUDAMI ABDULLAH and S ANNAPOORNI Department
More informationMagnetically-driven selective synthesis of Au clusters on Fe 3 O 4 Nanoparticles
Electronic Supplementary Material (ESI) for Chemical Communications Magnetically-driven selective synthesis of Au clusters on Fe 3 O 4 Nanoparticles Víctor Sebastian, M. Pilar Calatayud, Gerardo F. Goya
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 informationAdsorption of Methylene Blue on Mesoporous SBA 15 in Ethanol water Solution with Different Proportions
2015 2 nd International Conference on Material Engineering and Application (ICMEA 2015) ISBN: 978-1-60595-323-6 Adsorption of Methylene Blue on Mesoporous SBA 15 in Ethanol water Solution with Different
More informationThree Dimensional Nano-assemblies of Noble Metal. Nanoparticles-Infinite Coordination Polymers as a Specific
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2014 Electronic Supplementary Information Three Dimensional Nano-assemblies of Noble Metal Nanoparticles-Infinite
More informationGREEN SYNTHESIS OF STARCH-CAPPED
GREEN SYNTHESIS OF STARCH-CAPPED CdSe QUANTUM DOTS IN AQUEOUS SOLUTION Tanutkun Palakawong Na Aayudhaya 1, *, Panida Viwattana 2, Kheamrutai Thamaphat 2,#, Khemika Lomthaisong 1 1 Program of Forensic Science,
More informationModify morphology of colloidal Ag 2 Se nanostructures by laser irradiation
Supporting information for Modify morphology of colloidal Ag 2 Se nanostructures by laser irradiation Ling-Ling Zhao a, Zhi-Ming Gao a, Hui Liu a, Jing Yang a, Shi-Zhang Qiao a,b, Xi-Wen Du a a School
More informationOne-step green synthesis of chitosan-silver nanoparticles
One-step green synthesis of chitosan-silver nanoparticles Wuttichai Phae-ngam 1, Kheamrutai Thamaphat 2,3*, Fueangfahkan Chutrakulwong 2,3, Chutima Oopathump 4 1 Department of Physics, Faculty of Science
More informationEFFECT OF TEMPERATURE AND NaCl CONCENTRATION ON SYNTHESIS OF SILVER NANOPARTICLES PREPARED IN AQUEOUS MEDIUM
EFFECT OF TEMPERATURE AND NaCl CONCENTRATION ON SYNTHESIS OF SILVER NANOPARTICLES PREPARED IN AQUEOUS MEDIUM Nurul Akma Reduan, Suriati Ghazali and Saidatul Shima Jamari Faculty of Chemical and Natural
More informationEfficient charge storage in photoexcited TiO 2 nanorod-noble metal nanoparticle composite systems
Electronic Supplementary Information Efficient charge storage in photoexcited TiO 2 nanorod-noble metal nanoparticle composite systems P. D. Cozzoli, M. L. Curri, and A. Agostiano 1. Synthesis of TiO 2
More informationProbing the Kinetics of Ligand Exchange on Colloidal Gold. Nanoparticles by Surface-Enhanced Raman Scattering
-Supporting Information- Probing the Kinetics of Ligand Exchange on Colloidal Gold Nanoparticles by Surface-Enhanced Raman Scattering Yuhua Feng, Shuangxi Xing, Jun Xu, Hong Wang, Jun Wei Lim, and Hongyu
More informationOne-step seeded growth of Au nanoparticles with widely tunable sizes
Electronic Supplementary Information (ESI) One-step seeded growth of Au nanoparticles with widely tunable sizes Chuanbo Gao, John Vuong, Qiao Zhang, Yiding Liu and Yadong Yin* Department of Chemistry,
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 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 informationGreen Synthesis of Silver Nanoparticle from Photograph Wastewater Using Hylocereus Undatus Skin Extract
ORIENTAL JOURNAL OF CHEMISTRY An International Open Free Access, Peer Reviewed Research Journal www.orientjchem.org ISSN: 0970-020 X CODEN: OJCHEG 2017, Vol. 33, No. (3): Pg. 1235-1240 Green Synthesis
More informationSacrifical Template-Free Strategy
Supporting Information Core/Shell to Yolk/Shell Nanostructures by a Novel Sacrifical Template-Free Strategy Jie Han, Rong Chen and Rong Guo* School of Chemistry and Chemical Engineering, Yangzhou University,
More informationElectronic Supporting Information (ESI): Silver nitrate (99.9%), hydrogen peroxide (30-32 wt. % solution in water (ca M),
Experimental section: Electronic Supporting Information (ESI): Reagents Silver nitrate (99.9%), hydrogen peroxide (30-32 wt. % solution in water (ca.. 10.4 M), semiconductor grade, 99.99), L-arginine (TLC,
More informationPREPARATION OF LUMINESCENT SILICON NANOPARTICLES BY PHOTOTHERMAL AEROSOL SYNTHESIS FOLLOWED BY ACID ETCHING
Phase Transitions Vol. 77, Nos. 1 2, January February 2004, pp. 131 137 PREPARATION OF LUMINESCENT SILICON NANOPARTICLES BY PHOTOTHERMAL AEROSOL SYNTHESIS FOLLOWED BY ACID ETCHING X. LI, Y. HE, S.S. TALUKDAR
More informationBiosynthesis and kinetic studies of silver nanoparticles from Semecarpus ancardium Linn. F and their application
International Journal of Interdisciplinary and Multidisciplinary Studies (IJIMS), 2016, Vol 3, No.4,53-57. 53 Available online at http://www.ijims.com ISSN: 2348 0343 Biosynthesis and kinetic studies of
More informationSupporting Information s for
Supporting Information s for # Self-assembling of DNA-templated Au Nanoparticles into Nanowires and their enhanced SERS and Catalytic Applications Subrata Kundu* and M. Jayachandran Electrochemical Materials
More informationSUPPORTING INFORMATION
Electronic Supplementary Material (ESI) for Chemical Communications. This journal is The Royal Society of Chemistry 2017 SUPPORTING INFORMATION Synthesis of Circular and Triangular Gold Nanorings with
More informationSunlight- mediated synthesis of silver and gold. against wound infection causing bacteria
International Journal of Scientific and Research Publications, Volume 6, Issue 12, December 2016 142 Sunlight- mediated synthesis of silver and gold nanoparticles using Active Manuka Honey 20+ UMF R against
More informationGreen bio-synthesis of Silver Nanoparticles Using Ziziphora tenuior L Water Extract
Journal of Applied Chemical Research, 10, 1, 103-109 (2016) Journal of Applied Chemical Research www.jacr.kiau.ac.ir Green bio-synthesis of Silver Nanoparticles Using Ziziphora tenuior L Water Extract
More informationSynthesis of Colloidal Au-Cu 2 S Heterodimers via Chemically Triggered Phase Segregation of AuCu Nanoparticles
SUPPORTING INFORMATION Synthesis of Colloidal Au-Cu 2 S Heterodimers via Chemically Triggered Phase Segregation of AuCu Nanoparticles Nathan E. Motl, James F. Bondi, and Raymond E. Schaak* Department of
More informationQuantum Dots for Advanced Research and Devices
Quantum Dots for Advanced Research and Devices spectral region from 450 to 630 nm Zero-D Perovskite Emit light at 520 nm ABOUT QUANTUM SOLUTIONS QUANTUM SOLUTIONS company is an expert in the synthesis
More informationRoom Temperature Hydrogen Generation from Hydrous Hydrazine for Chemical Hydrogen Storage
(Supporting Information) Room Temperature Hydrogen Generation from Hydrous Hydrazine for Chemical Hydrogen Storage Sanjay Kumar Singh, Xin-Bo Zhang, and Qiang Xu* National Institute of Advanced Industrial
More informationFast ph-assisted functionalization of silver nanoparticles with monothiolated DNA
Supporting Information for Fast ph-assisted functionalization of silver nanoparticles with monothiolated DNA Xu Zhang ab, Mark R. Servos b, and Juewen Liu* a a Department of Chemistry and Waterloo Institute
More informationSupplementary Information
Supplementary Information Metal tips on pyramid-shaped PbSe/CdSe/CdS heterostructure nanocrystal photocatalysts: study of ripening and core/shell formation Whi Dong Kim, a Sooho Lee, a Chaewon Pak, a Ju
More informationSupporting Information
Supporting Information Precisely Controllable Core-Shell Ag@Carbon Dots Nanoparticles: Application to in Situ Super-Sensitive Monitoring of Catalytic Reactions Jing Jin, Shoujun Zhu, Yubin Song, Hongyue
More informationAvailable online Research Article. Hamideh Saravani* and Mehdi Sanjarani V.
Available online www.jocpr.com Journal of Chemical and Pharmaceutical Research, 2016, 8(4):1408-1413 Research Article ISSN : 0975-7384 CODEN(USA) : JCPRC5 Synthesis and characterization of Cu 2 BaO 4 nanoparticles
More informationAPPLICATION OF SILVER NANOPARTICLES AS METAL MORDANT AND ANTIBACTERIAL AGENT IN WOOL NATURAL DYEING PROCESS Hossein Barani 1, Majid Nasiri Boroumand 2
APPLICATION OF SILVER NANOPARTICLES AS METAL MORDANT AND ANTIBACTERIAL AGENT IN WOOL NATURAL DYEING PROCESS Hossein Barani 1, Majid Nasiri Boroumand 2 1 Department of Carpet, Faculty of Art, University
More informationA Systematic Study of the Synthesis of Silver Nanoplates: Is Citrate a. "Magic" Reagent?
SUPPORTING INFORMATION A Systematic Study of the Synthesis of Silver Nanoplates: Is Citrate a "Magic" Reagent? Qiao Zhang, Na Li,, James Goebl, Zhenda Lu, Yadong Yin*, Department of Chemistry, University
More informationSupporting Information
Supporting Information Wiley-VCH 2011 69451 Weinheim, Germany Silver Nanocrystals with Concave Surfaces and Their Optical and Surface-Enhanced Raman Scattering Properties** Xiaohu Xia, Jie Zeng, Brenden
More informationRoom-temperature method for coating ZnS shell on semiconductor quantum dots
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry C. This journal is The Royal Society of Chemistry 2014 Electronic supplementary information Room-temperature method for coating
More informationFabrication and characterization of poly (ethylene oxide) templated nickel oxide nanofibers for dye degradation
Electronic Supplementary Material (ESI) for Environmental Science: Nano. This journal is The Royal Society of Chemistry 2014 Supplementary Information Fabrication and characterization of poly (ethylene
More informationSize-controlled Synthesis of sub-10 nm Citrate-stabilized Gold. Nanoparticles and Related Optical Properties.
Supporting information for: Size-controlled Synthesis of sub-10 nm Citrate-stabilized Gold Nanoparticles and Related Optical Properties. Jordi Piella, Neus G. Bastús and Victor Puntes Table of Contents
More informationCollege of Mechanical Engineering, Yangzhou University, Yangzhou , China; 2
Proceedings Light-Assisted Room-Temperature NO2 Sensors Based on Black Sheet-Like NiO Xin Geng 1,2,3, Driss Lahem 4, Chao Zhang 1, *, Marie-Georges Olivier 3 and Marc Debliquy 3 1 College of Mechanical
More informationChapter 5: Radiation induced synthesis of anisotropic gold nanoparticles and their characterization
Chapter 5: Radiation induced synthesis of anisotropic gold nanoparticles and their characterization 5.1. Introduction Fine metal particles with nanometer scale dimensions are of current interest due to
More informationHighly Sensitive and Selective Colorimetric Visualization of Streptomycin in Raw Milk Using Au Nanoparticles Supramolecular Assembly
SUPPORTING INFORMATION Highly Sensitive and Selective Colorimetric Visualization of Streptomycin in Raw Milk Using Au Nanoparticles Supramolecular Assembly Jiayu Sun, Jiechao Ge, Weimin Liu, Zhiyuan Fan,
More informationSupplementary Information
Supplementary Information Direct Synthesis of a Macroscopic Array of Naked Ag Nanoparticles Omar Ayyad,* a,b,c David Muñoz-Rojas, a Pedro Gómez-Romero* a,c Experimental details Polyvinylpyrrolidone (PVP40T-500G,
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 informationGrowth of silver nanocrystals on graphene by simultaneous reduction of graphene oxide and silver ions with a rapid and efficient one-step approach
Growth of silver nanocrystals on graphene by simultaneous reduction of graphene oxide and silver ions with a rapid and efficient one-step approach Xiu-Zhi Tang, a Zongwei Cao, b Hao-Bin Zhang, a Jing Liu
More informationUV-vis Analysis of the Effect of Sodium Citrate on the Size and the Surface Plasmon Resonance of Au NPs. Eman Mousa Alhajji
UV-vis Analysis of the Effect of Sodium Citrate on the Size and the Surface Plasmon Resonance of Au NPs Eman Mousa Alhajji North Carolina State University Department of Materials Science and Engineering
More informationSYNTHESIS AND PROCESSING OF METALLIC NANOMATERIALS USING CO 2 EXPANDED LIQUIDS AS A GREEN SOLVENT MEDIUM
SYNTHESIS AND PROCESSING OF METALLIC NANOMATERIALS USING CO 2 EXPANDED LIQUIDS AS A GREEN SOLVENT MEDIUM Christopher Kitchens Dept. of Chemical and Biomolecular Engineering Clemson University, SC ENGINEERED
More informationEffect of Metal Concentration on Shape and Composition Changes in Gold-Silver Bimetallic Systems Md. Jahangir Alam
Noto-are 15542466: Chemical technology. 2013-07-15. Effect of Metal Concentration on Shape and Composition Changes in Gold-Silver Bimetallic Systems Md. Jahangir Alam Department of Agronomy and Agricultural
More informationPreparation of Gold Nanoparticles by Pulsed Laser Ablation in NaOH solution
Preparation of Gold Nanoparticles by Pulsed Laser Ablation in NaOH solution Raheem Gaayied Kadhim Maryam falah noori Babylon university /colloge of the scince Abdulrahman Khalaf Ali School of Applied Sciences
More informationChemical Transformations in Ultrathin Chalcogenide Nanowires
Chemical Transformations in Ultrathin Chalcogenide Nanowires Geon Dae Moon, Sungwook Ko, Younan Xia, and Unyong Jeong Department Biomedical Engineering Washington University, St. Louis, Missouri 63130
More informationSupplementary Information
Electronic Supplementary Material (ESI) for RSC Advances. This journal is The Royal Society of Chemistry 2016 Supplementary Information Multifunctional Fe 2 O 3 /CeO 2 Nanocomposites for Free Radical Scavenging
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 informationPreparation of One-dimensional ZnO/Bi2O3 Heterostructures Nanomaterial for Visible Light Photocatalysis
2016 International Conference on Material Science and Civil Engineering (MSCE 2016) ISBN: 978-1-60595-378-6 Preparation of One-dimensional ZnO/Bi2O3 Heterostructures Nanomaterial for Visible Light Photocatalysis
More informationAvailable online at ScienceDirect. Procedia Engineering 148 (2016 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 148 (2016 ) 992 999 4th International Conference on Process Engineering and Advanced Materials Process Optimization of Silver
More informationA LOW COST MICROWAVE SYNTHESIS METHOD FOR PREPARATION OF GOLD NANOPARTICLES
Communications in Physics, Vol. 24, No. 2 (2014), pp. 146-154 A LOW COST MICROWAVE SYNTHESIS METHOD FOR PREPARATION OF GOLD NANOPARTICLES NGO VO KE THANH Faculty of Physics, University of Science, Vietnam
More informationSupporting Information
Supporting Information Anisotropic and Multi-Component Nanostructures by Controlled Symmetry Breaking of Metal Halide Intermediates Alexander E. Kossak,,^ Benjamin O. Stephens,,^ Yuan Tian,, Pan Liu, Mingwei
More informationSynthesis of ternary chalcogenide colloidal nanocrystals in aqueous medium
Journal of Physics: Conference Series PAPER OPEN ACCESS Synthesis of ternary chalcogenide colloidal nanocrystals in aqueous medium To cite this article: D S Mazing et al 28 J. Phys.: Conf. Ser. 38 25 View
More informationDouble Mesoporous Silica Shelled Spherical/Ellipsoidal Nanostructures: Synthesis and Hydrophilic/Hydrophobic Anticancer Drug Delivery
Supporting information for Supplementary Material (ESI) for Journal of Materials Chemistry Double Mesoporous Silica Shelled Spherical/Ellipsoidal Nanostructures: Synthesis and Hydrophilic/Hydrophobic Anticancer
More informationSynthesis and Characterization of Iron-Oxide (Hematite) Nanocrystals. Z.H. Lee
ABSTRACT Synthesis and Characterization of Iron-Oxide (Hematite) Nanocrystals Z.H. Lee Engineering Science Programme, National University of Singapore Kent Ridge, Singapore 119260 Monodispersed iron oxide
More informationSupporting Information. Self-assembled nanofibers from Leucine Derived Amphiphiles as Nanoreactors for Growth of ZnO Nanoparticles
Supporting Information Self-assembled nanofibers from Leucine Derived Amphiphiles as Nanoreactors for Growth of ZnO Nanoparticles Karen T. Johnson, Theodore E. Gribb, Evan M. Smoak, and Ipsita A. Banerjee*
More informationSupporting Information
Copyright WILEY-VCH Verlag GmbH & Co. KGaA, 69469 Weinheim, Germany, 2018. Supporting Information for Small, DOI: 10.1002/smll.201801523 Ultrasensitive Surface-Enhanced Raman Spectroscopy Detection Based
More informationStudying the Chemical, Optical and Catalytic Properties of Noble Metal (Pt, Pd, Ag, Au)/Cu 2 O Core-Shell Nanostructures Grown via General Approach
Studying the Chemical, Optical and Catalytic Properties of Noble Metal (Pt, Pd, Ag, Au)/Cu 2 O Core-Shell Nanostructures Grown via General Approach Noga Meir, Ilan Jen-La Plante, Kobi Flomin, Elina Chockler,
More informationSynthesis of Nanoparticles using Atmospheric Microplasma Discharge
Synthesis of Nanoparticles using Atmospheric Microplasma Discharge Ankit Bisht, G. Roshan Deen, Usman Ilyas, Y. Wang, Alireza Talebitaher, P. Lee, R.S. Rawat NSSE, National Institute of Education, Nanyang
More informationLocalized and Propagating Surface Plasmon Co-Enhanced Raman Spectroscopy Based on Evanescent Field Excitation
Supplementary Information Localized and Propagating Surface Plasmon Co-Enhanced Raman Spectroscopy Based on Evanescent Field Excitation Yu Liu, Shuping Xu, Haibo Li, Xiaoguang Jian, Weiqing Xu* State Key
More informationSupporting Information for: Emulsion-assisted synthesis of monodisperse binary metal nanoparticles
Supporting Information for: Emulsion-assisted synthesis of monodisperse binary metal nanoparticles Zhen Yin, Ding Ma* and Xinhe Bao* Synthesis of the PdCu nanoparticles: All synthesis was carried out under
More informationCHAPTER 3. OPTICAL STUDIES ON SnS NANOPARTICLES
42 CHAPTER 3 OPTICAL STUDIES ON SnS NANOPARTICLES 3.1 INTRODUCTION In recent years, considerable interest has been shown on semiconducting nanostructures owing to their enhanced optical and electrical
More informationSupporting Information for. Chad A. Mirkin* Department of Chemistry and Institute for Nanotechnology, Northwestern University,
S1 Supporting Information for Observation of a Quadrupole Plasmon Mode for a Colloidal Solution of Gold Nanoprisms Jill E. Millstone, Sungho Park, Kevin L. Shuford, Lidong Qin, George C. Schatz, and Chad
More informationElectronic Supplementary Information. Low-temperature Benchtop-synthesis of All-inorganic Perovskite Nanowires
Electronic Supplementary Material (ESI) for Nanoscale. This journal is The Royal Society of Chemistry 2017 Electronic Supplementary Information Low-temperature Benchtop-synthesis of All-inorganic Perovskite
More informationSynthesis and characterization of nanophased silver tungstate
PRAMANA c Indian Academy of Sciences Vol. 65, No. 5 journal of November 2005 physics pp. 793 799 Synthesis and characterization of nanophased silver tungstate THRESIAMMA GEORGE 1, SUNNY JOSEPH 1 and SURESH
More informationSYNTHESIS OF ZnO:Mn NANOPARTICLES, NANOBELTS AND NANORODS
Journal of Ovonic Research Vol. 4, No. 5, October 2008, p. 101-105 SYNTHESIS OF ZnO:Mn NANOPARTICLES, NANOBELTS AND NANORODS Dhiraj Kumar, Sunil Kumar a, H. S Bhatti *, Atul Gupta b, J. K. Sharma a Department
More informationDefense Technical Information Center Compilation Part Notice
UNCLASSIFIED Defense Technical Information Center Compilation Part Notice ADP012179 TITLE: Salt-Induced Block Copolymer Micelles as Nanoreactors for the Formation of CdS Nanoparticles DISTRIBUTION: Approved
More informationPermeable Silica Shell through Surface-Protected Etching
Permeable Silica Shell through Surface-Protected Etching Qiao Zhang, Tierui Zhang, Jianping Ge, Yadong Yin* University of California, Department of Chemistry, Riverside, California 92521 Experimental Chemicals:
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 informationSelf-assembly of PEGylated Gold Nanoparticles. with Satellite Structures as Seeds
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 216 Electronic Supplementary Information for Self-assembly of PEGylated Gold Nanoparticles with Satellite
More informationElectronic supplementary information
Electronic supplementary information Surface plasmon resonance enhanced upconversion luminescence in aqueous media for TNT selective detection Nina Tu and Leyu Wang* State Key Laboratory of Chemical Resource
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 informationSupporting Information
Supporting Information Ag.1 Pd.9 /rgo: An Efficient Catalyst for Hydrogen Generation from Formic Acid/Sodium Formate Yun Ping, Jun-Min Yan*, Zhi-Li Wang, Hong-Li Wang, Qing Jiang Key Laboratory of Automobile
More informationHybrid Gold Superstructures: Synthesis and. Specific Cell Surface Protein Imaging Applications
Supporting Information Hybrid Gold Nanocube@Silica@Graphene-Quantum-Dot Superstructures: Synthesis and Specific Cell Surface Protein Imaging Applications Liu Deng, Ling Liu, Chengzhou Zhu, Dan Li and Shaojun
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 informationGreen Synthesis of Silver Nanoparticles and Their Antimicrobial Activity against Gram Positive and Gram Negative Bacteria
International Journal of Biotechnology and Bioengineering Research. ISSN 2231-1238, Volume 4, Number 4 (2013), pp. 341-346 Research India Publications http://www.ripublication.com/ ijbbr.htm Green Synthesis
More informationSupplementary Information
Supplementary Information Time-dependent growth of zinc hydroxide nanostrands and their crystal structure Xinsheng Peng, ab Jian Jin, a Noriko Kobayashi, a Wolfgang Schmitt, c and Izumi Ichinose* a a Organic
More information2016 International Conference on Advanced Manufacture Technology and Industrial Application (AMTIA 2016) ISBN:
2016 International Conference on Advanced Manufacture Technology and Industrial Application (AMTIA 2016) ISBN: 978-1-60595-387-8 Preparation and Characterization of Ultra-Fine Silver Powder by Hydrogen
More information