NaTa0 3. /MCM-48 composites for photocatalytic conversion of organic molecules. Journal of Physics: Conference Series.

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1 Journal of Physics: Conference Series PAPER OPEN ACCESS NaTa0 3 /MCM-48 composites for photocatalytic conversion of organic molecules To cite this article: K Senevirathne et al 2016 J. Phys.: Conf. Ser View the article online for updates and enhancements. Related content - Importance of characterising the cocatalyst structure in the development of photocatalysts for the splitting of water N S Hondow, R Brydson, Y H Chou et al. - Hydrophobic hydrophilic conversion in microfluidic polymer channels with TiO_2 thin films Hyun Jik Park, In Tae Kim, Sang Hui Park et al. - Facile preparation of a TiO2 quantum dot/graphitic carbon nitride heterojunction with highly efficient photocatalytic activity Xing Wang, Subin Jiang, Xuejian Huo et al. This content was downloaded from IP address on 06/06/2018 at 18:09

2 p pp p p Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd 1

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4 ppp p p p 2.1. Materials p 2.2 Materials Synthesis MCM /MCM-48 composite synthesis Pt deposition 3

5 2.3 Physical Characterization Powder X-ray diffraction (PXRD) Scanning Electron Microscopy (SEM) Thermogravimetric analysis (TGA) Surface area and porosity analysis Elemental analysis. 2.4 Photocatalytic experiments p p pp 3.1. Structural analysis 4

6 Intensity/ counts (a) MCM 550 C MCM calcined at 850 C MCM-NaTaO3(90-10) clcined@ 500 C MCM-NaTO3 (90-10)clcined@850 C MCM-NaTO3 Intensity / counts 2 theta/degrees 2 theta / degrees (b) MCM C (w/o citric acid) MCM C (with citric acid) /MCM-48 (50-50) (with citric acid) /MCM-48 (40-60) (with citric acid) 5

7 (c) % weight loss Temperature / ºC (b) (a) 0.9 Eqn 1 FWHM x Cos 6

8 100 (f) (110) (112) (202) (220) (222) (132) (224) Intensity / counts (e) (d) (c) (b) 20 (a) PDF # / degrees 3.2. BET Surface area and pore size distribution analysis 7

9 (f) Relative pressure (P/P 0 ) Vol ads / cc.g -1 (e) (d) (b) (c) (a) 8

10 3rd Euro-Mediterranean Conference on Materials and Renewable Energies (EMCMRE-3) IOP Publishing dv(logr) MCM-Silica /MCM-48 (90-10) /MCM-48 (80-20) /MCM-48 (70-30) /MCM-48 (60-40) /MCM-48 (50-50) Pore diameter / Angstom dv (log r) MCM-Silica /MCM-48 (90-10) /MCM-48 (80-20) /MCM-48 (70-30) /MCM-48 (60-40) /MCM-48 (50-50) Pore diameter / Angstom 3.3. Morphological characterization 9

11 (a) (b) (c) (d) 3.4. Photocatalytic activity pppp p p p p p p p 10

12 Absorbance Absorbance (a) (c) Wavelength / nm 0 H 1 H 2 Hrs 3 Hrs 4 Hrs 5 Hrs 0 H 1 H 2 H 3 H 4 H 5 H 6 H Absorbance Absorbance (b) (d) Wavelength / nm 0 H 30 min 90 min 120 min 150 min 180 min 0 H 1 H 2 Hrs 3 Hrs 4 Hrs 5 Hrs 6 Hrs Wavelength / nm p p p p p pp p 0.0 Wavelength / nm 11

13 3rd Euro-Mediterranean Conference on Materials and Renewable Energies (EMCMRE-3) IOP Publishing (a) C/C p-na only Time / hours Time / hours C/C 0 (b) 1st attempt 2nd attempt 3rd attempt 12

14 p p p Chem. Soc. Rev Phys. Lett Solid State Chem Phys. Chem. Chem. Phys Chem. Mater Nat. Mater J. Phys. Chem. C J. Electroanal. Chem Ultrason. Sonochem Catal. Commun J. Sol-Gel Sci. Technol. 13

15 Appl. Phys. Lett J. Phys. Chem B J. Am. Chem. Soc J. Ind. Eng. Chem Langmuir J. Phys. Chem. C Eur. J. Inorg. Chem RSC Adv J. Serb. Chem. Soc J. Phys. Chem. C Appl. Catal. A: General Nano Energy Adv. Funct. Mater Langmuir 14