期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 39, 期 33, 页码 18758-18769出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2014.08.145
关键词
Photocatalytic hydrogen production; Heterojuction; Visible light; Cd1-xZnxS
资金
- SB RAS [35]
- Ministry of Education and Science of the Russian Federation and Russia President Grant [SP85.2012.1, NSh1183.2014.3]
- Skolkovo Foundation (Grant Agreement for Russian educational organization) [1]
- Russian Foundation for Basic Research [14-02-31631 mol_a]
Multiphase photocatalysts Pt/Cd1-xZnxS/ZnO/Zn(OH)(2), Pt/Cd1-xZnxS/ZnO, and Pt/ Cd1-xZnxS/Zn(OH)(2) were synthesized by a new two-step technique. The photocatalysts were characterized by a wide range of experimental techniques: X-ray diffraction, high-resolution transmission electron microscopy combined with energy-dispersive X-ray spectroscopy, low-temperature N-2 adsorption/desorption, and UV/VIS spectroscopy. The photocatalytic activity was tested in a batch reactor in the reaction of H-2 evolution from aqueous solutions of ethanol under visible light irradiation (lambda > 420 nm). The highest achieved photocatalytic activity was 2256 mu mol H-2 per gram of photocatalyst per hour; the highest quantum efficiency was 10.4%. The activity of Pt/Cd1-xZnxS/Zn(OH)(2) was higher than that of Pt/Cd1-xZnxS/ZnO/Zn(OH)(2) and Pt/Cd1-xZnxS/ZnO. The explanation of enhanced activity of zinc cadmium sulfide/e-zinc hydroxide based on quantum calculations was suggested. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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