Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 37, Issue 4, Pages 3048-3055Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2011.11.012
Keywords
TiO2-xSx nanotubes; Sulfur doping; ZnS-In2S3-Ag2S; Solid solution; H-2 production
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Funding
- National High Technology Research and Development Program of China [2007AA03Z337]
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ZnS-In2S3-Ag2S solid solution coupled with TiO2-xSx nanotubes film catalyst has been successfully prepared by a two-step process of anodization and solvothermal methods for the first time. The as-prepared photo-catalysts are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), UV-Visible diffuse reflectance spectra (UV-Vis DRS), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS), respectively. The results show that the ZnS-In2S3-Ag2S solid solution are deposited on the surface of TiO2NTs nanotubes under the solvothermal conditions, by which S atoms are incorporated into the lattice of TiO2 through substituting the sites of oxygen atoms. Such ZnS-In2S3-Ag2S@TiO2-xSx nanotubes composite presents the enhanced absorption in visible region and the efficient transfer of photoelectron between the solid solution and TiO2-xSx nanotubes, which determines the excellent photocatalytic activity for the photocatalytic hydrogen evolution from aqueous solutions containing the sacrificial reagents of Na2S and Na2SO3 under 500 W Xe lamp irradiation. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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