Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 36, Issue 10, Pages 5811-5816Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2011.01.117
Keywords
Ag-SrTiO3 nanotube arrays; Photocatalysis; Hydrogen production
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Funding
- National Natural Science Foundation of China [50902040, 50802021]
- Research Foundation for Personnel in Science and Technology Innovation of Harbin [2009RFQXG046]
- Science Foundation of Educational Commission of Heilongjiang Province [11541096]
- Heilongjiang Province Science Foundation for Young Scholar [QC2010065]
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The highly ordered Ag-SrTiO3 nanotube arrays (NTAs) with uniform size were successfully synthesized by a combination of anodic oxidation, hydrothermal process and photocatalytic reduction method. X-ray photoelectron spectroscopy analysis reveals that Ag exists in the form of metallic silver, which is in good agreement with the X-ray diffraction characterization. Moreover, the UV-vis diffuse reflectance spectra indicate that Ag-SrTiO3 NTAs have a strong absorption in the visible region which is attributed to the plasmon resonance of silver nanoparticles. After Ag loading, a further improvement of the photocatalytic activity for hydrogen production was obtained. Based on the above results, a possible electron-hole transfer mechanism was also assumed. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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