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Journal of Nanomaterials
Volume 2013 (2013), Article ID 852139, 8 pages
http://dx.doi.org/10.1155/2013/852139
Research Article

Preparation, Characterization, and Enhanced Photocatalytic Hydrogen Evolution Activity of -Based Compounds under Simulated Sunlight Irradiation

1School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan 414000, China
2College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
3Hunan Province Key Laboratory of Catalysis and Separation of Speciality Petrochemicals, Hunan Institute of Science and Technology, Yueyang 414006, China

Received 28 November 2012; Accepted 18 January 2013

Academic Editor: Feng Yan

Copyright © 2013 Li Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

photocatalyst was successfully prepared via solid state reaction and further combined with TiO2 by a sol-gel method and a solid phase method, respectively. For comparison, Pt particles were loaded to prepare Pt- via a hydrogen reduction method. All the samples were characterized by thermogravimetry and differential thermal analysis (TG/DTA), X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (UV-vis DRS), and scanning electron microscopy (SEM) techniques. Photocatalytic H2 evolution activities of the as-obtained samples were evaluated from aqueous oxalic acid solution under simulated sunlight irradiation. The effects of photocatalyst concentration, TiO2 content, and composite method on the H2 evolution activities of the as-obtained photocatalysts were investigated. The results show that, when the concentration of photocatalyst is 0.8  , the TiO2- composite photocatalyst prepared by a sol-gel method exhibits the optimized photocatalytic activity, and the H2 production rate is 4.35 mmol  with 30 wt.% content of TiO2.