文献类型：期刊文献

英文题名：Preparation of Cu-loaded SrTiO₃ nanoparticles and their photocatalytic activity for hydrogen evolution from methanol aqueous solution

作者：Bui, Duc-Nguyen[1,2];Mu, Jin[1];Wang, Lei[2];Kang, Shi-Zhao[1];Li, Xiangqing[1]

机构：[1]Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China;[2]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：274

起止页码：328

外文期刊名：APPLIED SURFACE SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000318598600051)】；

基金：This work was financially supported by the Key Project of the National Natural Science Foundation of China (No. 20933007) and the National High Technology Research and Development Program of China (No. 2009AA05Z101).

语种：英文

外文关键词：Cu co-catalyst; SrTiO3 nanoparticles; Photocatalysis; Hydrogen

摘要：Cu-loaded SrTiO3 nanoparticles (Cu-SrTiO3) were prepared using a simple in situ photo-deposition method and their photocatalytic activity for hydrogen evolution from methanol aqueous solution was evaluated. The results characterized with XRD, TEM, XPS and EDX indicated that the as-synthesized sample was composed of metallic Cu and cubic SrTiO3, and the metallic Cu was homogeneously loaded on the surface of SrTiO3 nanoparticles. Under UV light irradiation, Cu-SrTiO3 displayed much higher photocatalytic activity for hydrogen evolution and excellent stability in comparison with pure SrTiO3 nanoparticles. The results further confirmed that the efficient separation of photogenerated electron/hole pairs was critical for the enhanced photocatalytic activity of Cu-SrTiO3. Moreover, the rate of hydrogen evolution of 0.5 wt.% Cu-SrTiO3 is comparable with that of 0.5 wt.% Pt-SrTiO3 photocatalyst under optimum conditions, implying that the metallic Cu is an efficient alternative to Pt as a co-catalyst on SrTiO3. The high photocatalytic activity, low cost and chemical stability mean that the Cu-loaded SrTiO3 is a potential catalyst for the photocatalytic hydrogen evolution from methanol aqueous solution. (C) 2013 Elsevier B.V. All rights reserved.