文献类型：期刊文献

英文题名：Subnano-Sized Pt-Au Alloyed Clusters as Enhanced Cocatalyst for Photocatalytic Hydrogen Evolution

作者：Cheng, Ling[1];Li, Yuhang[1];Chen, Aiping[1];Zhu, Yihua[1];Li, Chunzhong[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, Shanghai Engn Res Ctr Hierarch Nanomat, Shanghai 200237, Peoples R China

年份：2019

卷号：14

期号：12

起止页码：2112

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20192407033624);WOS:【SCI-EXPANDED(收录号:WOS:000471717800012)】；

基金：This work was supported by the National Natural Science Foundation of China (21808061, 21838003, 91834301), the Shanghai Scientific and Technological Innovation Project (18JC1410500, 18DZ2252400), "the Fundamental Research Funds for the Central Universities" (222201714001, 222201718002), Shanghai Sailing Program (17YF1402900), "Chen Guang" project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (16CG31). We would like to thank Prof. H. G. Yang for supporting the photocatalytic tests. The authors declare no conflict of interests.

语种：英文

外文关键词：confined reaction; mesoscale structures; Pt-Au alloy; solar energy conversion; water splitting

摘要：Photocatalytic water splitting for H-2 evolution is regarded as the most promising way to overcome the energy and environmental crisis. Pt clusters as a cocatalyst can efficiently enhance the performance of H-2 generation in most photocatalysts, but the activity is still unsatisfied. By tuning the electronic structures of materials, one can develop catalysts with enhanced activity. Here we synthesize a Pt-Au alloy with subnano size as cocatalyst on TiO2 nanosheets for photocatalytic H-2 generation that shows an outstanding activity with a H-2 generation rate of 80.1 mu mol h(-1) for at least 100 h. The activity is twice than the pure Pt cocatalyst, mainly because the optimized hydrogen adsorption energy on Pt cluster is tuned by Au atoms.