文献类型：期刊文献

英文题名：The size and valence state effect of Pt on photocatalytic H2 evolution over platinized TiO2 photocatalyst

作者：Xing, Jun[1];Li, Yu Hang[1];Jiang, Hai Bo[1];Wang, Yun[2];Yang, Hua Gui[1,2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Griffith Univ, Ctr Clean Environm & Energy, Nathan, Qld 4222, Australia

年份：2014

卷号：39

期号：3

起止页码：1237

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;EI(收录号：20135217143519);WOS:【SCI-EXPANDED(收录号:WOS:000331422200005)】；

基金：This work was financially supported by National Natural Science Foundation of China (91022023, 21076076), SRF for ROCS and SEM, Programme for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, Major Basic Research Programme of Science and Technology Commission of Shanghai Municipality (10JC1403200) and Shanghai Municipal Natural Science Foundation (12ZR1407500).

语种：英文

外文关键词：Pt/TiO2; Co-catalyst; Photocatalysis; Size effect; Valence state

摘要：Photocatalytic hydrogen production from water or organic compounds is a promising way to resolve our energy crisis and environmental problems in the near future. Over the past decades, many photocatalysts have been developed for solar water splitting. However, most of these photocatalysts require cocatalyst to facilitate H-2 evolution reaction and noble metals as key cocatalysts are widely used. Consequently, the condition of noble metal cocatalyst including the size and valence state etc plays the key role in such photocatalytic system. Here, the size and valence state effect of Pt on photocatalytic H-2 evolution over platinized TiO2 photocatalyst were studied for the first time. Surprisingly, it was found that Pt particle size does not affect the photoreaction rate with the size range of several nanometers in this work, while it is mainly depended on the valence state of Pt particles. Typically, TOFs of TiO2 photodeposited with 0.1-0.2 wt% Pt can exceed 3000 h(-1). Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.