文献类型：期刊文献

英文题名：Quantitative analysis of the PtO structure during photocatalytic water splitting by operando XAFS

作者：Li, Yu Hang[1];Li, Chunzhong[1];Yang, Hua Gui[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：5

期号：39

起止页码：20631

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20174204276976);WOS:【SCI-EXPANDED(收录号:WOS:000412800300012)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21573068), Program of Shanghai Subject Chief Scientist (15XD1501300), Fundamental Research Funds for the Central University (222201718002 and 222201714001), National Postdoctoral Program for Innovative Talents (BX201600050), Shanghai Sailing Program (17YF1402900), "Chen Guang" project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (16CG31), and China Postdoctoral Science Foundation Funded Project (2016M601523). We would like to thank L. R. Zheng and Z. Jiang for valuable discussions of the XAFS measurements at 1W1B at the BSRF and 14W1B at the SSRF. The manuscript was written through contributions of all authors. All authors have given approval to the final version of the manuscript.

语种：英文

外文关键词：Water absorption - Bond length - X ray absorption

摘要：Here, for the first time, we detect reversible structural changes of platinum oxide as an active site in photocatalytic water splitting by operando X-ray absorption fine structure spectroscopy. The platinum-oxygen bond length increases from 2.07 to 2.13 angstrom A and the coordination number reduces from 4.0 to 2.5 between the ex situ and operating photocatalysts.