文献类型：期刊文献

英文题名：Controllable Synthesis of Hexagonal WO3 Nanoplates for Efficient Visible-Light-Driven Photocatalytic Oxygen Production

作者：Wang, Yu Lei[1];Wang, Xue Lu[1];Li, Yu Hang[1];Fang, Li Jun[1];Zhao, Jun Jie[1];Du, Xu Lei[1];Chen, Ai Ping[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：12

期号：4

起止页码：387

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20170803360109);WOS:【SCI-EXPANDED(收录号:WOS:000397025000001)】；

基金：This work was financially supported by National Natural Science Foundation of China (21573068 and 21603073), SRF for ROCS, SEM, Program of Shanghai Subject Chief Scientist (15XD1501300), Fundamental Research Funds for the Central University (WD1616003 and WD1514303), China Postdoctoral Science Foundation Funded Project (2016M591615 and 2016M601523), National Postdoctoral Program for Innovative Talents (BX201600050) and Science and Technology Commission of Shanghai Municipality (14JC1490900).

语种：英文

外文关键词：charge-carrier separation; photocatalysis; visible light; water chemistry; WO3 nanoplates

摘要：Facilitating charge-carrier separation and transfer is fundamentally important to improve the photocatalytic performance of semiconductor materials. Herein, two-dimensional hexagonal WO3 nanoplates were synthesized by a two-step route: rapid evaporation and solidphase sintering. The as-prepared WO3 exhibits an enhanced activity of photocatalytic water oxidation compared to bulk monoclinic WO3. The electron dynamics analysis reveals that a more efficient charge-carrier separation in the former can be obtained, the origin of which can be attributed to an increased number of surface defects in hexagonal WO3 nanoplates. This work not only presents a novel and simple method to produce two-dimensional hexagonal WO3 nanoplates, but also demonstrates that surface defects and two-dimensional geometric structures can promote the charge separation, which may be extended to the design of other efficient photocatalysts.