文献类型：期刊文献

英文题名：Effects of redox mediators on α-Fe2O3 exposed by {012} and {104} facets for photocatalytic water oxidation

作者：Wang, Yu Lei[1];Li, Yu Hang[1];Wang, Xue Lu[1];Hou, Yu[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：206

起止页码：216

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20170403279514);WOS:【SCI-EXPANDED(收录号:WOS:000395602000022)】；

基金：This work was financially supported by Program of Science and Technology Commission of Shanghai Municipality (14JC1490900), National Natural Science Foundation of China (21373083 and 21573068), Program of Shanghai Subject Chief Scientist (15XD1501300), Fundamental Research Funds for the Central University (WD1514301 and WD1514303), China Postdoctoral Science Foundation Funded Project (2016M591615) and National Postdoctoral Program for Innovative Talents (BX201600050).

语种：英文

外文关键词：Photocatalysis; Redox mediator; Oxygen; alpha-Fe2O3; Facets

摘要：The mechanism study of redox mediator to transfer the photogenerated electrons is extremely desirable for artificial Z-scheme photocatalytic systems. Here we find that the alpha-Fe2O3 exposed by {012} and {104} facets can facilitate the reduction of IO3-, which results in increasing the activity of photocatalytic water oxidation significantly. By employing NaIO3 as an electron acceptor, the O-2 evolution activity (309.4 mu mol h(-1) g(-1)) of alpha-Fe2O3 photocatalyst mainly exposed by {012} and {104} facets is 84 times higher than that (3.68 mu mol h(-1) g(-1)) of alpha-Fe2O3 mostly exposed by {101} and {111} planes. We anticipate that the findings in this work may open the door for further development of enhanced Z-scheme photocatalytic systems. (C) 2016 Elsevier B.V. All rights reserved.