文献类型：期刊文献

英文题名：Highly efficient photocatalyst based on all oxides WO3/Cu2O heterojunction for photoelectrochemical water splitting

作者：Zhang, Jing[1];Ma, Haipeng[2];Liu, Zhifeng[1]

第一作者：Zhang, Jing

通讯作者：Liu, ZF[1]

机构：[1]Tianjin Chengjian Univ, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China;[2]Xinxiang Univ, Sch Civil Engn & Achitecture, Xinxiang 453003, Peoples R China

第一机构：Tianjin Chengjian Univ, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China

通讯机构：[1]corresponding author), Tianjin Chengjian Univ, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China.

年份：2017

卷号：201

起止页码：84-91

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20164102883723);Scopus(收录号：2-s2.0-84989947614);WOS:【SCI-EXPANDED(收录号:WOS:000385472500010)】；

基金：The authors gratefully acknowledge financial support from National Nature Science Foundation of China (No. 51102174), State Key Laboratory of Heavy Oil Processing (No. SKLHOP201505) and Natural Science Foundation of Tianjin (16JCYBJC17900).

语种：英文

外文关键词：WO3; Cu2O; Heterojunction; Photoelectrochemical water splitting

摘要：We present a novel all oxides semiconductor WO3/Cu2O heterojunction photoelectrode applied in photoelectrochemical water splitting. Different amount of Cu2O was loaded onto WO3 NRs by controlling the electrodeposition time and the amount influence on the photoelectrocatalytic activity of the different samples has been researched. This all oxides structure exhibits a remarkably high photoelectrocatalytic performance with a significant improved photocurrent density of 1.37 mA cm(-2) was measured at a bias voltage of 0.8 V vs RHE, which was about 3.51 times higher than that of pristine WO3 NRs. This amazing PEC performance due to the broader light absorption spectrum, the enhanced photogenerated charge carriers transfer efficiency and the suppressive electron-hole recombination rate. The research results can demonstrate a promising way for designing all oxide semiconductor heterojunction structure so that it can improve photoelectrocatalytic efficiency. Moreover, these results also suggest that the WO3 NRs/Cu2O arrays heterojunction structure has a great potential application for efficient PEC water splitting devices. (C) 2016 Elsevier B.V. All rights reserved.