文献类型：期刊文献

英文题名：1D/0D WO3/CdS heterojunction photoanodes modified with dual co-catalysts for efficient photoelectrochemical water splitting

作者：Li, Yanting[1];Liu, Zhifeng[1,2];Zhang, Jing[1];Guo, Zhengang[1];Xin, Ying[1];Zhao, Lei[3]

第一作者：Li, Yanting

通讯作者：Liu, ZF[1]

机构：[1]Tianjin Chengjian Univ, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China;[2]Tianjin Key Lab Bldg Green Funct Mat, Tianjin 300384, Peoples R China;[3]Xinxiang Univ, Sch Civil Engn & Architecture, 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：2019

卷号：790

起止页码：493-501

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000464663600054)】；

基金：The authors gratefully acknowledge financial support from Science Funds of Tianjin for Distinguished Young Scholar (No. 17JCJQJC44800), Natural Science Foundation of Tianjin (No. 16JCYBJC17900) and Science and Technology Project of Henan Province (No. 182106000029).

语种：英文

外文关键词：WO3 photoanode; Heterojunction; Dual layer co-catalyst; Photoelectrochemical water splitting

摘要：The semiconductor photoelectrodes with sufficient light absorption, efficient photogenerated carrier separation and fast transport is crucial for photoelectrochemical (PEC) water splitting. Herein, we firstly report the 1D/0D WO3/CdS heterojunction photoanodes modified with dual co-catalysts NiOOH and Co-Pi to realize efficient water splitting. In this quaternary photoanode, the heterojunctions restrain the recombination of photo-generated electron-hole pairs and CdS acts as a light absorber for sufficient light absorption. Besides, the amorphous dual-layer co-catalyst NiOOH (the hole storage layer) and Co-Pi (hole transfer layer) can collect and delivery the holes to the Helmholtz layer, respectively. The photoanode yields 6.4 times improved photocurrent density (2.59 mA/cm(2) at 1.0 V vs RHE) in comparison with that of bare WO3 and a 300 mV negatively shifts in onset potential. Moreover, it exhibits high efficiency and persistent stability. These results reveal that heterojunctions and the synergetic effect of the dual-layer co-catalyst could effectively improve the performance for water splitting. Especially, it provides a superior way to design photoelectrodes towards PEC application. (C) 2019 Elsevier B.V. All rights reserved.