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, Zhifeng

机构：[1] School of Materials Science and Engineering, Tianjin Chengjian University, Tianjin, 300384, China; [2] Tianjin Key Laboratory of Building Green Functional Materials, Tianjin, 300384, China; [3] School of Civil Engineering and Architecture, Xinxiang University, Xinxiang, 453003, China

第一机构：School of Materials Science and Engineering, Tianjin Chengjian University, Tianjin, 300384, China

通讯机构：[1]School of Materials Science and Engineering, Tianjin Chengjian University, Tianjin, 300384, 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：EI(收录号：20191306676316);Scopus(收录号：2-s2.0-85063199710)

语种：英文

外文关键词：Cadmium sulfide - Catalysts - Cobalt compounds - Heterojunctions - II-VI semiconductors - Light absorption - Nickel compounds - Photoelectric devices - Photoelectrochemical cells - Tungsten compounds

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/cm2 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. ? 2019 Elsevier B.V.