文献类型：期刊文献

中文题名：WO_3 nanoflakes decorated with CuO clusters for enhanced photoelectrochemical water splitting

英文题名：WO_3 nanoflakes decorated with CuO clusters for enhanced photoelectrochemical water splitting

作者：Chongwu Wang[1];Jianfeng Tang[1];Xinyu Zhang[1];Ling Qian[1];Huagui Yang[1]

机构：[1]Department Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology

年份：2018

卷号：28

期号：2

起止页码：200

中文期刊名：Progress in Natural Science:Materials International

外文期刊名：自然科学进展·国际材料（英文版）

收录：Scopus;CSCD:【CSCD2017_2018】；

基金：financially supported by National Natural Science Foundation of China(21573068);National Natural Science Funds for Distinguished Young Scholar(51725201);SRF for ROCS,SEM,SRFDP,Fundamental Research Funds for the Central Universities(222201718002);Program of Shanghai Subject Chief Scientist(15XD1501300)

语种：英文

中文关键词：Photoelectrochemistry;Water;splitting;Tungsten;trioxide;photoanode;CuO;clusters;Heterojunction

外文关键词：Photoelectrochemistry;Water splitting;Tungsten trioxide photoanode;CuO clusters;Heterojunction

摘要：The low quantum efficiency arising from poor charges transfer and insufficient light absorption is one of the critical challenges toward achieving highly efficient water splitting in photoelectrochemical cells. Three dimensions(3D) structures and heterojunctions have received intensive research interests recent years due to their excellent ability to separate photo-generated charges as well as the enhanced light harvesting property. Herein,3 D Cu O/WO_3 structure was fabricated through a facile solvothermal method followed by chemical bath deposition. The loading of Cu O clusters on WO_3 nanoflake arrays results in a much improved photocurrent density compared with that of pristine WO_3 nanoflake arrays, which reaches 1.8 m A/cm2 at 1.23 V vs. the reversible hydrogen electrode. The electrochemical impedance spectroscopy measurement demonstrates that the improved performance of Cu O/WO_3 electrode is attributed to the accelerated charge transfer kinetics as a result of the desirable band alignment in Cu O/WO_3 heterojunction. This work demonstrates a facile strategy to construct superior WO_3 electrode, which will ultimately allow for efficient storage of solar energy into hydrogen.
The low quantum efficiency arising from poor charges transfer and insufficient light absorption is one of the critical challenges toward achieving highly efficient water splitting in photoelectrochemical cells. Three dimensions (3D) structures and heterojunctions have received intensive research interests recent years due to their excellent ability to separate photo-generated charges as well as the enhanced light harvesting property. Herein,3D CuO/WO3 structure was fabricated through a facile solvothermal method followed by chemical bath deposition. The loading of CuO clusters on WO3 nanoflake arrays results in a much improved photocurrent density compared with that of pristine WO3 nanoflake arrays, which reaches 1.8 mA/cm2 at 1.23 V vs. the reversible hydrogen electrode. The electrochemical impedance spectroscopy measurement demonstrates that the improved performance of CuO/WO3 electrode is attributed to the accelerated charge transfer kinetics as a result of the desirable band alignment in CuO/WO3 heterojunction. This work demonstrates a facile strategy to construct superior WO3 electrode, which will ultimately allow for efficient storage of solar energy into hydrogen.