Efficient charge separation in hierarchical NiS@ZnIn_(2)S_(4) hollow nanospheres for photocatalytic water splitting

作     者：Kai Wu Liang Mao Xiuquan Gu Xiaoyan Cai Yulong Zhao Kai Wu;Liang Mao;Xiuquan Gu;Xiaoyan Cai;Yulong Zhao

作者机构：School of Materials Science and PhysicsChina University of Mining and TechnologyXuzhou 221116China Jiangsu Province Engineering Laboratory of High Efficient Energy Storage Technology and EquipmentChina University of Mining and TechnologyXuzhou 221116China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2022年第33卷第2期

页      面：926-929页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070205[理学-凝聚态物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the Natural Science Foundation of Jiangsu Province (Youth Fund Nos.BK20190640 and BK20190641)。 

主　　题：Hollow sphere Heterostructure Photocatalyst Charge separation Hydrogen production 

摘      要：In this work,hierarchical Ni S@Zn In_(2)S_(4) heterostructure was developed by constructing ultra-thin Zn In;S;(ZIS) nanosheets on hollow Ni S nanospheres for hydrogen production from photocatalytic water splitting.The Ni S@ZIS displayed a strong optical absorption ability in the visible region and a high specific surface area of 33.14 m^(2)/g.The Type-I band alignment in Ni S@ZIS heterostructure was determined by the combination of UV–vis absorption spectroscopy and Mott-Schottky curves.The photocatalytic hydrogen production of Ni S@ZIS (1.24 mmol g;h;) was nearly 5.6 times higher than that of ZIS under visible light,in the absence of any co-catalyst and sacrificial agent.The separation and migration of charge in Ni S@ZIS were characterized by a series of spectroscopy and photo/electrochemical tests,which verified the efficient charge transfer from ZIS to Ni S.