Noble metal-free core-shell CdS/iron phthalocyanine Z-scheme photocatalyst for enhancing photocatalytic hydrogen evolution

作     者：Weijie Zhang Xizhong Zhou Jinzhao Huang Shouwei Zhang Xijin Xu Weijie Zhang;Xizhong Zhou;Jinzhao Huang;Shouwei Zhang;Xijin Xu

作者机构：School of Physics and TechnologyUniversity of JinanJinan 250022China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第115卷第20期

页      面：199-207页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 070304[理学-物理化学(含∶化学物理)] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：the Independent Cultivation Program of Innovation Team of Ji’nan City(No.2019GXRC011) the National Natural Science Foundation of China(Nos.21707043 and 51908242) the Natural Science Foundation of Shandong Province(No.ZR2017BEE005)。 

主　　题：CdS/FePc Core-shell nanostructure Photocatalytic hydrogen evolution Z-scheme heterojunction 

摘      要：Improving the separation efficiency of photogenerated carriers and broadening the light absorption range of the photocatalyst are two important factors for improving the performance of the photocatalyst.In this paper,a new and efficient Z-scheme Cd S/iron phthalocyanine(Cd S/Fe Pc)core-shell nanostructure composite material is prepared by a simple solid-phase reaction method.There are two key points in the preparation of composite materials:one is that hydrogen bonding energy is closely connected with Fe Pc,another is that Fe Pc can be uniformly assembled on Cd S nanoparticles.The photocatalytic hydrogen evolution(PHE)of the Cd S/Fe Pc nanocomposite(73.01μmol/h)is 2.6 times higher than that of pure Cd S(26.67μmol/h).In addition,after 4 photocatalytic cycles,the PHE of the Cd S/Fe Pc composite is still 92.3%of the first cycle.There are three reasons for this situation:(1)The Z-scheme heterojunction is formed to improve the separation efficiency of photogenerated carriers;(2)Fe Pc expands the visible light absorption range of Cd S;(3)The large core-shell contact area is favorable for the separation of photo-induced carriers at the interfaces.This research is conducive to the further development of new photocatalytic materials with high efficiency,low cost and simple preparation.