Spatially Isolated Noble-Metal-Free Redox Cocatalysts on CdS Nanorods for Increased Photocatalytic Hydrogen Generation  

作　　者：Xiaomeng Zhang Gege Zhao Zhongfei Li Liang Zhu Yingpeng Cheng Haiwei Du Chuhong Zhu Ya Dang Daochuan Jiang Yupeng Yuan 

机构地区：[1]SchoolofMaterials Science andEngineering,Anhui University,Hefei 230601,China [2]Key Laboratory of Structure and Functional Regulation of Hybrid Materials(Anhui University),Ministry of Education,and Energy Materials and Devices Key Labof Anhui Provincefor Photoelectric conversion,Anhui University,Hefei 230601,China [3]Anhui Chinaherb Flavors&Fragrances Co.,Ltd.,Bengbu 233400,China

出　　处：《Chinese Journal of Structural Chemistry》2022年第9期105-111,共7页结构化学（英文）

基　　金：financially supported by National Natural Science Foundation of China(22102002,52072001,51872003);Natural Science Foundation of Anhui Province(2108085QE192)。

摘　　要：Spatially isolated oxidation and reduction cocatalysts on a semiconductor can realize efficient charge separation and thereby lead to increased photocatalytic hydrogen generation. However, the effective preparation of such photocatalysts has proven challenging.Herein, we report the facile synthesis of a novel noblemetal-free CdS/MoS/CoPi ternary photocatalyst via a visible light-induced synthesis route, in which MoSreduction cocatalysts were precisely grown on the two terminals of CdS nanorods, while CoPi oxidation cocatalysts were preferentially anchored onto the sidewalls of CdS nanorods. Such spatially isolated MoSand CoPi redox cocatalysts endow CdS nanorods with a rapid charge separation, which enhances their hydrogen generation activity. The CdS/MoS/CoPi photocatalyst with optimized CoPi amount achieves the highest Hgeneration rate of 206 μmol/h, which is 21 and 2 times higher than that achieved by using CdS alone(9.7 μmol/h) and CdS/MoS(105 μmol/h), respectively. The present work highlights the effectiveness of the spatial isolation of reduction and oxidation sites for efficient charge separation and thereby provides a promising strategy for the preparation of highly active photocatalysts.

关 键 词：spatially isolated cocatalyst light-induced synthesis cadmium sulfide photocatalytic H2 generation 

分 类 号：TQ116.2[化学工程—无机化工] O643.36[理学—物理化学] O644.1[理学—化学]