Citation: Xiaomeng Zhang, Gege Zhao, Zhongfei Li, Liang Zhu, Yingpeng Cheng, Haiwei Du, Chuhong Zhu, Ya Dang, Daochuan Jiang, Yupeng Yuan. Spatially Isolated Noble-Metal-Free Redox Cocatalysts on CdS Nanorods for Increased Photocatalytic Hydrogen Generation[J]. Chinese Journal of Structural Chemistry, ;2022, 41(9): 220910. doi: 10.14102/j.cnki.0254-5861.2022-0168 shu

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

Xiaomeng Zhang ^{1, +} ,
Gege Zhao ^{1, +} ,
Zhongfei Li ¹ ,
Liang Zhu ¹ ,
Yingpeng Cheng ¹ ,
Haiwei Du ¹ ,
Chuhong Zhu ¹ ,
Ya Dang ³ ,
Daochuan Jiang ^{1, 3,,} ,
Yupeng Yuan ^{1, 2,,}

1.
School of Materials Science and Engineering, 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 Lab of Anhui Province for Photoelectric conversion, Anhui University, Hefei 230601, China
3.
Anhui Chinaherb Flavors & Fragrances Co., Ltd., Bengbu 233400, China

Corresponding author: Daochuan Jiang, jdczlx@ahu.edu.cn Yupeng Yuan, yupengyuan@ahu.edu.cn
Received Date: 10 July 2022
Accepted Date: 16 August 2022
Available Online: 18 August 2022

Figures(6)

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 noble-metal-free CdS/MoS₂/CoPi ternary photocatalyst via a visible light-induced synthesis route, in which MoS₂ reduction 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 MoS₂ and CoPi redox cocatalysts endow CdS nanorods with a rapid charge separation, which enhances their hydrogen generation activity. The CdS/MoS₂/CoPi photocatalyst with optimized CoPi amount achieves the highest H₂ generation 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/MoS₂ (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.
- spatially isolated cocatalyst,
- light-induced synthesis,
- cadmium sulfide,
- photocatalytic H₂ generation
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