Volume 19, Issue 6 2205758
Research Article

Partial Sulphidation to Regulate Coordination Structure of Single Nickel Atoms on Graphitic Carbon Nitride for Efficient Solar H2 Evolution

Guanchao Wang

Guanchao Wang

State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024 P. R. China

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Ying Ma

Ying Ma

Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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Ting Zhang

Ting Zhang

State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024 P. R. China

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Yuefeng Liu

Yuefeng Liu

Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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Baojun Wang

Baojun Wang

State Key Laboratory of Clean and Efficient Coal Utilization, Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Taiyuan, 030024 P. R. China

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Riguang Zhang

Corresponding Author

Riguang Zhang

State Key Laboratory of Clean and Efficient Coal Utilization, Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Taiyuan, 030024 P. R. China

E-mail: [email protected]; [email protected]

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Zhongkui Zhao

Corresponding Author

Zhongkui Zhao

State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024 P. R. China

E-mail: [email protected]; [email protected]

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First published: 03 December 2022
Citations: 4

Abstract

To develop a non-precious highly efficient cocatalyst to replace Pt on graphitic carbon nitride (g-C3N4) for solar H2 production is great significant, but still remains a huge challenge. The emerging single-atom catalyst presents a promising strategy for developing highly efficient non-precious cocatalyst owing to its unique adjustability of local coordination environment and electronic structure. Herein, this work presents a facile approach to achieve single Ni sites (Ni1-N2S) with unique local coordination structure featuring one Ni atom coordinated with two nitrogen atoms and one sulfur atom, confirmed by high-angle annular dark-field scanning transmission electron microscopy, X-ray absorption spectroscopy, and density functional theory calculation. Thanks to the unique electron structure of Ni1-N2S sites, the 1095 µmol g−1 h−1 of high H2 evolution rate with 4.1% of apparent quantum yield at 420 nm are achieved. This work paves a pathway for designing a highly efficient non-precious transition metal cocatalyst for photocatalytic H2 evolution.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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