A general method to construct single-atom catalysts supported on N-doped graphene for energy applications

Linghui Liu; Song Liu; Lu Li; Haifeng Qi; Hongbin Yang; Yanqiang Huang; Zidong Wei; Li Li; Jinming Xu; Bin Liu

doi:10.1039/C9TA11715F

A general method to construct single-atom catalysts supported on N-doped graphene for energy applications†

Linghui Liu,^ab Song Liu,^bc Lu Li,^b Haifeng Qi,^bc Hongbin Yang,^d Yanqiang Huang,

^b Zidong Wei,

^a Li Li,*^a Jinming Xu*^b and Bin Liu

*^d

Author affiliations

* Corresponding authors

^a School of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing 400044, P. R. China
E-mail: liliracial@cqu.edu.cn

^b State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China
E-mail: xujm@dicp.ac.cn

^c University of Chinese Academy of Sciences, Beijing 100049, China

^d School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
E-mail: LiuBin@ntu.edu.sg

Abstract

Single atom catalysts (SACs) with atomically dispersed catalytic sites have shown great promise for energy related chemical reactions. In this work, a facile and general approach to synthesize a large variety of transition metal (Fe, Ni, Co, Cu, etc.) SACs with a large surface area and a hierarchical structure using layered montmorillonite (MMT) as the structural template was developed. Specifically, the as-synthesized nickel SAC (Ni-SAC) exhibits outstanding performance toward electrochemical CO₂ reduction, achieving CO₂-to-CO conversion with more than 90% faradaic efficiency in the potential range from −0.6 to −1.1 V vs. RHE, and the iron SAC (Fe-SAC) displays excellent ORR activity, with the half-wave potential surpassing that of the state-of-the-art Pt/C catalyst.

Journal of Materials Chemistry A

A general method to construct single-atom catalysts supported on N-doped graphene for energy applications†

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A general method to construct single-atom catalysts supported on N-doped graphene for energy applications

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