Isolated Ni-atom catalyst supported on Ti3C2Tx with an asymmetrical C-Ni-N structure for the hydrogen evolution reaction

Haosen Yang; Pengfei Wu; Jiajing Pei; Bo Peng; Qingqing Liu

doi:10.1039/d3cc04930b

Isolated Ni-atom catalyst supported on Ti₃C₂T_x with an asymmetrical C-Ni-N structure for the hydrogen evolution reaction

Chem Commun (Camb). 2024 Jan 16;60(6):718-721. doi: 10.1039/d3cc04930b.

Authors

Haosen Yang¹, Pengfei Wu¹, Jiajing Pei², Bo Peng³, Qingqing Liu⁴

Affiliations

¹ School of Chemistry, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China.
² Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
³ Guangxi Key Laboratory of Polysaccharide Materials and Modification, Laboratory of Chemical and Biological Transforming Process of Guangxi Higher Education Institutes, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, 530008, China.
⁴ School of Physics, Beihang University, Beijing, 100191, China.

PMID: 38108441
DOI: 10.1039/d3cc04930b

Abstract

Single-atom catalysts (SACs), distinguished by their exceptional atomic efficiency and modifiable coordination structures, find wide-ranging applicability, notably in the context of the hydrogen evolution reaction (HER). Herein, we synthesized a Ti₃C₂T_x-based Ni single-atom catalyst (Ni SA@N-Ti₃C₂T_x) by immersing a single Ni atom into the Ti vacancies of Ti₃C₂T_x and using a N-doping strategy. X-Ray adsorption fine structure revealed the formation of local Ni-N₁C₁ and an unsaturated C-Ni-N bridge configuration for isolated Ni species. Moreover, Ni SA@N-Ti₃C₂T_x exhibited an excellent HER performance with an overpotential of 63 mV at 10 mV cm^-2. This work could enable use of MXene-based SACs in the HER.