Chemical Research in Chinese Universities ›› 2024, Vol. 40 ›› Issue (6): 1106-1115.doi: 10.1007/s40242-024-4013-9

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Electrocatalytic Hydrogen Evolution by Binuclear Metal (M=Co, Fe, Mn) Xanthine Bridged Bis-corrole

XU Shiyin1, CEN Jinghe1, YANG Gang1, SI Liping1,2, XIAO Xinyan1, LIU Haiyang1   

  1. 1. School of Chemistry and Chemical Engineering, Guangdong Provincial Key Laboratory of Fuel Cell Technology, South China University of Technology, Guangzhou 510641, P. R. China;
    2. School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, P. R. China
  • Received:2024-01-14 Online:2024-12-01 Published:2024-10-26
  • Contact: SI Liping,lipingsi@fosu.edu.cn;XIAO Xinyan,cexyxiao@scut.edu.cn;LIU Haiyang,chhyliu@scut.edu.cn E-mail:lipingsi@fosu.edu.cn;cexyxiao@scut.edu.cn;chhyliu@scut.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos. 21671068, 22005052) and the Research Fund Program of Guangdong Provincial Key Laboratory of Fuel Cell Technology, China (No. FC202211).

Abstract: Three binuclear metal (M=Co, Fe, Mn) xanthine bridged bis-corrole complexes were synthesized and investigated as electrocatalysts for the hydrogen evolution reaction (HER). All the prepared metal bis-corrole catalysts exhibited good HER performance when using acetic acid (AcOH), trifluoroacetic acid (TFA) and p-toluenesulfonic acid (TsOH) as proton sources. The catalytic HER activities followed an order of Co bis-corrole (1)> Fe bis-corrole (2)> Mn bis-corrole (3) and complex 1 exhibited a significantly lower overpotential at -270 mV (in TsOH). Furthermore, complex 1 may go EECC and EECEC pathways in organic solvents (E: electron transfer step, C: proton coupling) and exhibit an HER activity with a turnover frequency (TOF) of 85 h-1 and a Faraday efficiency of 94% when using water as proton source.

Key words: Electrocatalysis, Bis-corrole, Hydrogen evolution reaction, Transition metal