Electrocatalytic Hydrogen Evolution by Water-Soluble Cobalt (II), Copper (II) and Iron (III) meso-Tetrakis(carboxyl)porphyrin

作者：Qi, Xiao-Wen; Yang, Gang; Guo, Xiao-Shuang; Si, Li-Ping^*; Zhang, Hao; Liu, Hai-Yang^*

来源：European Journal of Inorganic Chemistry, 2023, 26(3): e202200613.

DOI：10.1002/ejic.202200613

• Electrocatalysis
• Hydrogen
• Transition metals
• Water-soluble porphyrins

Three water-soluble carboxyl metalloporphyrins, cobalt (II), copper (II) and iron (III) meso-tetrakis (carboxyl) porphyrin were prepared and applied as homogeneous electrocatalysts for hydrogen evolution reaction (HER) with acetic acid, trifluoroacetic acid, p-toluene sulfonic acid and water as proton sources. Cyclic voltammetry (CV) results revealed the HER underwent different routes for these metalloporphyrins. Electrocatalysis tests in buffer solution of pH=7.0 showed the TOFs of cobalt (II), copper (II) and iron (III) meso-tetrakis (carboxyl) porphyrin were 184.78, 160.28 and 184.87 mol(-1). h(-1) and the faradaic efficiency were 94.37 %, 93.01 % and 96.98 % at an overpotential of 788 mV, respectively. These results indicate the synthesized metal carboxyl porphyrins have good electrocatalytic activity for HER.

• 单位
  佛山科学技术学院