A comparative study of electrocatalytic hydrogen evolution by iron complexes of corrole and porphyrin from acetic acid and water

作者：Zhong, Ya-Qian; Hossain, Md. Sahadat; Chen, Ying; Fan, Qi-Hang; Zhan, Shu-Zhong; Liu, Hai-Yang^*

来源：Transition Metal Chemistry, 2019, 44(5): 399-406.

DOI：10.1007/s11243-019-00307-5

• COBALT
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• ELECTROCHEMISTRY
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Iron complexes of corrole and porphyrin bearing electron-withdrawing meso-C6F5 groups had been used for the electrocatalytic evolution of hydrogen. In neutral buffer solution, evolution of hydrogen turnover frequency (TOF) values for iron corrole and iron porphyrin were 274 and 233 h(-1) at an overpotential of 838 mV versus standard hydrogen electrode (SHE). The corresponding TOF values had dropped sharply to 19.79 h(-1) and 14.36 h(-1) in acetic acid media at an overpotential of 942 mV versus SHE. Interestingly, hydrogen evolution catalyzed by Fe(III) porphyrin was mainly via an Fe(I)-H intermediate, while a higher valent Fe(III)-H intermediate was observed for Fe(IV) corrole.

• 出版日期2019-8
• 单位华南理工大学