含 -CF 取代基的铜卟啉的电催化析氢反应

Electrocatalytic hydrogen evolution reaction with a Cu porphyrin bearing -CF substituents.

作者信息

Li Wenzi, Peng Xinyang, Qin Haonan, Xu Yuhan, Han Jinxiu, Lei Haitao, Cao Rui

机构信息

Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.

出版信息

Dalton Trans. 2024 Dec 10;53(48):19121-19125. doi: 10.1039/d4dt03098b.

DOI:10.1039/d4dt03098b

PMID:39588664

Abstract

Cu tetrakis(trifluoromethyl)porphyrin (1) was synthesized and examined as an electrocatalyst for the hydrogen evolution reaction (HER). We showed that 1 is highly efficient for the electrocatalytic HER in acetonitrile with trifluoroacetic acid (TFA) and outperforms Cu tetrakis(pentafluorophenyl)porphyrin (2) by decreasing the onset overpotential by 220 mV. The / value ( is the catalytic peak current and is the non-catalytic peak current) with 1 is 97, while it is 53 with 2. These results suggest that for Cu porphyrins, -CF substituents are much more effective than -CF substituents to enhance the HER.

摘要

合成了四（三氟甲基）铜卟啉（1），并将其作为析氢反应（HER）的电催化剂进行了研究。我们发现，在含有三氟乙酸（TFA）的乙腈中，1对HER具有高效的电催化活性，并且通过将起始过电位降低220 mV，其性能优于四（五氟苯基）铜卟啉（2）。1的/值（为催化峰电流，为非催化峰电流）为97，而2的该值为53。这些结果表明，对于铜卟啉，-CF取代基在增强HER方面比-CF取代基更有效。