Electrocatalytic hydrogen evolution reaction with a Cu porphyrin bearing meso-CF3 substituents

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

doi:10.1039/d4dt03098b

Electrocatalytic hydrogen evolution reaction with a Cu porphyrin bearing meso-CF₃ substituents

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

Authors

Wenzi Li¹, Xinyang Peng¹, Haonan Qin¹, Yuhan Xu¹, Jinxiu Han¹, Haitao Lei¹, Rui Cao¹

Affiliation

¹ Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China. [email protected].

PMID: 39588664
DOI: 10.1039/d4dt03098b

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 i_cat/i_p value (i_cat is the catalytic peak current and i_p is the non-catalytic peak current) with 1 is 97, while it is 53 with 2. These results suggest that for Cu porphyrins, meso-CF₃ substituents are much more effective than meso-C₆F₅ substituents to enhance the HER.