Switching Electrocatalytic Hydrogen Evolution Pathways through Electronic Tuning of Copper Porphyrins DOI

Xinyang Peng,

Mengchun Zhang,

Haonan Qin

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(13)

Published: Feb. 7, 2024

Abstract The electronic structure of metal complexes plays key roles in determining their catalytic features. However, controlling structures to regulate reaction mechanisms is fundamental interest but has been rarely presented. Herein, we report tuning Cu porphyrins switch pathways the hydrogen evolution (HER). Through controllable and regioselective β ‐oxidation porphyrin 1 , synthesized analogues 2–4 with one or two ‐lactone groups either a cis trans configuration. Complexes 1–4 have same Cu‐N 4 core site different structures. Although led large anodic shifts reductions, displayed similar HER activities terms close overpotentials. With electrochemical, chemical theoretical results, show that catalytically active species switches from I for 0 . This work thus significant present mechanism‐controllable via catalysts.

Language: Английский

Electrocatalytic Hydrogen Evolution of Transition Metal (Fe, Co and Cu)–Corrole Complexes Bearing an Imidazole Group DOI Open Access

Lingwei Wu,

Yanfang Yao,

Shi-Yin Xu

et al.

Catalysts, Journal Year: 2023, Volume and Issue: 14(1), P. 5 - 5

Published: Dec. 19, 2023

The study of the hydrogen evolution reaction (HER) by non-noble transition metals is great significance for production energy. In this work, a new 5,15-bis-(pentafluorophenyl)-10-[4-(1H-imidazole) phenyl]-corrole and its metal complexes (metal = Co, Cu, Fe) were synthesized used electrocatalyzed HER in DMF organic solvent aqueous media. prepared cobalt corrole showed best catalytic performance both Its turnover frequency (TOF) efficiency (C.E) could reach 265 s−1 1.04 when TsOH was as proton source solvent. media, TOF also 405 h−1. may go through an EECEC or ECEC (E: electron transfer, C: chemical step) pathway these catalysts, depending on acidity concentration source. present work successfully demonstrates that imidazole at meso-phenyl group improve electrocatalytic activity corroles.

Language: Английский

Citations

8
Efficient electrochemical water oxidation catalyzed by N4-coordinated nickel complexes under neutral conditions DOI
Zhijun Ruan, Jinfeng Dong,

Wang Jieying

et al.

Sustainable Energy & Fuels, Journal Year: 2024, Volume and Issue: 8(8), P. 1769 - 1774

Published: Jan. 1, 2024

Two novel nickel complexes are reported for the first time. Both can catalyze water oxidation under neutral conditions with low onset overpotential. Combined experiments confirm that they genuine molecular catalysts.

Language: Английский

Citations

2
Theoretical study of tandem catalysts based on metal porphyrin-phthalocyanine two-dimensional carbon-rich conjugated frameworks for the co-reduction of NO3− and CO2 in the electrosynthesis of methylamine DOI

Fengling Luo,

Ling Guo

Materials Today Communications, Journal Year: 2024, Volume and Issue: 41, P. 110246 - 110246

Published: Aug. 28, 2024

Language: Английский

Citations

2
O–O bond formation via radical coupling in a dinuclear iron water oxidation catalyst with high catalytic activity DOI
Ge Li,

Mårten S. G. Ahlquist

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(6), P. 2456 - 2459

Published: Jan. 1, 2024

A mechanism involving O–O bond formation via radical coupling of two subunits is proposed for a dinuclear iron complex. The can proceed at low overpotentials and agrees with the experimental kinetics.

Language: Английский

Citations

1
Switching Electrocatalytic Hydrogen Evolution Pathways through Electronic Tuning of Copper Porphyrins DOI

Xinyang Peng,

Mengchun Zhang,

Haonan Qin

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(13)

Published: Feb. 7, 2024

Abstract The electronic structure of metal complexes plays key roles in determining their catalytic features. However, controlling structures to regulate reaction mechanisms is fundamental interest but has been rarely presented. Herein, we report tuning Cu porphyrins switch pathways the hydrogen evolution (HER). Through controllable and regioselective β ‐oxidation porphyrin 1 , synthesized analogues 2–4 with one or two ‐lactone groups either a cis trans configuration. Complexes 1–4 have same Cu‐N 4 core site different structures. Although led large anodic shifts reductions, displayed similar HER activities terms close overpotentials. With electrochemical, chemical theoretical results, show that catalytically active species switches from I for 0 . This work thus significant present mechanism‐controllable via catalysts.

Language: Английский

Citations

1