Electrocatalytic water oxidation by a water-soluble copper complex with a pentadentate amine-pyridine ligand

Autor:	Zilin Zheng, Junyu Shen, Qijian Zhang, Jiayi Wang, Qi Chen, Xin Xia, Kaishan Yu, Ziyi Xu
Rok vydání:	2021
Předmět:	010405 organic chemistry Chemistry Ligand Inorganic chemistry Oxygen evolution 010402 general chemistry Electrocatalyst Electrochemistry 01 natural sciences Redox 0104 chemical sciences Inorganic Chemistry Reaction rate constant Bulk electrolysis Faraday efficiency
Zdroj:	Dalton Transactions. 50:10888-10895
ISSN:	1477-9234 1477-9226
DOI:	10.1039/d1dt01821c
Popis:	A water-soluble copper complex with a diamine-tripyridine ligand was synthesized successfully and well characterized. It was found to be catalytically active for the water oxidation reaction under basic conditions. Based on the electrochemical test result, this copper complex displayed an apparent rate constant (kcat) of 0.81 s-1 for the oxygen evolution reaction in 0.1 M phosphate buffer solution at pH 11.0. More importantly, the copper complex remained stable over 3 h of a bulk electrolysis experiment at 1.60 V with a Faradaic efficiency of 90.7% for O2 evolution, and the decrement of current density was only 1.9%. These results suggest that the pentadentate copper complex is an efficient and durable homogeneous Earth-abundant electrocatalyst for water oxidation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c65d4c949e1439a38ead058992fe7683 https://doi.org/10.1039/d1dt01821c Zobrazit plný text záznamu