First mononuclear copper(II) electro-catalyst for catalyzing hydrogen evolution from acetic acid and water

被引:85
作者
Cao, Jie-Ping [1 ]
Fang, Ting [1 ]
Fu, Ling-Zhi [1 ]
Zhou, Ling-Ling [1 ]
Zhan, Shu-Zhong [1 ]
机构
[1] S China Univ Technol, Coll Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China
基金
美国国家科学基金会;
关键词
Mononuclear copper(II)-complex; Molecular electro-catalyst; Hydrogen evolution; MOLYBDENUM-OXO CATALYST; ACTIVE-SITE; GENERATING HYDROGEN; ELECTROCATALYTIC PROPERTIES; DINUCLEAR PALLADIUM(I); AQUEOUS-SOLUTION; COMPLEX; REDUCTION; CHEMISTRY; SYSTEMS;
D O I
10.1016/j.ijhydene.2014.07.030
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The reaction of 2,3-bis(2-hydroxybenzylideneimino)-2,3-butenedinitrile (H2L) and CuCl2 center dot 2H(2)O affords a copper(II) complex [CuL] 1, a new molecular electrocatalyst, which has been determined by X-ray crystallography. Electrochemical studies indicate that the catalyst is the first mononuclear copper(II) species with a turnover frequency of 457 (pH 7.0) moles of hydrogen per mole of catalyst per hour at an overpotential of 817 mV vs SHE, which is higher than some reported molecular catalysts for electrochemical hydrogen production from neutral water. Sustained proton reduction catalysis occurs at glassy carbon (GC) to give H-2 over a 72 h electrolysis period with 91.5% Faradaic yield and no observable decomposition of the catalyst. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:13972 / 13978
页数:7
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