Noncovalent immobilization of a nickel cyclam catalyst on carbon electrodes for CO2 reduction using aqueous electrolyte

被引：11

作者：

Greenwell, Francesca

Neri, Gaia

Piercy, Verity

Cowan, Alexander J. ^{[1
]}

机构：

[1] Univ Liverpool, Dept Chem, Liverpool, Merseyside, England

来源：

ELECTROCHIMICA ACTA | 2021年 / 392卷

基金：

英国工程与自然科学研究理事会;

关键词：

CO2; conversion; Electrocatalysis; Molecular catalyst; Gas diffusion electrode; ELECTROCATALYTIC REDUCTION; ELECTROCHEMICAL REDUCTION; PRODUCT SELECTIVITY; DIOXIDE; CONVERSION; MECHANISM; NI(CYCLAM)(+); MACROCYCLES; COMPLEXES; SURFACES;

D O I：

10.1016/j.electacta.2021.139015

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A pyrene modified nickel cyclam catalyst ([Ni(CycPy)](2+) = Ni(1-(4-(pyren-1-yl)butyl)-1,4,8,11-tetraazacyclotetradecane) has been synthesised and electrochemically characterised under both CO2 and N-2. The pyrene functional group forms a non-covalent interaction with carbon electrode supports and the immobilised [Ni(CycPy)](2+) complex remains electroactive. We report a [Ni(CycPy)](2+ )modified gas diffusion electrode (GDE) that is tested in aqueous electrolyte and shown to be active towards CO production. This is the first successful demonstration of a nickel cyclam modified GDE in aqueous solvent and shows the potential of this class of catalysts for use in co-electrolysis devices. (C) 2021 Elsevier Ltd. All rights reserved.

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页数：6

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