Electrocatalytic O2 reduction by covalently immobilized mononuclear copper(I) complexes: evidence for a binuclear Cu2O2 intermediate.
Electrocatalytic O2 reduction by covalently immobilized mononuclear copper(I) complexes: evidence for a binuclear Cu2O2 intermediate.
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DOI:
10.1021/ja106338h
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发表时间:
2011-03-23
影响因子:
15
通讯作者:
Chidsey CE
中科院分区:
文献类型:
--
作者:
McCrory CC;Devadoss A;Ottenwaelder X;Lowe RD;Stack TD;Chidsey CE
A CuI complex of 3-ethynyl-phenanthroline covalently immobilized to an azide-modified glassy carbon surface is an active electrocatalyst for the 4-electron reduction of O2 to H2O. The rate of O2 reduction is 2nd order in Cu coverage at moderate overpotential, suggesting that two CuI species are necessary for efficient 4-electron reduction of O2. Mechanisms for O2 reduction are proposed that are consistent with the observations for this covalently immobilized system and previously reported results for a similar physisorbed CuI system.
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