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Electrocatalytic O2 Reduction by Covalently Immobilized Mononuclear Copper(I) Complexes: Evidence for a Binuclear Cu2O2 Intermediate

机译:电O2还原价固定单核铜(I)配合物:证据的双核Cu2O2中级

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摘要

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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