Oxygen Reduction Mediated by Single Nanodroplets Containing Attomoles of Vitamin B12: Electrocatalytic Nano-Impacts Method

被引：52

作者：

Cheng, Wei ^{[1
]}

Compton, Richard G. ^{[1
]}

机构：

[1] Univ Oxford, Dept Chem, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2015年 / 54卷 / 24期

基金：

欧洲研究理事会;

关键词：

catalytic reaction; electrochemistry; nanodroplets; oxygen reduction; soft nanoparticles; COLLISION EVENTS; EMULSION ELECTROSYNTHESIS; ELECTROCHEMICAL DETECTION; NANOPARTICLE COLLISIONS; DROPLET COLLISIONS; CATALYTIC-ACTIVITY; ELECTRODE; AMPLIFICATION; PLATINUM; SYSTEMS;

D O I：

10.1002/anie.201501820

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the use of single Vitamin B-12 nanodroplets to mediate the reduction of oxygen in neutral buffer. Electron transfer to single Vitamin B-12 nanodroplets is observed using the nano-impacts method and shown to be quantitative. The mechanism of mediated oxygen reduction by single VB12 droplets is revealed as via both Co-II and Co-I reduced from Co-III in VB12 through one or two electron transfer followed by the four-electron reduction of oxygen.

引用

页码：7082 / 7085

页数：4

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