The mechanism of electrochemical reduction of hydrogen peroxide on silver nanoparticles

被引：44

作者：

Cai, Xiaosheng ^{[1
]}

Tanner, Eden E. L. ^{[2
,3
]}

Lin, Chuhong ^{[2
]}

Ngamchuea, Kamonwad ^{[2
]}

Foord, John S. ^{[1
]}

Compton, Richard G. ^{[2
]}

机构：

[1] Univ Oxford, Dept Chem, Chem Res Lab, Mansfield Rd, Oxford OX1 3TA, England

[2] Univ Oxford, Dept Chem, Phys & Theoret Chem Lab, South Parks Rd, Oxford OX1 3QZ, England

[3] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2018年 / 20卷 / 03期

基金：

欧洲研究理事会;

关键词：

ANODIC-STRIPPING VOLTAMMETRY; OXYGEN REDUCTION; CARBON ELECTRODES; MASS-TRANSPORT; DIFFUSION; ARRAYS; SENSOR; ELECTROREDUCTION; HEMOGLOBIN; COVERAGE;

D O I：

10.1039/c7cp07492a

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 reduction of hydrogen peroxide on a silver nanoparticle modified boron doped diamond electrode in a neutral solution is shown to proceed through a CE mechanism. Hydrogen peroxide undergoes a disproportionation reaction to form oxygen (and water) on the silver surface, creating a diffusion layer of oxygen, which, at a sufficiently biased electrode, is then reduced to hydrogen peroxide. Voltammetry and a full mechanistic simulation are undertaken to confirm the mechanism, showing at short times a dependence of the reductive signal on waiting time prior to voltammetric analysis reflecting the extent of the disproportionation step which occurs prior to voltammetric analysis.

引用

页码：1608 / 1614

页数：7

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