The interplay between hydrogen evolution reaction and nitrate reduction on boron-doped diamond in aqueous solution: the effect of alkali cations

被引：33

作者：

Manzo-Robledo, A. ^{[1
,3
]}

Levy-Clement, C. ^{[2
]}

Alonso-Vante, N. ^{[1
]}

机构：

[1] Univ Poitiers, CNRS, IC2MP, UMR 7285, F-86022 Poitiers, France

[2] CNRS, ICMPE, UMR 7182, F-94320 Thiais, France

[3] IPN, ESIQIE, Mexico City 07738, DF, Mexico

来源：

ELECTROCHIMICA ACTA | 2014年 / 117卷

关键词：

Boron-doped diamond; HER; nitrate reduction; DEMS; cation effect; ELECTRODES; VOLTAMMETRY; SURFACES; OXYGEN;

D O I：

10.1016/j.electacta.2013.11.151

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The nitrate ion reduction was studied on boron-doped diamond (BDD) electrodes by real-time on-line differential electrochemical mass spectrometry (DEMS) coupled with chronoamperomety in K+, Na+ cation-containing electrolyte solutions. It was found, via steady state voltammetry, that the hydrogen evolution reaction (HER) was affected by the presence of K+ or Na+. A moderate HER occurs in K+-containing electrolyte solution favoring the reaction between NO3- and H-2 species, whereas in Na+-containing electrolyte solutions, the HER kinetics was more important leading to a suppression of molecular nitrogen generation. The use of isotope-labeled nitrogen and DEMS confirmed the influence of alkali cations toward the nitrate ion reduction. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：420 / 425

页数：6

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