Direct Reduction of Nitrite to N2 on a Pt(100) Electrode in Alkaline Media

被引：95

作者：

Duca, Matteo ^{[1
]}

Cucarella, Mar Oroval ^{[1
]}

Rodriguez, Paramaconi ^{[1
]}

Koper, Marc T. M. ^{[1
]}

机构：

[1] Leiden Univ, Leiden Inst Chem, NL-2300 RA Leiden, Netherlands

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 51期

关键词：

SINGLE-CRYSTAL ELECTRODES; AMMONIA OXIDATION; ELECTROCATALYTIC REDUCTION; PLATINUM-ELECTRODES; METAL ELECTRODES; NITROGEN-CYCLE; NITRATE; SURFACES; SITES; NOBLE;

D O I：

10.1021/ja1092503

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The selective reduction of NO2- to N-2 in 0.1 M NaOH was obtained at a Pt(100) electrode in a narrow but distinct potential region. This is the first report of such selectivity for this reaction on Pt(100), which is known to be the most catalytically active platinum surface toward NO2- reduction in alkaline media. Both ammonia and nitrous oxide are ruled out as possible reaction intermediates on the basis of online electrochemical mass spectrometry. Based on earlier work on ammonia oxidation, NH2 adsorbates are speculated to be involved in the reaction mechanism.

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页码：18042 / 18044

页数：3

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