铂纳米粒子电极上NO吸附和还原的CV及原位FTIR研究

doi:10.61558/2993-074X.2014

电化学（中英文） ›› 2009, Vol. 15 ›› Issue (4): 392-396. doi: 10.61558/2993-074X.2014

铂纳米粒子电极上NO吸附和还原的CV及原位FTIR研究

程前;姜艳霞;曾冬梅;孙世刚;

厦门大学固体表面物理化学国家重点实验室化学化工学院化学系;

收稿日期:2009-11-28 修回日期:2009-11-28 出版日期:2009-11-28 发布日期:2009-11-28

Cyclic Voltammetric and in-situ FTIR Spectroscopic Studies of Adsorption and Reduction of NO on Electrode of Pt Nanoparticles

CHENG Qian,JIANG Yan-xia,ZENG Dong-mei,SUN Shi-gang*

(State Key Laboratory of Physical Chemistry of Solid Surfaces,Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China

Received:2009-11-28 Revised:2009-11-28 Published:2009-11-28 Online:2009-11-28

摘要/Abstract

摘要： 运用电化学循环伏安法(CV)和原位傅里叶变换红外反射光谱(in situ FTIRS)研究了酸性介质中铂纳米粒子电极(nm-Pt/GC)上NO吸附及其电催化还原过程.结果表明,NO分子的吸附是电催化还原的重要步骤.在铂纳米粒子电极上饱和吸附的NO存在两种不同键合强度的吸附态,其中弱吸附的NO(NOW)在0.60 V至-0.05 V电位区间还原生成N2O和NH4+;而强吸附的NO(NOS)则在-0.05 V至-0.15 V区间还原,其产物为NH+.

关键词: 铂纳米粒子, 电催化, NO, 吸附和还原, 原位FITR反射光谱

Abstract: Adsorption and reduction of NO on electrode of Pt nanoparticles in acid solutions were studied by means of cyclic voltammetry(CV) and in-situ FTIR spectroscopy.The results indicated that the reduction of NO is a complicated process including the adsorption of NO on electrode surface.Two types of surface-bonded NO were determined on Pt nanoparticles.The weakly adsorbed NO was reduced between 0.6 V and-0.05 V,which yielded nitrous oxide(N2O) and ammonium(NH+4) as products;while the strongly bonded NO was reduced at more negative potentials between-0.05V and-0.15V,producing only NH4+ species.

Key words: nanostructured Pt electrode, NO, adsorption and electrocatalytic reduction, cyclic voltammetry, in-situ FTIR spectroscopy

中图分类号:

O646.54

程前, 姜艳霞, 曾冬梅, 孙世刚, . 铂纳米粒子电极上NO吸附和还原的CV及原位FTIR研究[J]. 电化学（中英文）, 2009, 15(4): 392-396.

CHENG Qian, JIANG Yan-xia, ZENG Dong-mei, SUN Shi-gang. Cyclic Voltammetric and in-situ FTIR Spectroscopic Studies of Adsorption and Reduction of NO on Electrode of Pt Nanoparticles[J]. Journal of Electrochemistry, 2009, 15(4): 392-396.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.61558/2993-074X.2014

https://electrochem.xmu.edu.cn/CN/Y2009/V15/I4/392

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铂纳米粒子电极上NO吸附和还原的CV及原位FTIR研究

Cyclic Voltammetric and in-situ FTIR Spectroscopic Studies of Adsorption and Reduction of NO on Electrode of Pt Nanoparticles

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