OXYGEN REDUCTION IN ACID-MEDIA - EFFECT OF IRON SUBSTITUTION BY COBALT ON HEAT-TREATED NAPHTHALOCYANINE IMPREGNATIONS SUPPORTED ON PRESELECTED CARBON-BLACKS

被引：31

作者：

BILOUL, A

CONTAMIN, O

SCARBECK, G

SAVY, M

VANDENHAM, D

RIGA, J

VERBIST, JJ

机构：

[1] CNRS,1 PL A BRIAND,LEI,F-92195 MEUDON,FRANCE

[2] TWENTE UNIV,7500 AE ENSCHEDE,NETHERLANDS

[3] FAC NOTRE DAME DE LA PAIX,B-5000 NAMUR,BELGIUM

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1992年 / 335卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(92)80240-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

FeNPc(1.2) impregnations were investigated at various loadings using a rotating-disk electrode, voltammetry and X-ray photoelectron spectroscopy (XPS) techniques. Optimal activity takes place at monolayer coverage, and major demetallation occurs after prolonged exposure to acid solution. The substitution of Fe by Co enables the electrochemical performances to reach those presented by 10% Pt on Vulcan and stops the demetallation process. The application of fast atomic bombardment secondary ion mass spectrometry (FABS) together with XPS sheds light on the detrimental role of some electrophilic groups attached to the carbon black catalyst interface.

引用

页码：163 / 186

页数：24

共 23 条

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