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O-2 ELECTROCATALYSIS IN ACID-MEDIA ON IRON NAPHTHALOCYANINE IMPREGNATIONS - EFFECT OF NITRIC-ACID TREATMENT ON DIFFERENT CARBON-BLACK SUPPORTS

被引：13
|
作者：
COOWAR, F
CONTAMIN, O
SAVY, M
SCARBECK, G
VANDENHAM, D
RIGA, J
VERBIST, JJ
机构：
[1] TWENTE UNIV, 7500 AE ENSCHEDE, NETHERLANDS
[2] FAC NOTRE DAME PAIX, B-5000 NAMUR, BELGIUM
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1990年 / 282卷 / 1-2期
关键词：
D O I：
10.1016/0022-0728(91)85094-6
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
O2 electrocatalysis on (2,3)FeNPc impregnations on different carbon blacks was investigated in H2SO4 medium. The effect of nitric acid treatment on the carbon black support is to enhance both the activity and stability of the catalyst. Moreover, as seen by XPS, the dissolution of iron is impeded by this oxidation treatment which, however, does not increase the density of active sites with the BET surface area. From the data presented, a redox mechanism can hardly be invoked, in contrast to the situation for FeNPc impregnations on active charcoals. © 1990.
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页码：141 / 159
页数：19
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