ELECTROCATALYTIC ACTIVITY OF COIITPP-PYRIDINE COMPLEX MODIFIED CARBON ELECTRODE FOR CO2 REDUCTION

被引：69
|
作者：
ATOGUCHI, T
ARAMATA, A
KAZUSAKA, A
ENYO, M
机构：
[1] HOKKAIDO UNIV,CATALYSIS RES CTR,SAPPORO,HOKKAIDO 060,JAPAN
[2] HOKKAIDO UNIV,FAC VET MED,SAPPORO,HOKKAIDO 060,JAPAN
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1991年 / 318卷 / 1-2期
关键词：
D O I：
10.1016/0022-0728(91)85312-D
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A cobalt(II)tetraphenylporphyrin (CoIITPP)-pyridine complex modified glassy carbon electrode (CoTPP/py/GC) was prepared and characterized in the form of CoIITPP-py-NHCO-GC. The catalytic activity for the electrochemical reduction of CO2 was studied in phosphate buffer; the electrode showed a high catalytic activity for CO2 reduction to CO at potentials more negative than -1.0 V vs. SCE (-0.4 V vs. RHE), with a current efficiency of 92% for CO production at -1.1 V vs. SCE. CoTPP/py/GC also showed a high durability of the catalytic activity and the overall turnover number (mol of CO produced/mol of CoIITPP on GC) exceeded 10(7). The role of the pyridine in CoTPP/py/GC is discussed in connection with the activity and stability as an electrode.
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页码：309 / 320
页数：12
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