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Oxygen reduction on polycobaltprotoporphyrin film: I. Catalytic activity and stability of polycobaltprotoporphyrin film toward oxygen reduction
Author(s) -
Wang BaoChen,
Xiao ShaoRong
Publication year - 1989
Publication title -
acta chimica sinica english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 0256-7660
DOI - 10.1002/cjoc.19890070502
Subject(s) - chemistry , monolayer , catalysis , oxygen , adsorption , oxygen reduction , carbon fibers , reduction (mathematics) , chemical engineering , inorganic chemistry , electrode , organic chemistry , electrochemistry , composite material , biochemistry , materials science , geometry , mathematics , composite number , engineering
The catalytic activity of polycobaltprotoporphyrin (PCoPP) was compared with adsorbed cobaltprotoporphyrin monolayer. The results have shown that PCoPP film shows higher catalytic activity and stability than monolayer on glass carbon electrode in both alkaline and acid solution. Catalytic activity of PCoPP goes through a maximum with increase of film thickness. A model was proposed to explain such dependence. The effect of film thickness and solution pH on the stability of PCoPP film was studied.