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|標題:||Characteristic and electrocatalytic behavior of ruthenium Prussian blue analogue film in strongly acidic media||作者:||Kumar, A.S.
|關鍵字:||ruthenium oxide;Prussian blue;strong acid;glucose;electrocatalysis;glassy-carbon electrode;inorganic films;tungsten-oxide;oxidation;cyanide;electrochemistry;sensor;ruo2||Project:||Journal of Molecular Catalysis a-Chemical||期刊/報告no：:||Journal of Molecular Catalysis a-Chemical, Volume 252, Issue 1-2, Page(s) 63-69.||摘要:||
The remarkable stability of ruthenium Prussian blue analogue (designated as RuOx-PB) in strongly acidic media and for the enzymeless electrocatalytic oxidation of glucose was demonstrated in this study. The RuOx-PB combinative film neither dissolves nor denatures in concentrated acids, such as HClO4, HCl, H2SO4, and HNO3, investigated in this study. The catalytic response was found to directly proportional to [H+]. Such features are unique since neither RuOx- nor PB-based compounds are effective for direct carbohydrate oxidation in acidic media. The RuOx-PB film showed a highly reversible redox peak at similar to 1.2 V in 5 M HClO4 as a result of the fast proton-coupled electron transfer behavior of high valent ruthenium intermediate, Ru-VII/VI. The formation of internal multiple-hydrogen bond as well as the generation of the > Ru-VII=O species in strongly acidic media were proposed to play a key role in this feature. The RuOx-PB holds high potential for use in catalytic oxidation, corrosion protection, biofuel cell, etc. (c) 2006 Elsevier B.V All rights reserved.
|Appears in Collections:||化學系所|
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