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Electrocatalysis for proton reduction by a coated Nafion® membrane dispersing ruthenium moieties

Electrocatalytic proton reduction was studied using Ru-red ([(NH 3) 5Ru IIIORu IV(NH 3) 4ORu III(NH 3) 5]Cl 6) dispersed into a Nafion® membrane coated on a basal-plane pyrolytic graphite (BPG) electrode (denoted as BPG/Nf[Ru-red]) in a pH 1 electrolyte solution. It was found that the Nf[Ru-red]...

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Bibliographic Details
Published in:Electrochimica acta 2000-08, Vol.45 (24), p.4009-4014
Main Authors: Abe, Toshiyuki, Goto, Tomio, Ohzeki, Kunio, Kaneko, Masao
Format: Article
Language:English
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Summary:Electrocatalytic proton reduction was studied using Ru-red ([(NH 3) 5Ru IIIORu IV(NH 3) 4ORu III(NH 3) 5]Cl 6) dispersed into a Nafion® membrane coated on a basal-plane pyrolytic graphite (BPG) electrode (denoted as BPG/Nf[Ru-red]) in a pH 1 electrolyte solution. It was found that the Nf[Ru-red] shows high activity in H + reduction to produce H 2. The electrocatalytic reaction by Ru-red embedded in the polymer membrane started to take place by forming catalytically active species after irreversible change of the complex under cathodic conditions. Electrochemical features of the Ru-red in the membrane as well as electrocatalysis by the Nf[Ru-red] for H + reduction were discussed based on the results of CV measurement, UV–Vis spectroscopy before and after the electrochemical process and potentiostatic electrolysis.
ISSN:0013-4686
1873-3859
DOI:10.1016/S0013-4686(00)00486-2