ISSN:
1572-8838
Keywords:
electrooxidation
;
β-D(+)glucose
;
underpotential deposition
;
Pt particle catalysts
;
polyaniline
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Electrical Engineering, Measurement and Control Technology
Notes:
Abstract Platinum particles dispersed in a polyaniline film (PAni/Pt) provide a better catalyst than smooth Pt for the electrooxidation of β-d(+)glucose in perchloric acid aqueous solutions. The Pt particles are less sensitive to poison formation than smooth platinum. Their catalytic activity is influenced by modification with underpotential deposition (u.p.d.) of thallium, lead or bismuth. Up to 0.4V vs RHE the Pt particles show a better activity than u.p.d.- modified platinum particles. However, above 0.4V the u.p.d.-modified particles are more active than bare Pt particles. Underpotential deposition of cadmium inhibits the electrooxidation of β- d(+)glucose. The morphology and the nature of the metallic dispersion were examined by transmission electron microscopy.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1003433206439
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