Application of the sol-gel technique to polyoxometalates: towards a new chemically modified electrode

A novel chemically-modified electrode containing 12-molybdophosphoric acid was achieved on the surface of platinum electrode by sol-gel technique. The electrochemical behavior of the modified electrode was characterized by cyclic voltammetry in detail. The film electrode obtained was very stable and...

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Bibliographic Details
Published in:Electrochimica acta 2000-01, Vol.45 (10), p.1639-1644
Main Authors: Song, Wenbo, Liu, Ying, Lu, Nan, Xu, Hongding, Sun, Changqing
Format: Article
Language:English
Subjects:
12-Molybdophosphoric acid
Chemically modified electrode
Chemistry
Electrocatalysis
Electrochemistry
Electrodes: preparations and properties
Exact sciences and technology
General and physical chemistry
Hydrogen peroxide
Other electrodes
Sol-gel technique
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Summary:A novel chemically-modified electrode containing 12-molybdophosphoric acid was achieved on the surface of platinum electrode by sol-gel technique. The electrochemical behavior of the modified electrode was characterized by cyclic voltammetry in detail. The film electrode obtained was very stable and exhibited electrocatalytic response for reduction of bromate, chlorate and hydrogen peroxide. Hydrogen peroxide was determined amperometrically at the modified electrode in the concentration range of 3×10 −2 to 2×10 −5M and a detection limit of 7×10 −6M (signal-to-noise ratio 3).
ISSN:0013-4686
1873-3859
DOI:10.1016/S0013-4686(99)00326-6