2002•Unpublished venueRequires access

Mechanistic Study of Oxidation of Hypophosphite on Pt Electrodes by SNIFTIRS

Huihuang Wu

Abstract

The oxidation of hypophosphite on a polycrystalline platinum electrode was studied by SNIFTIRS and cyclic voltammetry, the in-situ IR spectra were analyzed as a function of Pt electrode potentials in the solution of 0.5 mol/L H 2SO 4+0.1 mol/L NaH 2PO 2. It was found that the dissociative adsorption of hypophosphite ions occurs on Pt surface, and the oxidation product is H 3PO 4, rather than H 2PO 3 - which was considered to produce on Ni electrodes, thereby a new insight into mechanism of hypophosphite oxidation on Pt in acidic media was provided.

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Key concepts: Hypophosphite, Chemistry, Platinum, Cyclic voltammetry, Inorganic chemistry, Electrode, Adsorption, Ion