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Citation: Yang Dagang, Zhang Wuchang, Lu Jiaxing. PtCl₆^2- Bound PVP Modified Electrode in Catalytic Oxidation of Fe²⁺[J]. Chinese Journal of Applied Chemistry, ;1994, 11(2): 73-76. shu

PtCl₆^2- Bound PVP Modified Electrode in Catalytic Oxidation of Fe²⁺

1.
Department of Chemistry, East China Normal University, Shanghai 200062

Received Date: 17 May 1993
Available Online: 30 August 1993

The electrode coated with PVP (polyvinyl-pyridine) film electrostatically bound has been studied by means of cyclic voltammetry.The results showed that the electrode has a good electrocatalytic activity in the oxidation of Fe²⁺ to Fe³⁺ in aqueous acidic solution.The rate-controlling step and the kinetic parameters of catalytic reaction were determined by rotating disk electrode coated with PVP electrostatically bound PtCl₆^2-.The rateconstant of the catalvtic reaction was calculated to be 5.67×10⁶cm³·mol^-1·s^-1.The number of electron transfered and the anodic transfer coeffcient were determined.The electrode coated with promoted PVP electrostatically bound PtCl₆^2- give very stable response for the oxidation of Fe²⁺ to Fe³⁺.
- hexachloroplatinic acid,
- polyvinylpyridine,
- chemical modified electrode,
- ferrousion,
- catalytic oxidation
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PtCl₆^2- Bound PVP Modified Electrode in Catalytic Oxidation of Fe²⁺