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Citation: Yang Qiu-Xia, Gao Gui-Lian, Wang Xue-Lin. Electropolymerized Hemin Film Electrode and its Catalytic Reuction of Oxygen[J]. Acta Physico-Chimica Sinica, ;2000, 16(08): 741-745. doi: 10.3866/PKU.WHXB20000813 shu

Electropolymerized Hemin Film Electrode and its Catalytic Reuction of Oxygen

1.
Department of Applied Chemistry,Shandong Institute of Building Materials,Jinan 250022

Received Date: 4 November 1999
Available Online: 15 August 2000

A polymer film of hemin was obtained on a graphite carbon electrode by cyclic voltammetric method in aqueous solution. Cyclic voltammograms of the film electrode in 0.1 mol•L-1 NaOH exhibited two pairs of stable and reversible redox waves with peak formal potential at -730 mV and 530 mV respectively. For thicker films at faster potential scan rates, peak currents proportional to (scan rate)1/2 means charge transport is controlled by diffusion in the films. Protonated films have anionic exchange properties. The poly-hemin electrode shows od electrocatalytic reduction capacity for oxygen. After a long period reduction of oxygen, the electroactivity of film was diminished.
- Modified electrode,
- Hemin,
- Electrocatalysis,
- Oxygen reduction,
- Polymer film
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