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Abstract

The poly(o-phenylenediamine)(PPD)filmed graphite electrode was formed byelectro-polymerization of o-phenylenediamine in acidified(pH=1)0.2 mol·L-1 Na_2SO_4 solutionusing the cyclic voltammetric methed. The catalytic effect of the electrcareduction of oxygen in acidsolution was demonstrated by the voltammogram of the electrede in the oxygen saturated acid solutionof Na_2SO_4. The current efficiency of the reduction of oxygen to hydrogen peroxide was determined byIhe electrolysis in a divided cell under the condition of constant current. The various effectsinfluencing the accm ulation of H_2O_2 in the catholyte were discussed.

Keywords

Hydrogen poroxide, Oxygen electrede, phenylenediamine, Electro-catalysis, Electro-polymerization

Publication Date

1995-05-28

Online Available Date

1995-05-28

Revised Date

1995-05-28

Received Date

1995-05-28

References

1OhsakaT,WatanabeT,KitamuraFetal.ElectrocatalysisofO_2,reductionatpoly(o-phenylenediamine)-andpoly(o-aminophenol)-cooatedglassycarbenelectredes.J.Chem.Soc.Chem.Commun.,1991,10722OyalnaN,OhsakaT,ChibaKetal.EffectsofsupportingelectrolyteandpHonchargetransportwithinelectropolymerizedpoly(o-phenylenediamine)filmsdepeitedongrapbiteelectredes.Bull.Chem.Soc.Jpn.,1988,61:10953ChibaK,OhsakaT,OhnukiYetal.Electrochemicalpreparationofaladderpolymercontainingphenazinerings.J.Electroanal.Chem.,1987,219:1174WatanabeT,TokudaK,Ohsaka,T.Electocatalyticactivityofelectropolymerizedfilmsofo-phenylenediamineforO_2reduction.DenkiKagakooyobiKogyoButsuriKagaku,1992,60(6):455(Eng.)5陆兆锷,李衡,赵英明,多孔电极中氢的阴极还原制备过氧化氢.化工学报,1988(2):2546张关永,陆兆锷,锺天耕等.离子膜金电极上的氧还原和一氧化碳氧化.华东理工大学学报,1994,20(3):403

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