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Type: Artigo de periódico
Title: Electrocatalytic Reduction Of Peroxodisulfate In 0.5 M Naoh At Copper Electrodes. A Combined Quartz Microbalance And Rotating Ring/disc Electrode Investigation
Author: Hartinger S.
Rosenmund J.
Savinova E.
Wasle S.
Doblhofer K.
Abstract: From an electrochemical investigation by means of an electrochemical quartz microbalance, a rotating disc electrode, and a ring/disc electrode, two mechanisms for the reduction of S2O82- became apparent. Besides the well-known outer-sphere cathodic reduction, a catalytic mechanism of S2O82- reduction operates in a potential range between the surface oxide region (≈-0.5 V/SCE) and -1.0 V/SCE. It involves the chemical oxidation of the copper surface to a soluble Cu(I) species. The catalytic mechanism is concluded to result from the specific interaction between S2O82- and the Cu surface modified by the presence of subsurface oxygen.
Rights: fechado
Identifier DOI: 
Date Issue: 1997
Appears in Collections:Unicamp - Artigos e Outros Documentos

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