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Electrocatalytic Reduction of Peroxodisulfate in 0.5 M NaOH at Copper Electrodes. A Combined Quartz Microbalance and Rotating Ring/Disc Electrode Investigation Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal The Journal of Physical Chemistry B
ISSN: 1520-6106 , E-ISSN: 1520-5207
Output data Year: 1997, Volume: 101, Number: 14, Pages: 2411-2414 Pages count : 4 DOI: 10.1021/jp9627279
Tags ALKALINE-SOLUTIONS; SURFACE; OXIDATION; CU(111); FILM
Authors Hartinger S. 1,2 , Rosenmund J. 1 , Savinova E. 1,3 , Wasle S. 1 , Doblhofer K. 1
Affiliations
1 Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin-Dahlem, Germany
2 Instituto de Quimica, Universidade Estadual de Campinas, CP 6154, 13081 970 Campinas, SP, Brazil
3 Boreskov Institute of Catalysis, Lavrentjeva 5, 630090 Novosibirsk, Russia

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.
Cite: Hartinger S. , Rosenmund J. , Savinova E. , Wasle S. , Doblhofer K.
Electrocatalytic Reduction of Peroxodisulfate in 0.5 M NaOH at Copper Electrodes. A Combined Quartz Microbalance and Rotating Ring/Disc Electrode Investigation
The Journal of Physical Chemistry B. 1997. V.101. N14. P.2411-2414. DOI: 10.1021/jp9627279 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Sep 6, 1996
Accepted: Dec 4, 1996
Published print: Apr 1, 1997
Identifiers:
publication_identifier.wos_identifier_type WOS:A1997WR42600004
publication_identifier.scopus_identifier_type 2-s2.0-0345434590
publication_identifier.rinz_identifier_type 41798967
publication_identifier.accession_number_identifier_type 1997:303241
publication_identifier.chemical_accession_number_identifier_type 126:269690
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