Enhanced Electrocatalytic Performance of Anthraquinonemonosulfonate-Doped Polypyrrole Composite: Electroanalysis for the Specific Roles of Anthraquinone Derivative and Polypyrrole Layer on Oxygen Reduction Reaction
Release Time:2019-03-09 Hits:
Indexed by: Journal Article
Date of Publication: 2011-02-01
Journal: ELECTROANALYSIS
Included Journals: SCIE
Volume: 23
Issue: 2
Page Number: 355-363
ISSN: 1040-0397
Key Words: Anthraquinone; Doping; Electrochemistry; Oxygen reduction reaction; Polymers
Abstract: To analyze the specific roles of anthraquinone-2-sulfonate (AQS) and polypyrrole (PPy) layer on oxygen reduction reaction (ORR), the electrocatalytic reduction of oxygen was investigated on the AQS/PPy composite modified graphite electrode. Results show that the enhanced electrocatalytic performance is attributed to the excellent electrocatalytic activity of the immobilized AQS functional groups to mediate two-electron reduction of O(2) to H(2)O(2). The PPy layer may not participate in ORR, but it can further catalyze the two-electron reduction of H(2)O(2) to produce H(2)O in the potential range more negative than that the two-electron reduction of oxygen proceeds efficiently on the AQS sites.
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