A Bifunctional Electrocatalyst Containing Tris(2,2′-bipyridine) Ruthenium(II) and 12-Molybdophosphate Bulk-Modified Carbon Paste Electrode

✍ Scribed by Xiu-Li Wang; Zheng-Bo Han; En-Bo Wang; Hong Zhang; Chang-Wen Hu

• Book ID: 102178700
• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 215 KB
• Volume: 15
• Category: Article
• ISSN: 1040-0397
• DOI: 10.1002/elan.200302668

✦ Synopsis

Abstract

The electroactive composite containing tris(2,2′‐bipyridine) ruthenium(II) and 12‐molybdophosphate (RuPMo~12~) was synthesized and first used as a bifunctional electrocatalyst to fabricate a chemically bulk‐modified carbon paste electrode (RuPMo~12~‐CPE) by direct mixing. The electrochemical behavior of the RuPMo~12~‐CPE was studied by cyclic voltammetry. The RuPMo~12~‐CPE presents good electrocatalytic activity not only toward the reduction of hydrogen peroxide and bromate, which is attributed to the function of molybdophosphate, but also toward the oxidation of arsenite, which is primarily attributed to the function of tris(2,2′‐bipyridine) ruthenium(II). The remarkable advantage of the RuPMo~12~‐CPE is its good stability owing to the insolubility of RuPMo~12~ and reproducibility of surface renewal.