Electrocatalytic oxidation of 2-chlorophenol on a composite PbO2/polypyrrole electrode in aqueous solution

✍ Scribed by B. J. Hwang; K. L. Lee

• Book ID: 104740892
• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 878 KB
• Volume: 26
• Category: Article
• ISSN: 0021-891X
• DOI: 10.1007/bf00364065

✦ Synopsis

The electrocatalytic oxidation of 2-chlorophenol on a composite PbO2/polypyrrole (PPy) electrode was carried out in 0.1 M H2SO 4 solution. The composite PbO2/PPy electrode was developed by the codeposition of polypyrrole and PbO2 microparticles on the PbO2/SnO2/Ti substrate. The PbO2 microparticles and polypyrrole in the composite electrode were observed to be hydrophilic active-sites and hydrophobic inactive-sites, respectively. The results indicated that the conversion of 2-chlorophenol and the efficiency of electrooxidation were improved on the hydrophobic-modified PbO2/ PPy electrode. The performance for electrooxidation of 2-chlorophenol on the composite PbO2/ PPy electrode was better than that on Pt or PbO2/SnO2/Ti electrodes. The thicker the composite (PbO2/PPy) layer, the more active-sites in the composite electrode and the more 2-chlorophenol could be oxidized.