Mechanism of electrochemical degradation of phenol with Ti/RuO2-Pt anode
Electroehemical degradation of phenol was evaluated at Ti/RuO2-Pt anode.The electrochemical approach is a novel process for effecfive removal of pheno1.At the current density of 20 mA/cm2,the phenol was degraded by the Ti/RuO2-Pt anode from 8 mg/L to O with 0.3 g/L sodium chloride (NaCl)as supporting electrolyte in 20 min.With NaCl as supporting electrolyte,specific anode surface treatment of the RuO2-Pt coating provided the anode with an apparent catalytic function for rapid phenol oxidation that Was probably brought about by radicals generated from anodic electrolyte electrolysis.It was found that the Ti/RuO2-Pt anode had a higher oxygen evolution potential,which would increase the current efficiency for electrochemical degradation.The oxidation of phenol by hydroxyl radical and hypochlorous acid was the main path way of electrochemical phenol degradation.Moreover,Radicals production analysis showed that HCOl formed in the presence of sodium chloride during electrolysis would promote the oxidation of phenol.
Electrochemical degradation Phenol Oxygen evolution potential Hydroxyl radicalsHypochlorous acid
Miao LI Chuanping FENG Weiwu HU Zhenya ZHANG Norio SUGIURA
Doetoral Program in Life and Environmental Sciences,University of Tsukuba,Tsukuba 3058572,Japan School of Water Resources and Environment,China University of Geosciences(Beiiing),Beijing100083,Chi School of Water Resources and Environment,China University of Geosciences(Beiiing) Beijing100083,Chi
国际会议
西安
英文
307-313
2008-05-15（万方平台首次上网日期，不代表论文的发表时间）