降级(电信)
电化学
电极
机制(生物学)
材料科学
化学工程
化学
电子工程
工程类
物理
物理化学
量子力学
作者
Qizhou Dai,Yijing Xia,Chen Sun,Mili Weng,Jun Chen,Jiade Wang,Jianmeng Chen
标识
DOI:10.1016/j.cej.2013.08.036
摘要
Abstract Electrochemical degradation of levodopa in aqueous solution was investigated over PbO 2 electrode, La–PbO 2 electrode, Gd–PbO 2 electrode and La–Gd–PbO 2 electrode. The degradation efficiencies of these four electrodes were investigated and it was found that the catalytic effect decreased in the following order: La–Gd–PbO 2 electrode > La–PbO 2 electrode > Gd–PbO 2 electrode > PbO 2 electrode. The main influencing factors on electrochemical decomposition of levodopa over La–Gd–PbO 2 electrode were evaluated as a function of electrolyte concentration, initial levodopa concentration and current density. The results indicated that the maximum removal of levodopa, COD and TOC reached 100%, 79.20% and 65.31% respectively, after 120 min electrolysis at an initial 100 mg L −1 levodopa concentration at constant current density of 50 mA cm −2 with a 0.1 mol L −1 Na 2 SO 4 supporting electrolyte solution. The degradation mechanism of levodopa in electrochemical oxidation system is analyzed and a possible degradation pathway for the anodic oxidation of levodopa is proposed based on the intermediates identified.
科研通智能强力驱动
Strongly Powered by AbleSci AI