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聚苯胺中间层改性Ti/PbO2电极的制备及其降解性能 认领 引用 被引量：11
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作者 赵媛媛 刘文静 +3 位作者 董培 张亮 杨政伟 赵朝成 《化工进展》 EI CAS CSCD 北大核心 2019年第12期5478-5486,共9页
引入导电聚合物聚苯胺膜(PANI,polyaniline)对Ti/PbO2电极进行改性,采用两步电沉积法成功制备出Ti/PANI/PbO2电极。通过扫描电镜(SEM)、X射线衍射(XRD)、线性伏安扫描(LSV)和交流阻抗(EIS)对制备的电极进行表征,以甲基橙为目标污染物,... 引入导电聚合物聚苯胺膜(PANI,polyaniline)对Ti/PbO2电极进行改性,采用两步电沉积法成功制备出Ti/PANI/PbO2电极。通过扫描电镜(SEM)、X射线衍射(XRD)、线性伏安扫描(LSV)和交流阻抗(EIS)对制备的电极进行表征,以甲基橙为目标污染物,探讨了PANI的沉积时间对电极性能的影响,并研究了Ti/PANI/PbO2电极对罗丹明B和4-硝基苯酚的降解性能。结果表明,PANI的引入未影响活性层PbO2的晶相结构和形貌特征,但显著提高了电极的析氧电位,Ti/PANI/PbO2的析氧电位可达3.43V。当PANI聚合时间为30min时,电极Ti/PANI-30/PbO2的电化学性能和电催化降解效果最佳。在电流密度为30mA/cm^2、污染物初始浓度为50mg/L、Na2SO4浓度为0.1mol/L的实验条件下,反应120min后,Ti/PANI-30/PbO2对甲基橙、罗丹明B和4-硝基苯酚的去除率分别为99.8%、99.9%和94.0%。 展开更多
关键词 Ti/PANI/PbO2电极 聚苯胺膜 电催化氧化 羟基自由基 甲基橙降解
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Electrochemical Oxidation of Chlorimuron-ethyl on Ti/SnO_2-Sb_2O_5/PbO_2 Anode for Waste Water Treatment 认领 引用
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作者 YU Shi-jun XUE Bin +2 位作者 WANG Jian-ya SUN Jian SHEN Zhi-qiu 《Chemical Research in Chinese Universities》 SCIE CAS 2010年第4期630-635,共6页
The electrochemical oxidation of chlorimuron-ethyl on metry. The electrochemical behaviour of the electrode in a sodium Ti/SnO2-Sb2O5/PbO2 electrode was studied by cyclic voltamsulfate solution and in the mixture solu... The electrochemical oxidation of chlorimuron-ethyl on metry. The electrochemical behaviour of the electrode in a sodium Ti/SnO2-Sb2O5/PbO2 electrode was studied by cyclic voltamsulfate solution and in the mixture solution of sodium sulfate and chlorimuron-ethyl was studied. The experimental results of cyclic voltammetry show that the acidic medium was suitable for the efficient electrochemical oxidation of chlorimuron-ethyl. Some electro-generated reagent was formed in the electrolysis process and chlorimuron-ethyl could be oxidized by the electro-generated reagent. A Ti/SnO2-Sb2O5/PbO2 electrode was used as the anode and the electrolysis experiment was carried out under the optimized conditions. The electrolysis process was monitored by UV-Vis spectrometry and high performance liquid chromatography（HPLC）, and the chemical oxygen demand（COD） was determined by the potassium dichromate method. The mechanism of chlorimuron-ethyl to be oxided was studied primarily by the cyclic voltammetry and UV-Vis spectrometry. The results of electrolysis experiment demonstrate the possibility of the electrode to be used as an anode for the electrochemical treatment of chlorimuron-ethyl contained in waste water. 展开更多
关键词 Ti/SnO2-Sb2O5/PbO2 electrode Chlorimuron-ethyl Cyclic voltammetry Electrochemical oxidation Waste water treatment
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