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β-PbO_2电极的改性制备及其性能 认领 引用 被引量：23
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作者 蔡天晓 鞠鹤 武宏让 《表面技术》 CAS 北大核心 2002年第5期22-23,共2页
通过对传统电沉积 β PbO2 工艺技术的改进 (在镀液中加入纳米级TiO2 ) ,使镀层 β PbO2 ,的脆性大大降低 ,从而使其在温度为 90℃的H2 SO4 介质中使用 ,镀层不会与基材剥落 ,而是自然损耗。
关键词 β-PbO2电极 改性 制备 性能 电催化
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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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一种新型La掺杂PbO_2电极用于X-GRL降解的研究 认领 引用
3
作者 施辰阳 沙旭明 +4 位作者 白炜炜 陈柏峰 陈李庆 杨华云 李伟东 《杭州师范大学学报（自然科学版）》 CAS 2018年第5期499-505,共7页
为提高PbO_2电极对阳离子红X-GRL的去除效果,利用热分解电沉积法制备稀土La掺杂PbO_2电极(Ti/SnO_2-Sb_2O_3/PTFE-La-β-PbO_2,简写Ti/La-PbO_2).之后,根据电极对X-GRL及其TOC的去除效果,确定La的最佳掺杂比为Pb∶La=200mol∶2mol.通过... 为提高PbO_2电极对阳离子红X-GRL的去除效果,利用热分解电沉积法制备稀土La掺杂PbO_2电极(Ti/SnO_2-Sb_2O_3/PTFE-La-β-PbO_2,简写Ti/La-PbO_2).之后,根据电极对X-GRL及其TOC的去除效果,确定La的最佳掺杂比为Pb∶La=200mol∶2mol.通过对电流密度、电解质浓度和X-GRL的初始质量浓度等不同的参数条件优化,确定最佳降解条件为电流密度50mA/cm^2,电解质(Na_2SO_4)浓度0.10mol/L,X-GRL初始质量浓度100mg/L.在此条件下降解2h后,X-GRL及其TOC的去除率分别达到93.48%和52.07%.同时,采用扫描式电子显微镜(SEM)对电极表面进行分析,结果显示La掺杂PbO_2电极表面具有致密的结构和较好的结晶取向,有利于提高电极的催化活性并最终提高X-GRL的矿化程度.最后,利用了循环伏安法(CVs)验证了La掺杂PbO_2电极具有较高的析氧电位和电化学活性. 展开更多
关键词 电催化 La掺杂 PbO2电极 阳离子红X-GRL
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PbO_2和SnO_2电极电氧化纸业废水中木质素褪色和降解效果的研究 认领 引用 被引量：2
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作者 王志江 黄初升 +2 位作者 陈希慧 蔡民廷 刘红星 《广西师范学院学报（自然科学版）》 2003年第4期53-56,共4页
纯的和掺杂金属离子的PbO2 和SnO2 电极对电氧化纸业废水中木质素褪色和降解表现出一定的活性.当SnO2 电极掺杂Ni(II)后 。
关键词 PbO2电极 SnO2电极 电氧化 纸业废水 木质素 掺杂
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Enhancement of the electrocatalytic oxidation of antibiotic wastewater over the conductive black carbon-PbO2 electrode prepared using novel green approach 认领 引用 被引量：7
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作者 Xiangyu Wang Yu Xie +3 位作者 Guizhen Yang Jiming Hao Jun Ma Ping Ning 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2020年第2期109-124,共16页
The secondary pollution caused by modification of an electrode due to doping of harmful materials has long been a big concern.In this study,an environmentally friendly material,conductive carbon black,was adopted for ... The secondary pollution caused by modification of an electrode due to doping of harmful materials has long been a big concern.In this study,an environmentally friendly material,conductive carbon black,was adopted for modification of lead dioxide electrode(Pb02).It was observed that the as-prepared conductive carbon black modified electrode(C-PbO2)exhibited an enhanced electrocatalytical performance and more stable structure than a pristine Pb02 electrode,and the removal efficiency of metronidazole(MNZ)and COD by a 1.0%C-Pb02 electrode at optimal conditions was increased by 24.66%and 7.01%,respectively.Results revealed that the electrochemical degradation of MNZ wastewater followed pseudo-first-order kinetics.This intimates that the presence of conductive carbon black could improve the current efficiency,promote the generation of hydroxyl radicals,and accelerate the removal of MNZ through oxidation.In addition,MNZ degradation pathways through a C-Pb02 electrode were proposed based on the identified intermediates.To promote the electrode to treat antibiotic wastewater,optimal experimental conditions were predicted through the Box-Behnken design(BBD)method.The results of this study suggest that a C-Pb02 electrode may represent a promising functional material to pretreat antibiotic wastewaters. 展开更多
关键词 Conductive carbon black PbO2 electrode Metronidazole Electrochemical oxidation Box-Behnken design-response surface method
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Study on Lead Dioxide Modified Electrode and Its Application in Detection of Phenols 认领 引用 被引量：2
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作者 艾仕云 高梦南 +2 位作者 蔡琪 孙郑冬 金利通 《Chinese Journal of Chemistry》 SCIE CAS 2003年第2期157-161,共5页
The conditions for the preparation of PbO 2 modified Pt rotation disc electrode in solutions containing HClO 4 and Pb(II) were studied, and the morphology and composition of the obtained PbO 2 film were characterized ... The conditions for the preparation of PbO 2 modified Pt rotation disc electrode in solutions containing HClO 4 and Pb(II) were studied, and the morphology and composition of the obtained PbO 2 film were characterized by SEM and XRD techniques, respectively. The results show that the modification process of PbO 2 is dependent on the rotation velocity of the electrode and the concentrations of HClO 4 and Pb(II). And it was observed that the obtained PbO 2 film was rutile β PbO 2 structure. At a certain positive potential, HO· and HO 2· radicals can be generated on the surface of the modified PbO 2/Pt electrode and then oxidize phenols. According to the change of the responding anodic current, the determination of phenols was realizable and good results were obtained. 展开更多
关键词 PbO 2 modified electrode phenol determination
Studies on Degradation of Diquat Pesticide in Aqueous Solutions Using Electrochemical Method 认领 引用
7
作者 Nasser Abu Ghalwa Hazem M. Abu-Shawish +2 位作者 Mazen Hamada Khaled Hartani Abed Al Hakem Basheer 《American Journal of Analytical Chemistry》 CAS 2012年第2期99-105,共7页
The C/PbO2 electrode assisted electrochemical removal of diquat dibromide herbicides solutions has been the subject of the present investigation under several operating conditions. The optimum conditions of the treatm... The C/PbO2 electrode assisted electrochemical removal of diquat dibromide herbicides solutions has been the subject of the present investigation under several operating conditions. The optimum conditions of the treatment process are: current density of 150 mA/cm2, pH 2.2, NaCl concentration 2 g/L, temperature of 10?C and initial diquat concentration of 50 mg/L. The time of electrolysis is 60 min for degradation rate of diquat and chemical oxygen demand (COD) removal is 210 min. The results were obtained by UV-Vis spectrophotometer and the present designed electrode was coincident. 展开更多
关键词 Carbon Paste Electrode Herbicide C/PbO2 Electrode Electrooxidation Diquat Dibromide
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