研究报告
沈宏,夏伊静,戴启洲,陈建孟.新型二氧化铅电极性能及掺杂机理研究[J].环境科学学报,2013,33(2):445-450
新型二氧化铅电极性能及掺杂机理研究
- Performance and doped mechanism of a novel PbO2 anode
- 关键词：电化学氧化 掺杂β-PbO2电极 对甲基苯磺酸 掺杂机理
- 基金项目：国家科技支撑计划(No.2011BAE07B09);高等学校博士学科点专项科研基金资助项目(No.20113317120004);浙江省自然科学基金(No.Y5090272);浙江省重点科技创新团队项目(No.2011R09048-04)
- 作者
- 单位
- 沈宏
- 浙江工业大学生物与环境工程学院, 杭州 310032
- 夏伊静
- 浙江工业大学生物与环境工程学院, 杭州 310032
- 戴启洲
- 浙江工业大学生物与环境工程学院, 杭州 310032
- 陈建孟
- 浙江工业大学生物与环境工程学院, 杭州 310032
- 摘要：利用热分解-电镀法制备了新型Ti基聚四氟乙烯(PTFE)、F-共掺杂β-PbO2阳极(Ti/PTFE-F--β-PbO2)处理对甲基苯磺酸(p-TSA),确定了初始pH值为2、p-TSA初始质量浓度500 mg·L-1和电流密度30 mA·cm-2是该种电极催化氧化p-TSA的优化操作工艺条件.在优化工艺条件下,Ti/PTFE-F--β-PbO2电极3 h内的p-TSA降解率达到94.46%,TOC降解率达到了36.43%.结合SEM和XRD分析表征,探讨了新型Ti基聚四氟乙烯(PTFE)、F-共掺杂β-PbO2电极的掺杂机理,为该电极用于化工废水污染控制提供技术支撑.
- Abstract：Ti-substrate F-, PTFE co-doped PbO2 anodes (Ti/PTFE-F--β-PbO2) were prepared by thermal decomposition-electrodeposition technique for the treatment of simulated wastewater containing p-toluene sulfonic acid (p-TSA). The optimized operational factors were confirmed for the degradation of p-TSA, which were pH 2, current density 30 mA·cm-2 and initial quality concentration of p-TSA 500 mg·L-1. Under the optimized conditions, the concentration and TOC removal of p-TSA after 3 hours degradation reached 94.46% and 36.43%, respectively. X-ray diffraction (XRD) and scanning environmental microscopy (SEM) were used to analyze the mechanism of Ti-substrate F-, PTFE co-doped PbO2 electrode, which could be helpful for the application of the electrode in medical wastewater pollution control.
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