吉林大学学报（理学版）2013，Vol.51Issue(4)：727-734,8.DOI:10.7694/jdxblxb20130437
PbO2电极的改性及非均相电催化氧化废水中的硝基苯
Modification of PbO2 Electrode and the Treatment of Nitrobenzene Wastewater by Heterogeneous Catalysts and Electrode Oxidation
摘要
Abstract
We prepared Ti/PbO2,Ti/F-PbO2 and Ti/F-La-PbO2 electrodes with thermal decomposition-plating method and analyzed the surface morphology and phase of Ti/PbO2,Ti/F-PbO2 and Ti/F-La-PbO2 electrodes with SEM and XRD.With the experiment of accelerating electrolytic life and oxidizing nitrobenzene in wastewater,we researched the influences of stability and electric catalytic activity of PbO2 electrodes with F-doping and F-and La3 + co-doping.SEM and XRD were used to analyze the surface structure and crystal type of Fe3+/MgO.The catalyst was added in the electric catalytic oxidation system to test the influence of the relevant factors on degradation of COD and NB in the wastewater.The experimental results show that compared with undoped Ti/PbO2 electrode,the incorporation of La3+ made the electrode coating surface grain refinement.Different doping produces certain effects on growth orientation of crystal.F-doping significantly raised electrolytic life of PbO2 anode.La3+ doping improved the conductive performance.Compared with those of Ti/PbO2,Ti/F-PbO2 electrode,electrical catalytic degradation activity of the Ti/F-La-PbO2 electrode increased significantly.In the electrolytic system,the catalyst added significantly improved the electrolytic reaction rate,COD and nitrobenzene degradations.The degradation of nitrobenzene fit the pseudo-first-order reaction kinetics in the amount of the catalyst.关键词
硝基苯/催化剂/电解/催化氧化Key words
nitrobenzene/ catalyst / electrolytic/ catalytic oxidation分类
资源环境引用本文复制引用
刘淼,冷粟,陈嵩岳,刘歆,陈力可,刘南,焦昕倩,全福民..PbO2电极的改性及非均相电催化氧化废水中的硝基苯[J].吉林大学学报（理学版）,2013,51(4):727-734,8.基金项目
国家科技重大专项基金(批准号:2012ZX07202-009). （批准号:2012ZX07202-009）
