钛基修饰氧化物电极降解敌百虫的研究

采用高温热氧化法制备了具有较高的电催化活性和良好稳定性的钛基锡锑铅氧化物电极,以有机磷农药敌百虫为目标有机物,考察了电压、电解质加入量、pH值、电解时间等因素对敌百虫降解率和溶液COD的影响.在外加电压为9 V,电解质硫酸钠的质量浓度0.1 mol/L,pH=6,电解100 mg/L的敌百虫模拟废水,2.0 h降解率为87.54%,3.0 h降解率为95.60%,此时溶液的COD去除率达72.58%.

Preparation of Oxide Electrode and Application to Degradation Trichlorfon

The Ti/Sn,Sb,Pb oxide electrodes were prepared by thermal oxidation.The electro-catalytic activity of the electrode was increased and this electrode was highly stabilized.The results showed that the removal efficiency and the removal COD of trichlorfon were influenced by voltage,the concentration of electrolyte(Na2SO4),pH,the reaction time.With voltage of 9 V,0.1 mol/L Na2SO4,the removal efficiency of trichlorfon solution(100 mg/L)was 87.54% when the electrolysis's time was 2.0 h and the removal efficiency was 95.60% when the electrolysis's time was 3.0 h.When the simulated waste water was treated for 3 h,the removal rate of COD was 72.58%.