【摘要】 采用溶胶-凝胶法制备TiO₂-SiO₂/GAC粒子电极,通过SEM、 XRD和N₂吸附-脱附对负载前后的活性炭粒子电极进行表征。通过紫外-可见分光光度法,比较二维和三维电催化体系中羟基自由基（·OH）的瞬时浓度大小。以氨氮废水为目标污染物进行三维电催化氧化降解实验,考察了初始pH值和槽电压对氨氮降解效率的影响。结果表明,在初始pH值为10,槽电压为10 V条件下,氨氮降解效率为91.89%。更多还原

【Abstract】 TiO₂-SiO₂-Activated carbon particle electrodes have been prepared by sol-gel method, and the activated carbon before and after loading Ti O2-SiO2 is characterized by SEM, XRD and N₂ adsorption-desorption. The instantaneous concentration of ·OH produced by the activated carbon particle electrode in the two-dimensional electrode method and three-dimensional electrode method have compared by UV-Vis. The three-dimensional electro-catalytic oxidation degradation experiment for target pollutant NH₃-N wastewater have been studied, and the effects of initial pH and cell voltage on the degradation efficiency of NH₃-N investigated. The results show that the NH₃-N degradation efficiency reaches 91.89% under the condition of initial pH value of 10 and cell voltage of 10V.更多还原