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采用浸渍-煅烧法制备出SnO_2/石英柱粒子电极,用SEM,XRD,XPS等手段对其进行表征,并以四环素为目标污染物,构建了三维粒子电极体系进行电催化降解,研究粒子电极的电催化活性,优化粒子电极制备条件和电催化反应条件,煅烧温度550℃,煅烧时间5 h为粒子电极的最佳制备条件。在外加电压为15V,极板间距为6cm,粒子电极投加量为32g的条件下,反应120 min,四环素降解率可达到88.6%,比传统二维电极高25.3%,表明粒子电极有较好的电催化活性。
The SnO 2 / quartz column electrode was prepared by impregnation-calcination method. The electrode was characterized by SEM, XRD and XPS. Tetracycline was used as the target pollutant to construct the three-dimensional particle electrode system for electrocatalytic degradation. Electrocatalytic activity, the preparation conditions of the optimized particle electrode and the electrocatalytic reaction conditions, calcination temperature 550 ℃, calcination time 5h for the optimum preparation conditions of the particle electrode. Under the conditions of applied voltage of 15V, plate spacing of 6cm and particle electrode dosage of 32g, the degradation rate of tetracycline can reach 88.6% after 120 min reaction, which is 25.3% higher than the traditional two-dimensional electrode, indicating that the particle electrode is better Electrocatalytic activity.