Fe3O4-PTFE电极制备条件和双阴极电-Fenton反应条件的优化

制备了Fe₃O₄-聚四氟乙烯（PTFE）电极,优化了原料配比和焙烧温度。对比了Fe₃O₄-PTFE单阴极和Fe₃O₄-PTFE与乙炔碳黑-PTFE电极并联双阴极体系对模拟Rhb染料废水的处理效果。实验结果表明：在m（Fe₃O₄）∶m（PTFE）=3.0∶2.5、焙烧温度为300 ℃的条件下制备Fe₃O₄-PTFE电极,采用阴极电-Fenton法降解模拟Rhb废水的效果最佳,电解反应120 min时Rhb降解率达86.91%;Fe₃O₄-PTFE电极与乙炔碳黑-PTFE电极并联作为双阴极电解Rhb废水时,最佳电压为6 V,最佳初始废水pH为3,在此条件下电解反应120 min时Rhb降解率达91.65%。

Optimization of the Fe3O4-PTFE electrode preparation conditions and electro-Fenton reaction conditions of double-cathode system

The Fe₃O₄-polytetrafluoroethylene（PTFE）electrode was prepared,and the ratio of its raw materials and the roasting temperature were optimized. Then,the degradation effects of Fe₃O₄-PTFE single cathode and Fe₃O₄-PTFE electrode/acetylene carbon black-PTFE electrode parallel double-cathode system on simulated Rhb dye wastewater were compared. The experimental results showed that Fe₃O₄-PTFE electrode prepared under the conditions of m（Fe₃O₄）∶m（PTFE）=3.0∶2.5 and the calcination temperature of 300℃ was the best for the degradation of simulated Rhb wastewater. The degradation rate of Rhb reached 86.91% when the electrolysis reaction proceeded for 120 min. When the voltage was 6 V and the pH of the wastewater was 3,the Fe₃O₄-PTFE electrode/acetylene carbon black -PTFE electrode parallel double-cathode system electrolytic Rhb wastewater was best. The degradation rate of Rhb reached 91.65% when the electrolysis reaction proceeded 120 min under this condition.