RuO2-IrO2-SnO2/Ti阳极电催化氧化苯酚的研究  

Electro-catalyticoxidation of phenol with RuO_2-IrO_2-SnO_2/Ti anode

作　　者：孙南南[1] 谢实涛 李凯[1] 陈英文[1] 沈树宝[1] 

机构地区：[1]南京工业大学生物与制药工程学院,江苏南京211816

出　　处：《环境污染与防治》2015年第2期38-41,共4页Environmental Pollution & Control

基　　金：国家自然科学青年基金资助项目(No.21106072);国家自然科学基金资助项目(No.51272105);国家科技支撑计划项目(No.2012BAE01B03-3);环保公益性行业科研专项(No.201309028)

摘　　要：以RuO2-IrO2-SnO2/Ti钛网电极为阳极,RuO2-IrO2/Ti钛网电极为阴极,构建了电催化氧化体系,同时以苯酚为底物、硫酸钠为电解质,考察了不同pH、极板间距、电流密度和苯酚初始浓度对苯酚去除率的影响。结果表明,在pH为6.5、极板间距为1.0cm、电流密度为50mA/cm2、苯酚初始质量浓度为1 000mg/L的最佳实验条件下,取硫酸钠质量浓度为20g/L的苯酚模拟废水250mL,120min时苯酚去除率可以达到98.4%。In this paper, the system of electro-catalytic oxidation was constructed. The anode and cathode were prepared by RuO2-IrO2-SnO2/Ti and RuO2-IrO2/Ti, respectively. The influence of pH, electrode interval, current density and phenol concentration with the substrate of phenol and supporting electrolyte of Na2 SO4 on phenol removal efficiency had been assessed. The electro-catalytic oxidation treatment in 20 g/L Na2SO4 at the pH of 6.5, electrode interval of 1.0 cm, phenol concentration of 1 000 mg/L and current density of 50 mA/cm2 , yielded the best conditions with phenol removal efficiency of 98.4% in 120 min.

关 键 词：电催化氧化 RuO2-IrO2-SnO2/Ti阳极苯酚pH电流密度 

分 类 号：X703[环境科学与工程—环境工程]