摘要
基于石墨烯修饰电极,分别建立了对苯二酚(HQ)和邻苯二酚(CC)浓度与电化学信号的工作曲线,并通过差分脉冲伏安法(DPV)考察了Fe2+与H2O2添加量、pH环境及降解时间对HQ、CC降解率影响。结果表明:Fe2+/H2O2芬顿体系对HQ、CC的降解效果明显,其中羟基自由基起主导作用。处理50 mL 6×10^-5 mol·L^-1的苯二酚污染物时,Fe2+与H2O2摩尔比为5∶4,芬顿试剂添加量为9.8×10^-5 mol,降解时间为45 min,分别在pH=4.0的条件下降解HQ和pH=5.0的条件下降解CC,降解率分别达88.8%(HQ)和96.1%(CC)。
The working curves of hydroquinone(HQ)and catechol(CC)concentrations and electrochemical signals were established,based on the graphene modified electrode.And the effects of Fe2+and H2O2 add amount,pH environment and degradation time on the degradation rate of HQ and CC were investigated by differential pulse voltammetry(DPV).The result showed that the Fe2+/H2O2 Fenton system had obvious degradation effects on HQ and CC,and hydroxyl radicals played a leading role.When treating 50 mL of 6×10^-5 mol·L^-1 benzenediol contaminant,the molar ratio of Fe2+to H2O2 was about 5∶4,the addition amount of Fenton reagent was 9.8×10^-5 mol,and the degradation time was 45 min.Degradation of CC under conditions of pH=4.0 degradation of HQ and pH=5.0,the degradation rates were 88.8%(HQ)and 96.1%(CC),respectively.
作者
秦洪伟
王鑫
闫彬
连爽
赵文鹏
尤国红
QIN Hong-wei;WANG Xin;YAN Bin;LIAN Shuang;ZHAO Wen-peng;YOU Guo-hong(College of Chemistry and Chemical Engineering,Bohai University,Jinzhou 121013,China;College of Engineering,Bohai University,Jinzhou 121013,China)
出处
《化学研究与应用》
CAS
CSCD
北大核心
2019年第11期1958-1964,共7页
Chemical Research and Application
基金
国家自然科学基金项目(41602351)资助
2019年度辽宁省自然科学基金指导计划项目(2019-ZD-0504)资助
关键词
芬顿体系
邻苯二酚
对苯二酚
电化学
降解
Fenton system
catechol
hydroquinone
electrochemistry
degradation
