In掺杂SnO_2/Ti阳极电催化氧化4-硝基苯酚研究

Study on electro-catalytic oxidation of paranitrophenol by In-doped SnO_2/Ti process

采用凝胶—溶胶法制备了In掺杂SnO2/Ti电极.采用In掺杂SnO2/Ti电极为阳极,Ti为阴极电解4-硝基苯酚,实验了电流密度、电极间距离和废水pH值等对4-硝基苯酚电解去除效果的影响,确定了最佳处理条件.在电流密度为20 mA/cm2,电极间距离为2 cm,废水pH为1以及电解时间为5 h的处理条件下,4-硝基苯酚的电解处理去处率可达到96.2%.并利用HPLC对4-硝基苯酚降解过程中的产物进行了初步分析.

The In-doped SnO2/Ti poles were prepared by sol-gel process.In-doped SnO2/Ti poles were used as anode,Ti was used as cathode to degrade paranitrophenol.Factors affecting the removal rate were investigated,such as voltaic density,interelectrode distance,pH ect.Under the optimal conditions of voltaic density 20 mA/cm^2,I nterelectrode distance 2 cm,pH 1 and electrolysis time 5 h,the removal rate of paranitrophenol was 96.2%.And the middle outcome of the treatment was studied with HPLC annlysis method.