摘要
采用涂覆法制备CNT/TiO2复合电极。通过扫描电镜、接触角测试仪、X射线光电子能谱、循环伏安测试对复合电极的表面形貌、润湿性、元素成分及电化学性能进行了表征。结果表明,加入TiO2后的复合电极比表面孔隙、亲水性、比电容均得以增加;进一步研究表明,复合电极对苯酚的吸附量较CNT电极提高了32%;并且,CNT/TiO2复合电极电吸附苯酚过程符合准2级动力学方程,吸附等温线符合Langmuir等温吸附模型。
The CNT/TiO2 composite electrode was prepared by coating method. The surface morphology, wetting ability, surface elements and electrochemical performance of the composite electrode were characterized by scanning electron microscopy （SEM）, contact angle, X-ray photoelectron spectroscopy （XPS） and cyclic voltammetry, respectively. It was found that the pore ratio, hydrophilic property and specific capacity of the composite electrode increased after the addition of TiO2. Furthermore, phenol removal efficiency by the composite electrode was enhanced by 32% compared to that by CNT electrode. And the adsorption process followed the pseudo-second-order kinetic model and the equilibrium adsorption isotherm well fitted the Langmuir model.
出处
《水处理技术》
CAS
CSCD
北大核心
2015年第8期81-84,91,共5页
Technology of Water Treatment
基金
"十二五"国家科技支撑计划资助项目(2012BAJ24B03)
