CAJ | 학술논문

利用电感耦合空气等离子体对涂覆法制备的 CNT/TiO2复合电极进行射频放电改性处理.复合电极的表面形貌、润湿性及元素成分分别通过扫描电镜(SEM)、接触角测试仪、x 射线光电子能谱(XPS)进行了表征.结果表明,改性后有利于苯酚吸附,电极比表面孔隙、亲水性、TiO2及含氧官能团均得以增加;循环伏安测试(CV)表明改性后电极比电容提高 54%;改性后复合电极对苯酚的吸附量较改性前提高了45%.且等离子改性CNT/TiO2电极对苯酚的去除量随电压、苯酚初始浓度的增加而增加,吸附过程符合准二级动力学方程,吸附等温线符合Langmuir等温吸附模型.
이용전감우합공기등리자체대도복법제비적 CNT/TiO2복합전겁진행사빈방전개성처리.복합전겁적표면형모、윤습성급원소성분분별통과소묘전경(SEM)、접촉각측시의、x 사선광전자능보(XPS)진행료표정.결과표명,개성후유리우분분흡부,전겁비표면공극、친수성、TiO2급함양관능단균득이증가;순배복안측시(CV)표명개성후전겁비전용제고 54%;개성후복합전겁대분분적흡부량교개성전제고료45%.차등리자개성CNT/TiO2전겁대분분적거제량수전압、분분초시농도적증가이증가,흡부과정부합준이급동역학방정,흡부등온선부합Langmuir등온흡부모형.
The CNT/TiO2composite electrode prepared by coating method was activated with radio frequency inductively coupled air-plasma. The surface morphology, wetting ability and surface elements of the plasma activated electrode were characterized by scanning electron microscopy (SEM), contact angle and X-ray photoelectron spectroscopy (XPS), respectively. It was found that the pore ratio, hydrophilic property, contents of TiO2 and oxygen containing groups on the surface of the electrode increased after the activation, which facilitated the adsorption of phenol. Cyclic voltammetry (CV) result indicated that its specific capacity also increased by 54% with the plasma treatment. Further, phenol removal efficiency for the activated electrode was enhanced by 45% compared to that of the raw electrode, and the removal of phenol increased as the increase of applied voltage and initial concentration. The adsorption process followed the pseudo-second-order kinetic model and the equilibrium adsorption isotherm well fitted the Langmuir model.