Ti/TiO_2纳米管阵列/PbO_2-Pr电极制备及在电氧化有机废水中应用  

Preparation of Ti/TiO_2 Nanotube Arrays/PbO_2-Pr Electrode and Its Application in Electrocatalytic Degradation of Organic Wastewater

作　　者：毛雨路 张西 徐迈[2] 王凤武[2] 王智成 方文彦[2] 魏亦军[2] 朱传高[2] MAO Yulu a;ZHANG Xi b;XU Mai b;WANG Fengwu b;WANG Zhichenga;FANG Wenyanb;WEI Yijunb;ZHU Chuangaob(aSchool of Chemical Engineering,Anhui University of Science and Technology, Huainan,Anhui 232001, China;bSchool of Chemistry and Chemical Engineering, Huainan Normal University, Huainan ,Anhui 232038, China)

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001 [2]淮南师范学院材料与化学工程学院,安徽淮南232038

出　　处：《应用化学》2018年第5期582-588,共7页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金项目(21176099);安徽省高校自然科学研究重大项目(KJ2017ZD37;KJ2016A670)资助~~

摘　　要：以二氧化钛纳米管阵列(TiO_2NTs)为基体,利用脉冲电沉积的方法将Pr掺杂的PbO_2修饰到TiO_2NTs管中,制备出新型电极材料Ti/TiO_2NTs/nanoPbO_2-Pr用来降解有机废水。通过循环伏安测试(CV)和线性伏安法(LSV)等手段对电极性能进行评估,研究表明,新型电极材料Ti/TiO_2NTs/nanoPbO_2-Pr具有高的电催化活性。利用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、X射线光电子能谱(XPS)等对其进行表面形貌、晶形结构和元素组成进行研究。结果表明,通过脉冲电沉积成功将Pr-PbO_2沉积到TiO_2纳米管中,其中元素Pr是以Pr_2O_3形式存在。亚甲基蓝降解实验证明,Ti/TiO_2NTs/nanoPbO_2-Pr电极降解120min后亚甲基蓝的去除率高达99.8%。A novel Ti/TiO_2nanotube arrays（NTs）/PbO2-Pr electrode for the degradation of organic wastewater was fabricated by the pulse electrodeposition method.Pr-doped PbO2nanoparticles were deposited on the TiO2nanotube array substrate.Cyclic voltammetry（CV）and linear sweep voltammetry（LSV）were utilized to study the electrochemical performance of electrodes.The results demonstrate that Ti/TiO2NTs/nano PbO2-Pr electrodes（P）possess excellent electrocatalytic properties.The morphology,crystallinity and elemental composition of Ti/TiO2NTs/nano PbO2-Pr electrodes were characterized by scanning electron microscopy（SEM）,X-ray diffraction（XRD）,X-ray photoelectron spectroscopy（XPS）.Theβ-PbO2nanoparticles are dispersed inside the TiO2nanotubes and the doped Pr exists in the form of Pr2O3.The degradation of methylene blue was carried out to test electrocatalytic performance of this novel electrode.A99.8%removal of methylene blue of Ti/TiO2NTs/nano PbO2-Pr electrode within 120 min indicates its good activity.

关 键 词：二氧化钛纳米管阵列 脉冲电沉积 二氧化铅电极 电氧化 

分 类 号：O643[理学—物理化学]