摘要
采用热分解法制备了钛基SnO2(Ti/SnO2)电极和TiO2改性钛基SnO2(Ti/SnO2-TiO2)电极。利用扫描电子显微镜(SEM)和X射线衍射(XRD)仪,极化曲线和循环伏安测试等方法对改性前后的电极进行表征,并考察电极的电催化氧化能力。结果表明,Ti/SnO2-TiO2电极膜层中存在锐钛矿型TiO2粒子,引入的TiO2使Ti/SnO2-TiO2电极具有比Ti/SnO2电极更粗糙的表面和更大的比表面积,且使电极的析氧过电位由1.7V提高至2.0V。循环伏安测试结果和电催化氧化4-氯苯酚(4-CP)过程均表明,Ti/SnO2-TiO2电极具有比Ti/SnO2电极更高的电催化氧化能力。
Ti based SnO2 electrode （Ti/SnO2） and Ti based SnO2 electrode modified with TiO2 （Ti/SnO2- TiO2） were prepared by thermal decomposition method. Scanning electron microscope （SEM）, X-ray diffraction （XRD）, polari2ation curve and cyclic voltammetry method were used to characteri2e Ti/SnO2 and Ti/SnO2-TiO2 elec- trodes. Furthermore, the electro-catalytic oxidation performance of two electrodes was measured. The results showed that anatase TiO2 existed in the film of Ti/SnO2-TiO2 electrode. Ti/SnO2-TiO2 electrode had more coarse surface and higher surface area than Ti/SnO2 electrode. Furthermore, the oxygen over potential of Ti/SnO2 electrode was in- creased from 1.7 to 2.0 V. In addition, the results of cyclic Voltammetry and electro-catalytic oxidation of 4-chloro- phenol （4-CP） showed that Ti/SnO2-TiO2 electrode had higher electro-catalytic oxidation performance than Ti/SnO2 electrode.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2014年第2期43-46,51,共5页
Environmental Pollution & Control
