NanoTiO_2-聚苯胺复合膜电极电化学降解2,4,6-三硝基苯酚  

Electrochemical Degradation of 2,4,6-Tri-nitrophenol Using Electrodes of Ti/nanoTiO_2-PAn

作　　者：胡云虎[1] 王凤武[1] 徐迈[1] 方文彦[1] 魏亦军[1] 朱传高[1] 

机构地区：[1]淮南师范学院化学与化工系,淮南232001

出　　处：《应用化学》2012年第7期814-818,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(21176099)资助项目;安徽省高校自然科学基金(KJ2010B198)资助项目;安徽省高校优秀青年基金研究项目(2011SQRL138)

摘　　要：利用溶胶-凝胶法和电化学聚合制得Ti/nanoTiO2-聚苯胺(PAn)复合膜电极,用X射线衍射仪、扫描电子显微镜及循环伏安法对电极的结构、表面形貌和电催化性能进行了表征。SEM测试表明,Ti/nanoTiO2-PAn电极上聚合的苯胺呈短纤维形貌,短纤维的直径较为均匀,为150 nm左右。以此电极进行电化学降解2,4,6-三硝基苯酚,在25℃,电解时间为180 min,电极间距离为2 cm,废水pH值在7～8之间,浓度为50 mg/L的2,4,6-三硝基苯酚模拟废水中COD,降解效率可达到41.2%。Polymerization of aniline on nanoTiO2 complex film electrode was achieved by sol-gel method and electrochemical polymerization technique. XRD, SEM and CV were used to characterize the structure and image of the nanoTiO2-PAn complex film. Loose short fiber and porous structure could be observed by SEM. The average particle size of crystal grains was 150 nm. The COD removal efficiency reached 41.2% for an artificial wastewater containing 50 mg/L 2,4,6-tri-nitrophenol under the conditions of 2 cm distance between the electrodes, pH = 7 -8 and 25℃.

关 键 词：电化学降解 聚合 三硝基苯酚 Ti/nanoTiO2-PAn 

分 类 号：O643.3[理学—物理化学]