应用化学

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NanoTiO2-聚苯胺复合膜电极电化学降解2,4,6-三硝基苯酚

胡云虎*,王凤武,徐迈,方文彦,魏亦军,朱传高   

  1. (淮南师范学院化学与化工系 淮南 232001)
  • 收稿日期:2011-08-15 修回日期:2011-09-26 出版日期:2012-07-10 发布日期:2012-07-10
  • 通讯作者: 胡云虎,讲师; Tel:0554-6672637; Fax:0554-6672651; E-mail:lunwentougao2000@163.com; 研究方向:电化学研究
  • 基金资助:
    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)

Electrochemical Degradation of 2,4,6-Tri-nitrophenol Using Electrodes of Ti/nanoTiO2-PAn

HU Yunhu*, WANG Fengwu, XU Mai, FANG Wenyan, WEI Yijun, ZHU Chuangao   

  1. (Department of Chemistry and Chemical Engineering,Huainan Normal University,Huainan 232001,China)
  • Received:2011-08-15 Revised:2011-09-26 Published:2012-07-10 Online:2012-07-10

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%。

关键词: 电化学降解, 聚合, 三硝基苯酚, Ti/nanoTiO2-Pan

Abstract: 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 ℃.

Key words: electrochemical degradation, Polymerization, tre-nitrophenol, Ti/nanoTiO2-Pan

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