Reduction of hexavalent chromium by polypyrrole-modified steel mesh electrode

被引：22
|
作者：
Tian, Ying
Yang, Fenglin [1 ]
机构：
[1] Dalian Univ Technol, Sch Environm & Biol Sci & Technol, Dalian, Peoples R China
[2] Jiao Tong Univ, Sch Environm Sci & Engn, Dalian, Peoples R China
来源：
JOURNAL OF CLEANER PRODUCTION | 2007年 / 15卷 / 15期
关键词：
polypyrrole; stainless steel mesh; reduction; Cr(VI);
D O I：
10.1016/j.jclepro.2006.04.001
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Adherent polypyrrole (ppy) films were electropolymerized from a para-toluenesulfonic sodium (PTS) solution on stainless steel mesh (SSM). Reduced ppy-modified SSM electrode can transfer Cr(VI) to Cr(III) effectively. Lower pH (< 2) or higher temperature (> 35 degrees C) is beneficial for the removal of Cr(VI). Electro-reduction achieved 90% removal efficiency after 21 min by cyclic voltammetry. The removal efficiency is 96-56% for one-six contact cycles between ppy and Cr(VI). SEM shows that ppy films on SSM have regular morphology with small nucleus of less than 1 mu m in diameter. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1415 / 1418
页数：4
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