Electrolysis removal of methyl orange dye from water by electrospun activated carbon fibers modified with carbon nanotubes

被引:42
|
作者
Sun, Yingying [1 ]
Wang, Gang [1 ]
Dong, Qiang [1 ]
Qian, Bingqing [1 ]
Meng, Yulan [1 ]
Qiu, Jieshan [1 ]
机构
[1] Dalian Univ Technol, Liaoning Key Lab Energy Mat & Chem Engn, State Key Lab Fine Chem, Carbon Res Lab, Dalian 116024, Peoples R China
基金
中国国家自然科学基金;
关键词
Carbon nanofiber; CNT; Electrospinning; Electrolysis; Dye; WASTE-WATER; ELECTROCHEMICAL DEGRADATION; OXIDATIVE-DEGRADATION; TEXTILE EFFLUENTS; AQUEOUS-SOLUTION; P-NITROPHENOL; AZO-DYE; CATALYST; REACTOR; ACID;
D O I
10.1016/j.cej.2014.05.017
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The electrochemical degradation of methyl orange (MO) dye over the electrospun activated carbon fiber (ACF) webs modified with carbon nanotubes (CNTs) (e-CNT/ACF) has been studied. The CNTs in the web-like e-CNT/ACF composites help to improve the pore distribution and conductivity of the concerned composites. With e-CNT/ACF webs as electrodes, about 90% of the MO can be degraded in 60 min, which is much higher than the commercial woven ACF under the similar conditions. The effects of the electrolysis potential, pH and electrolyte concentration on the MO degradation have been addressed in detail. The results show that the MO degradation efficiency over the e-CNT/ACF webs is related linearly to the potential and the electrolyte concentration, while for the pH, it goes through an optimum value of 3.0. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:73 / 77
页数:5
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