Magnetite decorated multi-walled carbon nanotubes for removal of toxic dyes from aqueous solutions

被引：48
|
作者：
Kerkez, Ozge [1 ]
Bayazit, Sahika Sena [1 ]
机构：
[1] Beykent Univ, Fac Engn & Architecture, Dept Chem Engn, Istanbul, Turkey
来源：
JOURNAL OF NANOPARTICLE RESEARCH | 2014年 / 16卷 / 06期
关键词：
Magnetic separation; Carbon nanotubes; Dye adsorption; Health and environmental effects; Remediation; ACTIVATED CARBON; MALACHITE GREEN; METHYLENE-BLUE; PHOTOCATALYTIC DEGRADATION; COMPETITIVE ADSORPTION; ORGANIC-DYES; RHODAMINE-B; KINETICS; ORANGE; EQUILIBRIUM;
D O I：
10.1007/s11051-014-2431-1
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The removal of malachite green (MG) and rhodamine B (RB) from aqueous solutions was studied by batch adsorption technique using Fe3O4/MWCNT. Fe3O4/MWCNT adsorbent was synthesized by co-precipitation method and characterized by XRD, SEM, and TGA. 94 % MG removal and 98 % RB removal were achieved in 80 min using 10 mg adsorbent, at pH 6 and 298 K. The effects of adsorbent amount, pH, initial dye concentration, contact time, and temperature were investigated. Equilibrium data were well fitted by Langmuir adsorption model and pseudo-second-order kinetic model. MG adsorption on Fe3O4/MWCNT is exothermic and RB adsorption is endothermic in nature.
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页数：11
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