Removal of methylene blue from aqueous solution with self-assembled cylindrical graphene-carbon nanotube hybrid

被引：287
作者：
Ai, Lunhong [1 ]
Jiang, Jing [1 ]
机构：
[1] China W Normal Univ, Coll Chem & Chem Engn, Chem Synth & Pollut Control Key Lab Sichuan Prov, Nanchong 637002, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2012年 / 192卷
基金：
中国国家自然科学基金;
关键词：
Graphene; Multi-walled carbon nanotubes; Hybrid; Adsorption; Methylene blue; ADSORPTION; DYE; SORPTION; OXIDE; HYDROGELS; KINETICS; WATER; DECOLORIZATION; EQUILIBRIUM; DEGRADATION;
D O I：
10.1016/j.cej.2012.03.056
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, we report the efficient removal of organic dye from aqueous solution with a self-assembled cylindrical graphene-carbon nanotube (G-CNT) hybrid which can be directly fabricated by a simple one-step hydrothermal process. The hybrid showed good performance for the removal of methylene blue (MB) from aqueous solution with a maximum adsorption capacity of 81.97 mg g(-1). The removal efficiency was found to be 97% at the initial MB concentration of 10 mg L-1. The kinetics of adsorption followed the pseudo-second-order kinetic model, while the Freundlich adsorption isotherm was applicable to describe the equilibrium adsorption process. This study suggests that carbon-based hybrid could be explored as a new adsorbent for removing organic dye pollutants from aqueous solution. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：156 / 163
页数：8
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