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

页码：156 / 163

页数：8

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