Removal of cationic dyes from aqueous solution using magnetic multi-wall carbon nanotube nanocomposite as adsorbent

被引：909

作者：

Gong, Ji-Lai ^{[1
]}

Wang, Bin ^{[1
]}

Zeng, Guang-Ming ^{[1
]}

Yang, Chun-Ping ^{[1
]}

Niu, Cheng-Gang ^{[1
]}

Niu, Qiu-Ya ^{[1
]}

Zhou, Wen-Jin ^{[1
]}

Liang, Yi ^{[2
]}

机构：

[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China

[2] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 164卷 / 2-3期

基金：

中国国家自然科学基金;

关键词：

Dye; Multi-wall carbon nanotube; Magnetic separation; Adsorption; ADSORPTION; WATER; OXIDATION; KINETICS; NANOPARTICLES; EQUILIBRIUM; WASTEWATERS; EXTRACTANT; PARTICLES; CHITOSAN;

D O I：

10.1016/j.jhazmat.2008.09.072

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A magnetic multi-wall carbon nanotube (MMWCNT) nanocomposite was synthesized and was used as an adsorbent for removal of cationic dyes from aqueous solutions. The MMWCNT nanocomposite was composed of commercial multi-wall carbon nanotubes and iron oxide nanoparticles. The properties of this magnetic adsorbent were characterized by scanning electron microscopy, X-ray diffraction and BET surface area measurements. Adsorption characteristics of the MMWCNT nanocomposite adsorbent were examined using methylene blue. neutral red and brilliant cresyl blue as adsorbates. Experiments were carried out to investigate adsorption kinetics, adsorption capacity of the adsorbent and the effect of adsorption dosage and solution pH values on the removal of cationic dyes. Kinetic data were well fitted by a pseudo second-order model. Freundlich model was used to study the adsorption isotherms. The prepared MMWCNT adsorbent displayed the main advantage of separation convenience compared to the present adsorption treatment. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1517 / 1522

页数：6

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