Characterization of magnetic soluble starch-functionalized carbon nanotubes and its application for the adsorption of the dyes

被引：161

作者：

Chang, Peter R. ^{[2
]}

Zheng, Pengwu ^{[3
]}

Liu, Baoxiang ^{[1
]}

Anderson, Debbie P. ^{[2
]}

Yu, Jiugao ^{[1
]}

Ma, Xiaofei ^{[1
]}

机构：

[1] Tianjin Univ, Dept Chem, Sch Sci, Tianjin 300072, Peoples R China

[2] Agr & Agri Food Canada, Bioprod & Bioproc Natl Sci Program, Saskatoon, SK S7N 0X2, Canada

[3] Jiangxi Sci & Technol Normal Univ, Sch Pharm, Nanchang 330013, Jiangxi, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 186卷 / 2-3期

关键词：

Dye; Soluble starch; Multiwall carbon nanotube; Magnetic separation; Adsorption; COMPOSITE; NANOCOMPOSITE; NANOFIBERS;

D O I：

10.1016/j.jhazmat.2010.12.119

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Soluble starch-functionalized multiwall carbon nanotube composites (MWCNT-starch) were prepared to improve the hydrophilicity and biocompatibility of MWCNTs. Characterization of the MWCNT-starch by Fourier transform infrared (FTIR) spectroscopy, ultraviolet-visible (UV-vis) spectroscopy, X-ray diffraction (XRD), transmission electron microscope (TEM) and thermogravimetric analysis (TG), showed that the starch component (about 14.3 wt%) was covalently grafted onto the surface of MWCNT. MWCNT-starch-iron oxide composites, intended for use as adsorbents for the removal of dyes from aqueous solutions, were prepared by synthesizing iron oxide nanoparticles at the surface of MWCNT-starch. Starch acts as a template for growth of iron oxide nanoparticles which are uniformly dispersed on the surface of the MWCNT-starch. MWCNT-starch-iron oxide exhibits superparamagnetic properties with a saturation magnetization (23.15 emu/g) and better adsorption for anionic methyl orange (MO) and cationic methylene blue (MB) dyes than MWCNT-iron oxide. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2144 / 2150

页数：7

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