Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (1): 110-117.DOI: 10.11944/j.issn.1000-0518.2015.01.140147

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Adsorption Properties of Carboxymethyl-β-cyclodextrin Functionalized Ferroferric Oxide Magnetic Nanocomposites on Rhodamine B

SUN Linlin, ZHOU Yehong, WANG Fei, SHUANG Shaomin, DONG Chuan*   

  1. Institute of Environmental Science, College of Environmental and Resource Sciences,Shanxi University,Taiyuan 030006,China
  • Received:2014-04-25 Revised:2014-06-24 Online:2015-01-06 Published:2015-01-06
  • Contact: Corresponding author:DONG Chuan, professor; Tel:0351-7010958; Fax:0351-7018613; E-mail:dc@sxu.edu.cn; Research interests:environmental analytical chemistry
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.21175086)

Abstract:

Carboxymethyl-β-cyclodextrin(CM-β-CD) synthesized by SN2 substitution was employed successfully on the modification of the surface of the Fe3O4 magnetic nanoparticles(MNPs) using a layer-by-layer method. The as-prepared CM-β-CD functionalized magnetic nanocomposites(CM-β-CD-MNPs) were characterized by transmission electron microscopy(TEM), Fourier transform infrared spectroscopy(FTIR) and vibrating sample magnetometer(VAM). The adsorption properties of CM-β-CD-MNPs on rhodamine B(RhB) were investigated. The results show that CM-β-CD-MNPs are nearly spherical, with an average particle diameter of 16 nm, and are superparamagnetic with a relatively high saturation magnetization value of 54 emu/g. Adsorption kinetic coincides with the pseudo-second-order kinetic model and the adsorption equilibrium is reached within 1 h. Adsorption isotherm fits well to Langmuir adsorption model and the maximum adsorption reaches up to 135.1 mg/g.

 

Key words: carboxymethy-β-cyclodextrin, ferroferric oxide, adsorption, rhodamine B

CLC Number: