Zn2+离子印迹Fe3O4-壳聚糖纳米粒子的制备及对Zn2+吸附性能的研究

陈志军; 郝营; 杨清香; 张翔; 齐连怀; 汤凯; 朱海燕; 王丹

doi:10.3969/j.issn.2095-476X.2014.01.015

January 2014

Article Contents

CHEN Zhi-jun, HAO Ying, YANG Qing-xiang, et al. Preparation of Zn2+ ions imprinted Fe3O4-CTS nanoparticles and the research in Zn2+ adsorption properties[J]. Journal of Light Industry, 2014, 29(1): 74-78. doi: 10.3969/j.issn.2095-476X.2014.01.015

Citation: CHEN Zhi-jun, HAO Ying, YANG Qing-xiang, et al. Preparation of Zn2+ ions imprinted Fe3O4-CTS nanoparticles and the research in Zn2+ adsorption properties[J]. Journal of Light Industry, 2014, 29(1): 74-78. doi: 10.3969/j.issn.2095-476X.2014.01.015 shu

Preparation of Zn²⁺ ions imprinted Fe₃O₄-CTS nanoparticles and the research in Zn²⁺ adsorption properties

College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China

Received Date: 2013-09-02

Abstract

Fe₃O₄-chitosan (CTS) imprinted nanoparticles were prepared by one-step coprecipitation using Zn²⁺ as template and glutaraldehyde as a crosslinking agent.The nanoparticles were characterized by X-ray diffraction (XRD),Fourier transform infrared spectroscopy (FTIR) and thermo gravimetric analysis (TG) respectively.The effect of pH,initial concentration of Zn²⁺ and temperature on adsorption of Zn²⁺ was also studied by atom adsorption spectroscopy (AAS) and finally the adsorption of various heavy metal ions was discussed.The results showed that the nanaoparticles were successfully covered with chitosan,and their original spinel structure hadn't changed.The amount of chitosan was about 10.2%(wt).The suitable pH was 6.When the initial concentration of Zn²⁺ was 200 mg/L,the adsorption capacity reached its maximum value which was about 28.9 mg/g.Decreasing temperature benefited the adsorption process and the nanoparticles showed selective adsorption of zinc ions.
- Zn²⁺,
- Fe₃O₄,
- chitosan,
- imprinted nanoparticles,
- selective adsorption
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