Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (11): 1299-1306.DOI: 10.11944/j.issn.1000-0518.2015.11.150154

• Full Papers • Previous Articles     Next Articles

Synthesis of Novel Magnetic Cadmium(Ⅱ) Ion Imprinted Polymers Based on Carbon Nanotubes for Enrichment of Cadmium Ion in Rice

HUANG Shuibo,ZHANG Zhaohui(),ZHOU Biwu,ZHAO Chengfeng   

  1. College of Chemistry and Chemical Engineering,Jishou,Hu'nan 416000,China
  • Received:2015-04-28 Accepted:2015-06-16 Online:2015-11-02 Published:2015-11-02
  • Contact: ZHANG Zhaohui
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21267010), Hu'nan College Students Innovative Experimental Program([2013]191), Science and Technology Innovative Research Team in Higher Educational Instituions of Hu'nan Province

Abstract:

A novel magnetic ion imprinted polymers(MWNTs/MIIPs) based on aniline functionalized multi-walled carbon nanotubes was synthesized using Cd2+ as the template, methacrylic acid as the functional monomer and ethylene glycol dimethacrylate as the cross-linker. The MWNTs/MIIPs were characterized by scanning electron microscopy and infrared spectroscopy in detail. Adsorption studies indicate that the MWNTs/MIIPs show excellent adsorption and selective recognition ability towards Cd2+ with a maximum adsorption capacity of 16.96 mg/g. And the selectivity factor of the MWNTs/MIIPs toward Cd2+/Cu2+, Cd2+/Ni2+, Cd2+/Pb2+and Cd2+/Cr3+ is 2.03, 2.35, 2.16 and 2.13, respectively. Combined with atomic absorption spectral analysis technology, the MWNTs/MIIPs were applied for the rapid separation and enrichment of trace Cd2+ in rice.

Key words: ion imprinted, magnetic, carbon nanotubes, cadmium ion