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Citation: HUANG Shuibo, ZHANG Zhaohui, ZHOU Biwu, ZHAO Chengfeng. Synthesis of Novel Magnetic Cadmium (Ⅱ) Ion Imprinted Polymers Based on Carbon Nanotubes for Enrichment of Cadmium Ion in Rice[J]. Chinese Journal of Applied Chemistry, ;2015, 32(11): 1299-1306. doi: 10.11944/j.issn.1000-0518.2015.11.150154 shu

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

1.
College of Chemistry and Chemical Engineering, Jishou, Hu'nan 416000, China

Corresponding author: ZHANG Zhaohui,
Received Date: 28 April 2015
Available Online: 12 June 2015
Fund Project: 国家自然科学基金(21267010) (21267010)湖南省大学生创新性实验项目(湘教通[2013]191号) (湘教通[2013]191号)

A novel magnetic ion imprinted polymers(MWNTs/MIIPs) based on aniline functionalized multiwalled 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.
- ion imprinted,
- magnetic,
- carbon nanotubes,
- cadmium ion
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