Cite this paper:
CHEN Xing, YANG Zhao-Xia, ZHANG Zhao-Hui, RAO Wei, LIU Yu-Nan, CHEN Hong-Jun, HU Xiao-Yun, CAI Rong, NIE Li-Hua. Synthesis and Application of Novel Magnetic Lead (Ⅱ) Ion Imprinted Polymers Based on Multiwalled Carbon Nanotubes[J]. Chinese Journal of Analytical Chemistry, 2013, 41(9): 1406-1412

Synthesis and Application of Novel Magnetic Lead (Ⅱ) Ion Imprinted Polymers Based on Multiwalled Carbon Nanotubes
CHEN Xing1,2, YANG Zhao-Xia2, ZHANG Zhao-Hui1,2,3, RAO Wei2, LIU Yu-Nan2, CHEN Hong-Jun2, HU Xiao-Yun2, CAI Rong2, NIE Li-Hua3
1 Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie 427000, China;
2 College of Chemistry and Chemical Engineering, Jishou 416000, China;
3 State Key Laboratory of Chemo/Biosensing and Chemometrics, Changsha 410082, China
Novel magnetic ion imprinted polymers based on vinyl-functionlized multiwalled carbon nanotubes (MWNTs@MIIPs) with highly selective adsorption toward Pb2+ were synthesized using Pb2+ 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, Fourier-transform infrared analysis and vibrating sample magnetometer analysis. Adsorption studies demonstrated that the MWNTs@MIIPs possessed excellent adsorption and selective recognition ability towards Pb2+ with a maximum capacity of 25.9 mg/g. And the selectivity factor of MWNTs@MIIPs towards Pb2+/Cu2+, Pb2+/Zn2+ Pb2+/Co2+, Pb2+/Mg2+, Pb2+/Cd2+and Pb2+/Ni2+ was 2.3, 2.5, 2.1, 2.2, 2.1 and 2.4, respectively. Combined with atomic absorption spectrometric analysis technology, the MWNTs@MIIPs were successfully applied for separation and enrichment trace Pb2+ in environmental real samples with the enrichment factor of 40.5.
Key words:    Ion imprinted    Magnetic    Multiwalled carbon nanotubes    Lead ion   
Received: 2013-01-29     Revised: 2013-03-04
DOI: 10.3724/SP.J.1096.2013.30116
Corresponding author:
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