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《Chemistry》 2012-01
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Preparation and Adsorption Performance of Emodin Imprinted Material Based on Multi-wall Carbon Nanotubes

Liu Xi1,2,Zhang Huabin2,Leng Xiang2,Yang Xiao2,Zhang Zhaohui1,2,3,Nie Lihua3(1Key Laboratory of Hunan Forest Products and Chemical Industry Engineering,Jishou University,Zhangjiajie 427000;2College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000;3State Key Laboratory of Chemo/Biosensing and Chemometrics,Hunan University,Changsha 410082)  
A novel emodin(EM) imprinting material based on carbon nanotubes modified with silica gel(MWNT-MIPs) was successfully synthesized by using methacrylic acid(MAA) as a functional monomer and ethylene glycol dimethacrylate(EGDMA) as a crosslinker.The MWNT-MIPs were characterized by SEM and TEM.The results showed that a stable,uniform,about 40 nm thick imprinted materials layer was grafted on the surface of MWNT.At pH=8.5,the maximum adsorption with theoretical maximum adsorption capacity(Qmax) of 20.8 mg/g and good selective adsorption of emodin were obtained.As solid-phase extraction materials,under washing with 85% ethanol and eluting with the solution of 10% acetic acid in ethanol,the recovery of EM was over 85%,achieving efficient separation and enrichment of emodin from actinidia chinensis planch root.
【Key Words】: Imprinting Carbon nanotubes Emodin Solid phase extraction
【Fund】: 国家自然科学基金项目(21005030);; 湖南省教育厅重点项目(10A099);; 林产化工工程湖南省重点实验室开放基金;; 湖南省大学生创新基金(JSU-CX-2010-46)资助
【CateGory Index】: TB383.1
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【Citations】
Chinese Journal Full-text Database 5 Hits
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