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Reference type: Journal
Authors: Zhang HB, Zhang ZH, Nie Y, Hu YF, Zou HY, Yao SZ
Article Title: Preparation and Application of Chlorogenic Acid Imprinted Solid Phase Extraction Materials Based on Multiwalled Carbon Nanotubes.
Publication date: 2009
Journal: Chinese Journal of Analytical Chemistry
Volume: 37
Issue: (7)
Page numbers: 955-959.
Alternative URL: http://en.cnki.com.cn/Article_en/CJFDTotal-FXHX200907007.htm

Abstract: A novel molecularly imprinted polymers (MIPs) was prepared based on multiwalled carbon nanotubes (MWNTs) by us using chlorogenic acid as template, methacrylic acid (MAA) as the functional monomer and ethylene glycol dimethacrylate (EGDMA) as the cross-linker. Infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis were employed to characterize the composite structure and morphology, the results showed that a stable imprinted layer was grafted on the MWNTs with the average thickness of 30-40 nm. The dynamic absorption and static adsorption experiments were also executed and the results showed that two kinds binding sites with the maximum apparent binding constant 21.5 μmol/g and 32.7 μmol/g existed v. i. between the imprinted polymers and chlorogenic acid. As solid phase extraction (SPE) materials, the separation and enrichment of chlorogenic acid from honeysuckle were successful with a enrichment factor of 25
Template and target information: chlorogenic acid
Author keywords: Multiwalled carbon nanotubes, molecularly imprinted, chlorogenic acid, separation


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