Citation: MAO Yan-Li, NIU Yun-Feng, WU Jun-Feng, KANG Hai-Yan, LI Dong, WANG Xiang-Wen. Selective Recognition of Ciprofloxacin from Aqueous Solution by Molecularly Imprinted Polymers Based on Magnetic Illite[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(6): 915-922. doi: 10.11895/j.issn.0253-3820.150820 shu

Selective Recognition of Ciprofloxacin from Aqueous Solution by Molecularly Imprinted Polymers Based on Magnetic Illite

1.
School of Municipal and Environmental Engineering, Henan University of Urban Construction, Pingdingshan 467036, China;
2.
School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, China

Received Date: 16 October 2015
Revised Date: 22 January 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21406090)

Figures(9)

The magnetic Illite (MILT) was firstly prepared by an effective polyol-medium solvothermal method. Based on these 3-(methacryloyloxy)propyl trimethoxysilane (MILT-MPS), magnetic molecularly imprinted polymers (MMIPs) were further synthesized via atom transfer radical polymerization in a mixture solution of methanol and deionized water. The as-prepared MMIIPs were characterized by FT-IR, TEM), XRD, TGA and vibrating sample magnetometer (VSM), and the results indicated that the MMIIPs exhibited magnetic sensitivity (M_s=3.866 emu/g), thermal stability and a larger specific surface area (109.58 m²/g). The batch mode adsorption studies were carried out to investigate the recognition specificity and selective capacity. The Langmuir isotherm model was fitted to the equilibrium data, and the monolayer adsorption capacity of MMIPs at 25℃ was 86.58 mg/g. The selective recognition experiments demonstrated high affinity and selectivity of MMIPs towards ciprofloxacin (CIP) over competitive compounds. Combined with high performance liquid chromatographic analysis technology, the prepared MMIIPs were successfully applied to extract and enrich trace CIP in environmental samples with the CIP recoveries from 93.4% to 98.3% and the limit of detection of 0.01 mg/L.
- Surface-initiated atom transfer radical,
- Magnetic molecularly imprinted particles,
- Ciprofloxacin,
- Specific adsorption
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沈阳化工大学材料科学与工程学院沈阳 110142