Selective Recognition of Ciprofloxacin from Aqueous Solution by Molecularly Imprinted Polymers Based on Magnetic Illite
10.11895/j.issn.0253-3820.150820
- VernacularTitle:磁性伊利石表面分子印迹材料的制备及其对环丙沙星识别特性研究
- Author:
Yanli MAO
;
Yunfeng NIU
;
Junfeng WU
;
Haiyan KANG
;
Dong LI
;
Xiangwen WANG
- Publication Type:Journal Article
- Keywords:
Surface-initiated atom transfer radical;
Magnetic molecularly imprinted particles;
Ciprofloxacin;
Specific adsorption
- From:
Chinese Journal of Analytical Chemistry
2016;44(6):915-922
- CountryChina
- Language:Chinese
-
Abstract:
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 ( Ms =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.
