化工学报2016，Vol.67Issue(10)：4273-4281,9.DOI:10.11949/j.issn.0438-1157.20160196
磁性粉煤灰空心微珠表面印迹聚合物选择性识别头孢氨苄
Selective recognition of cefalexin by magnetic molecularly imprinted polymers based on magnetic fly-ash-cenosphere
摘要
Abstract
Magnetic fly-ash-cenospheres (MFACs) were firstly preparedvia an effective coprecipitation method, and then the surface of the MFACs was endowed with reactive vinyl groups through modification with 3-(methacryloyloxy)propyl trimethoxysilane (MPS). Based on the MFACs-MPS, the magnetic molecularly imprinted polymers (MMIPs) were further synthesized for the selective recognition of cefalexin (CFX). MMIPs were characterized by SEM, FT-IR, XRD, TGA and VSM, which indicated that the MMIIPs exhibited magnetic sensitivity (Ms=12.155 emu·g−1), thermal stability and the larger specific surface area (123.65 m2·g−1). Batch mode adsorption studies were carried out to investigate adsorption equilibrium, kinetics and selective recognition. The Langmuir isotherm model was fitted well to the equilibrium data, and the monolayer adsorption capacity of the MMIPs was 69.55 mg·g−1 at 25℃. The selective recognition experiments demonstrated high affinity and selectivity towards CFX over structurally related antibiotic compounds. Combined with high performance liquid chromatographic analysis technology, the prepared MMIIPs were successfully applied to the separation of CFX from environmental samples.关键词
粉煤灰空心微珠/聚合物/吸附/头孢氨苄/选择性Key words
fly-ash-cenosphere/polymers/adsorption/cefalexin/selectivity分类
资源环境引用本文复制引用
毛艳丽,罗世田,吴俊峰,刘彪,康海彦,朱慧杰,王红强,王巷文..磁性粉煤灰空心微珠表面印迹聚合物选择性识别头孢氨苄[J].化工学报,2016,67(10):4273-4281,9.基金项目
国家自然科学基金项目（51509083）；中国博士后青年基金项目（2011M500870）；河南省高校科技创新人才支持计划项目(2012HASTTT026)；河南省科技攻关项目（152102210094）。@@@@Foundation item：supported by the National Natural Science Foundation of China (51509083), the Postdoctoral Foundation of China (2011M500870), the Natural Science Foundation of Henan Province (2012HASTTT026) and the Scientific and Technological Foundation of Henan Province (152102210094) （2012HASTTT026）
