文献类型：期刊文献

英文题名：Magnetic, core-shell structured and surface molecularly imprinted polymers for the rapid and selective recognition of salicylic acid from aqueous solutions

作者：Zhang, Zulei[1,2];Niu, Dechao[1];Li, Yongsheng[1];Shi, Jianlin[1,3]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Lab Low Dimens Mat Chem,Minist Educ, Shanghai 200237, Peoples R China;[2]Jiaxing Univ, Sch Biol & Chem Engn, Jiaxing 314001, Peoples R China;[3]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

年份：2018

卷号：435

起止页码：178

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20174704415432);WOS:【SCI-EXPANDED(收录号:WOS:000424247500023)】；

基金：This work was financially supported by NSFC (Grant No. 51572083, 51572084, 51461165202, 51472085); Shanghai Rising-Star Program 16QA1401300); The Program for Science and Technology of Zhejiang (2018C37076); Shanghai Chenguang project (13CG25); 111 project (B14018); The Fundamental Research Funds for the Central Universities (222201718002).

语种：英文

外文关键词：Surface imprinting strategy; Magnetic; Core-shell; Salicylic acid; Environmental water samples

摘要：In this work, a novel kind of magnetic, core-shell structured and surface molecularly imprinted polymers (MMIPs) for the recognition of salicylic acid (SA) was facilely synthesized through a surface imprinting and sol-gel polymerization approach. The as-synthesized MMIPs exhibit uniform core-shell structure and favorable magnetic properties with a saturation magnetization of 22.8 emu g(-1). The binding experiments demonstrated that MMIPs possessed high binding and specific recognition capacity, as well as fast binding kinetics and phase separation rate. The maximum binding capacity of MMIPs is around 36.8 mg g(-1), nearly 6 times that of the magnetic non-imprinted polymers (MNIPs). Moreover, the selectivity experiments show that all the relative selectivity coefficients towards SA over its structure analogs are higher than 18, further indicating the markedly enhanced binding selectivity of MMIPs. Furthermore, the MMIPs were successfully applied for the determination of SA in environmental water samples with the recovery rates ranging from 94.0 to 108.0 %. This strategy may provide a versatile approach for the fabrication of well-defined molecularly imprinted polymers on nanomaterials for the analysis of complicated matrixes. (C) 2017 Published by Elsevier B.V.