文献类型：期刊文献

英文题名：Highly efficient and selective removal of trace lead from aqueous solutions by hollow mesoporous silica loaded with molecularly imprinted polymers

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

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Lab Low Dimens Mat Chem, Key Lab Ultrafine Mat 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：2017

卷号：328

起止页码：160

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20170403286217);WOS:【SCI-EXPANDED(收录号:WOS:000395228300018)】；

基金：This work was financially supported by the National Key Research and Development Program of China (Grant No. 2016YFA0203700); NSFC (Grant Nos. 51672083, 51572083, 5141101086, 51461165202, 51472085); Shanghai Rising-Star Program (16QA1401300); Shanghai Chenguang project (13CG25); 111 project (B14018); The Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Hollow mesoporous silica; Molecular imprinting; Pb2+; Selectivity; Real water sample

摘要：A novel type of adsorbent for the selective recognition and adsorption of trace Pb2+ from aqueous solutions has been successfully constructed simply by grafting molecularly imprinted polymers (MIPs) onto hollow mesoporous silica (HMS). Attractively, the HMS loaded with MIPs (H-MIPs) exhibits a fast adsorption kinetics, marked adsorption capacity of 40.52 mg/g and extremely high selectivity toward Pb2+ over Cu2+, Zn2+, Co2+, Mn2+ and Ni2+, and the selectivity coefficients have been determined to be as high as 50. Moreover, such high adsorptive capability and selectivity were retained for at least 6 runs, indicating the stability and reusability of H-MIPs. Lead ion contaminants in real water samples were successfully concentrated and approximately 100% recovered using H-MIPs. Theoretical analysis shows that the adsorption process of H-MIPs follows the pseudo-second-order kinetic and Langmuir isotherm models. These demonstrate that H-MIPs are greatly potential for the rapid and highly efficient removal of trace Pb2+ ions in complicated matrices. (C) 2017 Published by Elsevier B.V.