文献类型：期刊文献

英文题名：A facile ion imprinted synthesis of selective biosorbent for Cu2+ via microfluidic technology

作者：Zhu, Yong[1];Bai, Zhishan[1];Luo, Wenqiang[1];Wang, Bingjie[1];Zhai, Linlin[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2017

卷号：92

期号：8

起止页码：2009

外文期刊名：JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY

收录：;EI(收录号：20171003422420);WOS:【SCI-EXPANDED(收录号:WOS:000423721800019)】；

基金：We acknowledge the support by National Basic Research Program of China (2014CB748500) and National Natural Science Foundation of China (51578239, 51322805).

语种：英文

外文关键词：microfluidic technology; ion-imprinted approach; adsorption; Cu2+; selectivity

摘要：BACKGROUND: Heavy metal pollution has become one of the most serious environmental problems. Novel approaches are needed for removal of heavymetal from water. Copper, a familiar heavymetal, has attracted much attention for its remarkable toxic domino offect at elevated concentrations. RESULTS: Anovel ion imprinted approach combinedwithmicrofluidic technologywas explored. Cu2+ was taken as ionic template and chitosan was used as carrier material. Chemical crosslinking was applied in the formation of imprinted sign. A selective biosorbent of ion-imprinted microspheres (IIMS) with uniform size, regular shape and high performance for Cu2+ had been prepared. The SEM, FTIR, EDS, XPS were employed to detect their distinct features. IIMS showed much higher adsorption capacity (q(m) = 81.97 mg g(-1)) than those non-imprinted chitosan microspheres (CSMS). The adsorption isotherm fitted the Langmuir equation while thermodynamic adsorption resultswere considered strongproof of an adsorption exothermal process. IIMS exhibited excellent selectivity for Cu2+ when competitive metal ions and Cu2+ co-existed together, which profited from the specific spaces of Cu2+ template left after crosslinking and desorption. Results confirmed that chemical adsorption was dominant and amino played an important role in adsorption process. CONCLUSION: IIMS showed high adsorption capacity and excellent selectivity for Cu2+. Combining microfluidic technology with an ion-imprintedmethod proved to be a promising process for preparing selective materials. (C) 2017 Society of Chemical Industry