文献类型：期刊文献

英文题名：Efficient removal of Pb(II) by amine functionalized porous organic polymer through post-synthetic modification

作者：He, Yan[1,2];Liu, Qinqin[1,2];Hu, Jun[1,2];Zhao, Chengxi[1,2];Peng, Changjun[1,2];Yang, Qiang[3];Wang, Hualin[3];Liu, Honglai[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Environm Protect Key Lab Environm Risk Assessment, Shanghai 200237, Peoples R China

年份：2017

卷号：180

起止页码：142

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20171103434966);WOS:【SCI-EXPANDED(收录号:WOS:000399516500016)】；

基金：Financial support for this work was provided by the National Natural Science Foundation of China (Nos. 21136004, 91334203, 21176066), National Basic Research Program of China (2013CB733501), and the Fundamental Research Funds for the Central Universities of China (No. 222201313001).

语种：英文

外文关键词：Porous organic polymer; Pb(Il); Adsorption; Theoretical calculations; Reusability

摘要：Porous organic polymers (POPs), a new class of porous materials constructed by organic molecular building blocks, have attracted much attention. To design POPs with both good porosity and specific-task functionalization is still a critical challenge. In this work, using a simple Friedel-Crafts one-step reaction, one of the most common organic compound methylbenzene monomers were polymerized through the cross linker formaldehyde dimethyl acetal (FDA) to produce a cost-effective non-functionalized porous polymer (POP-CH3). Moreover, amine groups were further incorporated into the network by the post synthetic modification method. The resulted porous polymer POP-NH2 presented highly effective in removing Pb(II) from aqueous solution. The maximum Pb(Il) adsorption capacity, q(max) evaluated from the Langmuir model was 523.6 mg g(-1). The combination of FT-IR experimental results and the theoretical quantum calculations illustrated that the amine groups (-NH2) can easily form coordination complexes with Pb(II), which were responsible for efficient adsorption. The generated POP-NH2 could be regenerated effectively and recycled at least four times without significant loss of adsorption efficiency. Hence, the outstanding Pb(II) adsorption capacity, excellent reusability as well as low cost of synthesis create potential polymer POP-NH2 to be an attractive adsorbent for removing toxic metal ions from aqueous solution. (C) 2017 Elsevier B.V. All rights reserved.