PMID- 33858093 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20210601 LR - 20210601 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 411 DP - 2021 Jun 5 TI - A novel carboxylated polyacrylonitrile nanofibrous membrane with high adsorption capacity for fluoride removal from water. PG - 125113 LID - S0304-3894(21)00077-7 [pii] LID - 10.1016/j.jhazmat.2021.125113 [doi] AB - To deal with the drinking water safety caused by fluoride, a novel carboxylated polyacrylonitrile nanofibrous membrane (C-PAN NFM) is designed and fabricated massively for the first time by adopting synchronously biaxial stretching and carboxylation. The C-PAN NFM is composed of the layered stack structure by cross-linked nanofibers. Due to its high specific surface area, excellent hydrophilicity, a large amount of carboxyl and amine groups, C-PAN NFM owns high fluoride adsorption capacity and outstanding selectivity. Both the carboxylation and acid treatment of C-PAN NFM improved the fluoride adsorption capacity remarkably. Specifically, C-PAN NFM shows excellent reusability without secondary pollution. The fluoride adsorption behavior of C-PAN NFM is dominated by chemical adsorption, and the adsorption mechanism is mainly driven by hydrogen bonding and ion exchange. The mass-produced C-PAN NFM is a novel polyacrylonitrile-based porous membrane that shows a great application potential for fluoride removal with good efficiency and recyclability. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Chen, Xin AU - Chen X AD - National Synchrotron Radiation Lab, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China; National Co-Innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, China. FAU - Wan, Caixia AU - Wan C AD - National Synchrotron Radiation Lab, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China. FAU - Yu, Rui AU - Yu R AD - National Synchrotron Radiation Lab, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China. FAU - Meng, Lingpu AU - Meng L AD - National Synchrotron Radiation Lab, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China. FAU - Wang, Daoliang AU - Wang D AD - National Synchrotron Radiation Lab, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China. Electronic address: dlwang@ustc.edu.cn. FAU - Chen, Wei AU - Chen W AD - National Synchrotron Radiation Lab, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China. FAU - Duan, Tao AU - Duan T AD - National Co-Innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, China. FAU - Li, Liangbin AU - Li L AD - National Synchrotron Radiation Lab, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China. Electronic address: lbli@ustc.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210115 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 SB - IM OTO - NOTNLM OT - Carboxylated polyacrylonitrile nanofibrous membrane OT - Fluoride removal OT - Secondary pollution OT - Selectivity and reusability OT - Synchronously biaxial stretching EDAT- 2021/04/17 06:00 MHDA- 2021/04/17 06:01 CRDT- 2021/04/16 01:00 PHST- 2020/09/20 00:00 [received] PHST- 2021/01/01 00:00 [revised] PHST- 2021/01/10 00:00 [accepted] PHST- 2021/04/16 01:00 [entrez] PHST- 2021/04/17 06:00 [pubmed] PHST- 2021/04/17 06:01 [medline] AID - S0304-3894(21)00077-7 [pii] AID - 10.1016/j.jhazmat.2021.125113 [doi] PST - ppublish SO - J Hazard Mater. 2021 Jun 5;411:125113. doi: 10.1016/j.jhazmat.2021.125113. Epub 2021 Jan 15.