PMID- 29621643 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180607 LR - 20180607 IS - 1095-7103 (Electronic) IS - 0021-9797 (Linking) VI - 523 DP - 2018 Aug 1 TI - Potential-induced reversible uptake/release of perchlorate from wastewater by polypyrrole@CoNi-layered double hydroxide modified electrode with proton-ligand effect. PG - 159-168 LID - S0021-9797(18)30354-0 [pii] LID - 10.1016/j.jcis.2018.03.098 [doi] AB - In this study, CoNi-layered double hydroxide (CoNi-LDH) nanosheets coated conducting polypyrrole (PPy) nanowire was controllably fabricated on Pt plate or carbon cloth by using unipolar pulse electrodeposition (UPED) method and served as a novel electrochemically switched ion exchange (ESIX) hybrid film with proton-ligand effect for the removal of perchlorate anions (ClO(4)(-)). It is expected that the space among CoNi-LDH nanosheets of the shell could act as the reservoir for the anions while the PPy core serve as the potential-induced element for proton-ligand. The effects of pulse potential during film deposition and initial pH of the wastewater on the ClO(4)(-) removal performance of this core-shell hybrid film were investigated. It is found that ClO(4)(-) adsorption onto PPy@CoNi-LDH followed pseudo-second-order model, and the film fabricated with -1.5 V pulse potential showed an excellent performance for the rapid removal of ClO(4)(-) with a high selectivity, and the ClO(4)(-) adsorption quantity reached as high as 302 mg g(-)(1). In a wide pH range (3-10), the hybrid film removed ClO(4)(-) efficiently. The proton-ligand effect in PPy@CoNi-LDH was proved by using XPS analysis and density functional theory. Such a PPy@CoNi-LDH hybrid core-shell film should be a potential electroactive material for the separation of ClO(4)(-) and other anions from wastewater. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - Yang, Yanyan AU - Yang Y AD - Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Du, Xiao AU - Du X AD - Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - An, Xiaowei AU - An X AD - Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Ding, Shengqi AU - Ding S AD - Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Liu, Feifan AU - Liu F AD - Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Zhang, Zhonglin AU - Zhang Z AD - Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Ma, Xuli AU - Ma X AD - Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Hao, Xiaogang AU - Hao X AD - Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. Electronic address: xghao@tyut.edu.cn. FAU - Guan, Guoqing AU - Guan G AD - North Japan Research Institute for Sustainable Energy (NJRISE), Hirosaki University, 2-1-3, Matsubara, Aomori 030-0813, Japan. Electronic address: guan@hirosaki-u.ac.jp. FAU - Zhang, Hui AU - Zhang H AD - Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B8, Canada. LA - eng PT - Journal Article DEP - 20180329 PL - United States TA - J Colloid Interface Sci JT - Journal of colloid and interface science JID - 0043125 OTO - NOTNLM OT - Anions removal OT - Core-shell nanostructures OT - Electrochemically switched ion exchange OT - Polypyrrole@CoNi-layered double hydroxide OT - Potential-induced OT - Proton-ligand effect EDAT- 2018/04/06 06:00 MHDA- 2018/04/06 06:01 CRDT- 2018/04/06 06:00 PHST- 2018/01/18 00:00 [received] PHST- 2018/03/26 00:00 [revised] PHST- 2018/03/28 00:00 [accepted] PHST- 2018/04/06 06:00 [pubmed] PHST- 2018/04/06 06:01 [medline] PHST- 2018/04/06 06:00 [entrez] AID - S0021-9797(18)30354-0 [pii] AID - 10.1016/j.jcis.2018.03.098 [doi] PST - ppublish SO - J Colloid Interface Sci. 2018 Aug 1;523:159-168. doi: 10.1016/j.jcis.2018.03.098. Epub 2018 Mar 29.