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An electroactive montmorillonite/polyaniline nanocomposite film: Superfast ion transport and ultra-affinity ion recognition for rapid and selective separation of Pb2+ions
Niu, Junjian1; Zhang, Wei1; Li, Shuai1; Yan, Wenjun2; Hao, Xiaogang1; Wang, Zhongde1; Wang, Fengbin1; Zhang, Guangjin3; Guan, Guoqing4
2021-06-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume413Pages:13
Abstract

Although a variety of functional materials have been developed for the separation target ions, most of them suffer from sluggish uptake of ions and deficient selectivity. Herein, a nanocomposite electroactive film with a sandwich-like structure was facilely prepared by intercalating conductive polyaniline (PANI) into the interlayer of montmorillonite (MMT) with layered structure for rapid and selective separation of Pb2+ ions. This MMT/ PANI nanocomposite film exhibited an extreme Pb2+ ion uptake rate (1422.67 ?g?(g?s)-1), which exceeded those of conventional adsorbents by 2 to 4 orders of magnitude. Meanwhile, trace Pb2+ ions at ppb level in the wastewater were quantitatively detected by employing the MMT/PANI nanocomposite electroactive film based on its strong affinity towards Pb2+ ions. It was confirmed that the rapid and selective Pb2+ ion uptake/release by the MMT/PANI composite film was achieved via the directional proton migration powered by the electrochemical redox of the intercalated PANI, the superfast ion transport in atomically interlamellar ion transport path and the ultra-affinity ion recognition of ion capture sites on MMT layer. It is expected that such an MMT/ PANI composite film could be a promising alternative of conventional materials for separating and detecting of Pb2+ ions in wastewater.

KeywordElectroactive Nanocomposite Film Proton Migration Superfast Ion Transport Ultra-affinity Ion recognitIon Rapid And Selective Separation
DOI10.1016/j.cej.2020.127750
Language英语
Funding ProjectNational Natural Science Foundation of China[21878206] ; Science and Technology Innovation Project for Excellent Talents of Shanxi Province[201805D211040] ; JSPS KAKENHI, Japan[19K12395]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Science and Technology Innovation Project for Excellent Talents of Shanxi Province ; JSPS KAKENHI, Japan
WOS IDWOS:000637698600004
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48378
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Zhongde; Wang, Fengbin
Affiliation1.Taiyuan Univ Technol, Dept Chem Engn, Taiyuan 030024, Peoples R China
2.Chinese Acad Sci, Inst Coal Chem, Analyt Instrumentat Ctr, Taiyuan 030001, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
4.Hirosaki Univ, Dept Renewable Energy, Inst Reg Innovat, 2-1-3 Matsubara, Aomori 0300813, Japan
Recommended Citation
GB/T 7714
Niu, Junjian,Zhang, Wei,Li, Shuai,et al. An electroactive montmorillonite/polyaniline nanocomposite film: Superfast ion transport and ultra-affinity ion recognition for rapid and selective separation of Pb2+ions[J]. CHEMICAL ENGINEERING JOURNAL,2021,413:13.
APA Niu, Junjian.,Zhang, Wei.,Li, Shuai.,Yan, Wenjun.,Hao, Xiaogang.,...&Guan, Guoqing.(2021).An electroactive montmorillonite/polyaniline nanocomposite film: Superfast ion transport and ultra-affinity ion recognition for rapid and selective separation of Pb2+ions.CHEMICAL ENGINEERING JOURNAL,413,13.
MLA Niu, Junjian,et al."An electroactive montmorillonite/polyaniline nanocomposite film: Superfast ion transport and ultra-affinity ion recognition for rapid and selective separation of Pb2+ions".CHEMICAL ENGINEERING JOURNAL 413(2021):13.
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