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Liu Y, Zhang Z, Li Z, Wei X, Zhao F, Fan C, Jiang Z. Surface Segregation Methods toward Molecular Separation Membranes. SMALL METHODS 2023; 7:e2300737. [PMID: 37668447 DOI: 10.1002/smtd.202300737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/14/2023] [Indexed: 09/06/2023]
Abstract
As a highly promising approach to solving the issues of energy and environment, membrane technology has gained increasing attention in various fields including water treatment, liquid separations, and gas separations, owing to its high energy efficiency and eco-friendliness. Surface segregation, a phenomenon widely found in nature, exhibits irreplaceable advantages in membrane fabrication since it is an in situ method for synchronous modification of membrane and pore surfaces during the membrane forming process. Meanwhile, combined with the development of synthesis chemistry and nanomaterial, the group has developed surface segregation as a versatile membrane fabrication method using diverse surface segregation agents. In this review, the recent breakthroughs in surface segregation methods and their applications in membrane fabrication are first briefly introduced. Then, the surface segregation phenomena and the classification of surface segregation agents are discussed. As the major part of this review, the authors focus on surface segregation methods including free surface segregation, forced surface segregation, synergistic surface segregation, and reaction-enhanced surface segregation. The strategies for regulating the physical and chemical microenvironments of membrane and pore surfaces through the surface segregation method are emphasized. The representative applications of surface segregation membranes are presented. Finally, the current challenges and future perspectives are highlighted.
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Affiliation(s)
- Yanan Liu
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Zhao Zhang
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Zongmei Li
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Xiaocui Wei
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Fu Zhao
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Chunyang Fan
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Zhongyi Jiang
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China
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Mygiakis E, Glynos E, Sakellariou G. Controlled block-polymerization of styrene, divinylbenzene and ethylene oxide. Intermolecular cross-linking towards well-defined miktoarm copolymer stars. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Membrane biofouling control using polyvinylidene fluoride membrane blended with quaternary ammonium compound assembled on carbon material. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.06.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Narayanan T, Wacklin H, Konovalov O, Lund R. Recent applications of synchrotron radiation and neutrons in the study of soft matter. CRYSTALLOGR REV 2017. [DOI: 10.1080/0889311x.2016.1277212] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | - Hanna Wacklin
- European Spallation Source ERIC, Lund, Sweden
- Physical Chemistry, Lund University, Lund, Sweden
| | | | - Reidar Lund
- Department of Chemistry, University of Oslo, Blindern, Oslo, Norway
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Cano L, Di Mauro AE, Striccoli M, Curri ML, Tercjak A. Optical and conductive properties of as-synthesized organic-capped TiO₂ nanorods highly dispersible in polystyrene-block-poly(methyl methacrylate) diblock copolymer. ACS APPLIED MATERIALS & INTERFACES 2014; 6:11805-11814. [PMID: 24979757 DOI: 10.1021/am502542k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
As-synthesized organic-capped TiO2 nanorods were incorporated into polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) diblock copolymer to achieve TiO2/PS-b-PMMA nanocomposites with enhanced optical and conductive properties. The specific surface chemistry of TiO2 nanorods derived from the colloidal synthetic approach allowed their prompt incorporation in the PS-b-PMMA block copolymer template up to 50 wt %, which resulted in films with an extended coverage of highly dispersed nanoparticles for contents higher than 30 wt %. At such high nanorod contents, the films fabricated by the prepared nanocomposites demonstrated enhanced optical properties. Atomic force microscopy investigation of the nanocomposite films showed a cylindrical morphology for low nanorod contents. Conversely, higher nanorod contents resulted upon removal of the organic component in the nanocomposites with UV treatment in overall nanorod coverage of the film surface with the concomitant formation of charge percolation paths, which led to noticeable conductivity values. EFM and PF-TUNA measurements confirmed the conductive properties of the composites at nanoscale, whereas semiconductor analyzer measurements provided their macroscale characterization. In addition, an increase in the UV-vis absorption was observed with the increase in the nanorod content along with a remarkable conductivity of the overall film.
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Affiliation(s)
- Laida Cano
- Group Materials and Technologies, Chemical Engineering and Environmental Department, Polytechnic School, University of the Basque Country (UPV/EHU) , Plaza Europa 1, 20018 Donostia-San Sebastián, Spain
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Holley D, Ruppel M, Mays J, Urban V, Baskaran D. Polystyrene nanoparticles with tunable interfaces and softness. POLYMER 2014. [DOI: 10.1016/j.polymer.2013.11.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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