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      Electrospinning nanofibers and nanomembranes for oil/water separation

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          Abstract

          This paper gives a current summary of research advances in the field of electrospun nanofibers and nanofiber membranes for oil/water separation. And a discussion about the future field development is given.

          Abstract

          Offshore oil spills, industrial oily wastewater, and domestic oil pollution are some of the most serious global challenges, and are leading environmental causes of morbidity and mortality. Nanofiber membrane materials manufactured via electrostatic spinning for oil/water separation have become one of the emerging technologies to treat oil/water emulsions. Here, we give a comprehensive review of current progress on electrospinning nanofibers for oil/water separation to promote the field’s advancement. Typical examples of hydrophilic–oleophobic, hydrophobic–oleophilic, and special wettability nanofiber membranes are systematically summarized. The effects of material selection, fiber production processes, and subsequent modifications on the membrane performance are compared and discussed. Potential shortcomings of various types of separation membranes and the potential solutions are provided. The review concludes with a summary and outlook on future directions and innovations in electrospinning nanofibers and membranes for oil/water separation.

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          Electrospinning and Electrospun Nanofibers: Methods, Materials, and Applications

          Jiajia Xue, Tong Wu, Yunqian Dai … (2019)
          Electrospinning is a versatile and viable technique for generating ultrathin fibers. Remarkable progress has been made with regard to the development of electrospinning methods and engineering of electrospun nanofibers to suit or enable various applications. We aim to provide a comprehensive overview of electrospinning, including the principle, methods, materials, and applications. We begin with a brief introduction to the early history of electrospinning, followed by discussion of its principle and typical apparatus. We then discuss its renaissance over the past two decades as a powerful technology for the production of nanofibers with diversified compositions, structures, and properties. Afterward, we discuss the applications of electrospun nanofibers, including their use as “smart” mats, filtration membranes, catalytic supports, energy harvesting/conversion/storage components, and photonic and electronic devices, as well as biomedical scaffolds. We highlight the most relevant and recent advances related to the applications of electrospun nanofibers by focusing on the most representative examples. We also offer perspectives on the challenges, opportunities, and new directions for future development. At the end, we discuss approaches to the scale-up production of electrospun nanofibers and briefly discuss various types of commercial products based on electrospun nanofibers that have found widespread use in our everyday life.
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            Cellulose nanomaterials review: structure, properties and nanocomposites.

            Robert Moon, Ashlie Martini, John Nairn … (2011)
            This critical review provides a processing-structure-property perspective on recent advances in cellulose nanoparticles and composites produced from them. It summarizes cellulose nanoparticles in terms of particle morphology, crystal structure, and properties. Also described are the self-assembly and rheological properties of cellulose nanoparticle suspensions. The methodology of composite processing and resulting properties are fully covered, with an emphasis on neat and high fraction cellulose composites. Additionally, advances in predictive modeling from molecular dynamic simulations of crystalline cellulose to the continuum modeling of composites made with such particles are reviewed (392 references).
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              Bioinspired self-repairing slippery surfaces with pressure-stable omniphobicity.

              Ka-tak T Wong, Alison Grinthal, Sing Wong … (2011)
              Creating a robust synthetic surface that repels various liquids would have broad technological implications for areas ranging from biomedical devices and fuel transport to architecture but has proved extremely challenging. Inspirations from natural nonwetting structures, particularly the leaves of the lotus, have led to the development of liquid-repellent microtextured surfaces that rely on the formation of a stable air-liquid interface. Despite over a decade of intense research, these surfaces are, however, still plagued with problems that restrict their practical applications: limited oleophobicity with high contact angle hysteresis, failure under pressure and upon physical damage, inability to self-heal and high production cost. To address these challenges, here we report a strategy to create self-healing, slippery liquid-infused porous surface(s) (SLIPS) with exceptional liquid- and ice-repellency, pressure stability and enhanced optical transparency. Our approach-inspired by Nepenthes pitcher plants-is conceptually different from the lotus effect, because we use nano/microstructured substrates to lock in place the infused lubricating fluid. We define the requirements for which the lubricant forms a stable, defect-free and inert 'slippery' interface. This surface outperforms its natural counterparts and state-of-the-art synthetic liquid-repellent surfaces in its capability to repel various simple and complex liquids (water, hydrocarbons, crude oil and blood), maintain low contact angle hysteresis (<2.5°), quickly restore liquid-repellency after physical damage (within 0.1-1 s), resist ice adhesion, and function at high pressures (up to about 680 atm). We show that these properties are insensitive to the precise geometry of the underlying substrate, making our approach applicable to various inexpensive, low-surface-energy structured materials (such as porous Teflon membrane). We envision that these slippery surfaces will be useful in fluid handling and transportation, optical sensing, medicine, and as self-cleaning and anti-fouling materials operating in extreme environments. © 2011 Macmillan Publishers Limited. All rights reserved
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                Author and article information

                Contributors
                Journal
                Journal ID (publisher-id): JMCAET
                Title: Journal of Materials Chemistry A
                Abbreviated Title: J. Mater. Chem. A
                Publisher: Royal Society of Chemistry (RSC)
                ISSN (Print): 2050-7488
                ISSN (Electronic): 2050-7496
                Publication date Created: October 05 2021
                Publication date (Electronic): 2021
                Volume: 9
                Issue: 38
                Pages: 21659-21684
                Affiliations
                [1 ]Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
                [2 ]Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA
                [3 ]Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
                Article
                DOI: 10.1039/D1TA05873H
                SO-VID: 5799c281-55f6-4ce6-a682-0c1ec8c947c5
                Copyright © © 2021
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                http://rsc.li/journals-terms-of-use

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