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Membranes
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Novel Membrane Materials
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Novel Membrane Materials

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Chemistry".

Deadline for manuscript submissions: closed (31 October 2018) | Viewed by 44541

Special Issue Editors

Prof. Dr. Chuyang Tang

grade E-Mail Website
Guest Editor
Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China
Interests: membrane technology; desalination; wastewater reclamation; water chemistry; environmental materials
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yingchao Dong

E-Mail Website
Guest Editor
School of Environmental Science & Technology (SEST), Dalian University of Technology (DUT), Dalian 116024, China
Interests: inorganic membrane; water treatment; environmental material
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, we have been witnessing an exciting wave of developments in new membrane materials and structures. Membranes made of novel microporous materials (metal organic frameworks, covalent organic frameworks, polymers of intrinsic microporosity, zeolites, etc.) show unprecedented separation performance. Carbon-based materials (e.g., carbon nanotubes, graphene, and graphene oxide) hold great promise in delivering excellent combination of permeability, selectivity, and antifouling performance. While the revolution of aquaporin-based biomimetic membranes is still ongoing, a new string of developments in synthetic channels have emerged.

This Special Issue is dedicated to provide a comprehensive coverage on the recent progresses in “Novel Membrane Materials” and their use in all types of membranes and membrane processes. It offers a perfect site to report the synthesis and characterization of novel materials, the related membrane fabrication methods, and their applications to gas separation, water treatment, desalination, drug delivery, resource recovery, energy production, batteries, etc. Both original papers and critical reviews are welcome.

Prof. Dr. Chuyang Y. Tang
Prof. Dr. Yingchao Dong
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Membranes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

 

Keywords

  • Bio-inspired materials
  • Biomimetic membranes
  • Functionalization
  • Surface modification
  • Water channels
  • Ion channels
  • Aquaporins
  • Synthetic channels
  • Nanocomposite membranes
  • Mix matrix membranes (MMMs)
  • Microporous
  • Mesoporous
  • Nanomaterials
  • 2D materials
  • Polymers of intrinsic microporosity (PIMs)
  • Block copolymers
  • Carbon based membranes
  • Carbon nanotubes (CNTs)
  • Covalent organic frameworks (COFs)
  • Graphene
  • Graphene oxide (GO)
  • Material synthesis
  • Membrane fabrication
  • Metal organic frameworks (MOFs)
  • Novel materials
  • Zeolite
  • Novel membranes

Published Papers (5 papers)

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Research

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12 pages, 2355 KiB  
Article
Effect of Chemical Structure on the Performance of Sulfonated Poly(aryl ether sulfone) Composite Nanofiltration Membranes
by Shouhai Zhang, Shanshan Guan, Chengde Liu, Zhenlin Wang, Danhui Wang and Xigao Jian
Membranes 2019, 9(1), 6; https://doi.org/10.3390/membranes9010006 - 02 Jan 2019
Cited by 11 | Viewed by 3358
Abstract
This paper discusses the effect of the chemical structure of sulfonated poly(aryl ether sulfone) on the performance of composite nanofiltration membranes. The composite nanofiltration membranes were fabricated by coating sulfonated poly(aryl ether sulfone) solution onto the top surface of poly(phthalazinone ether sulfone ketone) [...] Read more.
This paper discusses the effect of the chemical structure of sulfonated poly(aryl ether sulfone) on the performance of composite nanofiltration membranes. The composite nanofiltration membranes were fabricated by coating sulfonated poly(aryl ether sulfone) solution onto the top surface of poly(phthalazinone ether sulfone ketone) support membranes. Three kinds of sulfonated poly(aryl ether sulfone)s with different amounts of phthalazinone moieties, namely, sulfonated poly(phthalazinone ether sulfone) (SPPES), sulfonated poly(phthalazinone biphenyl ether sulfone) (SPPBES), and sulfonated poly(phthalazinone hydroquinone ether sulfone)s (SPPHES), were used as coating materials. The solvents used in preparing the coating solution were investigated and optimized. The separation properties, thermal stability, and chlorine resistance of composite membranes were determined. The structures and morphologies of membranes were characterized with FTIR and SEM, respectively. The membrane prepared from SPPES with more phthalazinone moiety groups showed high water flux and salt rejection. The salt rejection of composite membranes followed the order SPPES > SPPHES > SPPBES. The rejection of the three composite membranes decreased slightly with the solution temperature rising from 20 to 90 °C, while the composite membrane with SPPES as the active layer showed a higher increase in flux than others. The results indicate that SPPES composite membranes show better thermal stability than others. Full article
(This article belongs to the Special Issue Novel Membrane Materials)
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12 pages, 4287 KiB  
Article
Ceramic-Based Composite Membrane with a Porous Network Surface Featuring a Highly Stable Flux for Drinking Water Purification
by Li Zhu, Kadalipura Puttaswamy Rakesh, Man Xu and Yingchao Dong
Membranes 2019, 9(1), 5; https://doi.org/10.3390/membranes9010005 - 02 Jan 2019
Cited by 16 | Viewed by 3762
Abstract
Highly efficient drinking water purification is still an important challenge for membrane techniques where high flux, high rejection, and low fouling are highly emphasized. In the present work, a porous network surface with carbon nanotubes (CNTs) was in situ constructed on hierarchically-structured mullite [...] Read more.
Highly efficient drinking water purification is still an important challenge for membrane techniques where high flux, high rejection, and low fouling are highly emphasized. In the present work, a porous network surface with carbon nanotubes (CNTs) was in situ constructed on hierarchically-structured mullite ceramic membranes. Interestingly, such a composite structure was demonstrated to effectively remove bacteria from drinking water with a highly stable long-term flux. After membrane structure characterizations, separation performance, such as flux and rejection, was assessed by the purification of bacteria-contaminated drinking water. The results confirmed that the mullite-CNT composite membrane claimed a complete removal of two model bacteria (100% rejection of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus)), driven by a trans-membrane pressure of 0.1 MPa, where a surface sieving mechanism was dominant. A highly stable long-term flux for the 24 h filtration process was achieved, which can be attributed to the porous membrane surface with a special randomly-oriented CNTs network structure, featuring very high three-dimensional open porosity, allowing water to rapidly transport. The bacteria were only trapped on the CNTs network surface via surface filtration, without pore plugging, endowing the mullite-CNT membrane with unprecedentedly low fouling propensity to keep high flux with long-term operation time. Full article
(This article belongs to the Special Issue Novel Membrane Materials)
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Review

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32 pages, 9940 KiB  
Review
A Review on the Progress in Nanoparticle/C Hybrid CMS Membranes for Gas Separation
by Lin Li, Ruisong Xu, Chengwen Song, Bing Zhang, Qingling Liu and Tonghua Wang
Membranes 2018, 8(4), 134; https://doi.org/10.3390/membranes8040134 - 17 Dec 2018
Cited by 28 | Viewed by 5134
Abstract
Carbon molecular sieve (CMS) membranes are novel materials derived from the pyrolysis of the polymeric precursors and have a well-developed ultra-microporous structure that can separate small gas pairs with minor difference in diameter, and thus exhibit higher gas permeability and selectivity than polymeric [...] Read more.
Carbon molecular sieve (CMS) membranes are novel materials derived from the pyrolysis of the polymeric precursors and have a well-developed ultra-microporous structure that can separate small gas pairs with minor difference in diameter, and thus exhibit higher gas permeability and selectivity than polymeric membranes. However, the gas permeability for traditional pure CMS membranes now cannot satisfy the requirements of commercial applications due to their disordered pore structure and high gas molecular diffusion resistance. Incorporating functional materials into membrane precursors to fabricate hybrid CMS membranes has been regarded as an effective way to tune the disordered pore structure of traditional pure CMS membranes, and thus to greatly improve their gas permeability. Many nanoparticles have been tested as the functional foreign materials to fabricate the hybrid CMS membranes with more developed microporous structure and enhanced gas separation performance. This review discusses the hybridized nanoparticle selection and effect of the species, quantities and particle sizes of the foreign materials on CMS membrane characteristics and performance. The function of the materials incorporated inside the hybrid CMS membranes is also analyzed. It is identified that preparation of hybrid CMS membranes provides a simple and convenient route to efficiently improve the trade-off relationship between permeability and selectivity, and to enable the construction of carbon-based composite materials with novel functionalities in membrane science. Full article
(This article belongs to the Special Issue Novel Membrane Materials)
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6945 KiB  
Review
Recent Developments of Graphene Oxide-Based Membranes: A Review
by Jinxia Ma, Dan Ping and Xinfa Dong
Membranes 2017, 7(3), 52; https://doi.org/10.3390/membranes7030052 - 12 Sep 2017
Cited by 150 | Viewed by 15637
Abstract
Membrane-based separation technology has attracted great interest in many separation fields due to its advantages of easy-operation, energy-efficiency, easy scale-up, and environmental friendliness. The development of novel membrane materials and membrane structures is an urgent demand to promote membrane-based separation technology. Graphene oxide [...] Read more.
Membrane-based separation technology has attracted great interest in many separation fields due to its advantages of easy-operation, energy-efficiency, easy scale-up, and environmental friendliness. The development of novel membrane materials and membrane structures is an urgent demand to promote membrane-based separation technology. Graphene oxide (GO), as an emerging star nano-building material, has showed great potential in the membrane-based separation field. In this review paper, the latest research progress in GO-based membranes focused on adjusting membrane structure and enhancing their mechanical strength as well as structural stability in aqueous environment is highlighted and discussed in detail. First, we briefly reviewed the preparation and characterization of GO. Then, the preparation method, characterization, and type of GO-based membrane are summarized. Finally, the advancements of GO-based membrane in adjusting membrane structure and enhancing their mechanical strength, as well as structural stability in aqueous environment, are particularly discussed. This review hopefully provides a new avenue for the innovative developments of GO-based membrane in various membrane applications. Full article
(This article belongs to the Special Issue Novel Membrane Materials)
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4892 KiB  
Review
Fabrication and Water Treatment Application of Carbon Nanotubes (CNTs)-Based Composite Membranes: A Review
by Lining Ma, Xinfa Dong, Mingliang Chen, Li Zhu, Chaoxian Wang, Fenglin Yang and Yingchao Dong
Membranes 2017, 7(1), 16; https://doi.org/10.3390/membranes7010016 - 18 Mar 2017
Cited by 183 | Viewed by 15541
Abstract
Membrane separation technology is widely explored for various applications, such as water desalination and wastewater treatment, which can alleviate the global issue of fresh water scarcity. Specifically, carbon nanotubes (CNTs)-based composite membranes are increasingly of interest due to the combined merits of CNTs [...] Read more.
Membrane separation technology is widely explored for various applications, such as water desalination and wastewater treatment, which can alleviate the global issue of fresh water scarcity. Specifically, carbon nanotubes (CNTs)-based composite membranes are increasingly of interest due to the combined merits of CNTs and membrane separation, offering enhanced membrane properties. This article first briefly discusses fabrication and growth mechanisms, characterization and functionalization techniques of CNTs, and then reviews the fabrication methods for CNTs-based composite membranes in detail. The applications of CNTs-based composite membranes in water treatment are comprehensively reviewed, including seawater or brine desalination, oil-water separation, removal of heavy metal ions and emerging pollutants as well as membrane separation coupled with assistant techniques. Furthermore, the future direction and perspective for CNTs-based composite membranes are also briefly outlined. Full article
(This article belongs to the Special Issue Novel Membrane Materials)
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