Nano-Composite Membranes for Environmental Application

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Environmental Nanoscience and Nanotechnology".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 3948

Special Issue Editors


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Guest Editor
GIST, School of Earth Sci & Environ. Eng., 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea
Interests: Membrane Fabrication (Thin film composite/nanocomposite) and Characterization; Membrane Module Configuration (Hollow Fiber, Spiral Wound, Plate & Frame) and Mathematical Software Simulation (Computational Fluid Dynamics); Innovative System Process Engineering; Mechanisms and Control for (Bio-)Fouling and Cleaning; Applications for Water Desalination and Renewable Energy

E-Mail Website
Guest Editor
School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Korea
Interests: graphene; battery; membrane; desalination; reverse electrodialysis
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Special Issue Information

Dear Colleagues,

The membrane is the core element and also source technology that dictates the overall performance and economics of the various separation processes. To enhance the performance and efficiency of the membrane, various attempts have been made based on materials science and system engineering in and out of academia. The recent emergence of nano-composite and its applications to membrane engineering proved the potential of the nano-composite membrane to improve performance and enable sustainable industrial growth. The nano-composite membrane has also attracted great attention in addressing growing environmental applications such as water desalination and reuse, energy production, biomedical health fields and mining of valuable elements or materials.    

The topics of interest include below membrane applications but are not limited to:

  • Synthesis and fabrication of nano-composite membrane
  • Novel membrane fabrication process
  • Membranes for desalination and water reuse
  • Membranes for the removal of heavy metals and toxic contaminants
  • Membranes for separation of oil-water
  • Biomedical health applications
  • Brine mining
  • Zero Liquid Discharge
  • Salinity gradient power
  • Membrane distillation, pervaporation

Prof. In S. Kim
Dr. Jaewon Jang
Guest Editors

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Keywords

  • Nano-composite membranes
  • membrane fabrication processes
  • membranes for desalination & water reuse
  • biomedical health applications
  • salinity gradient power
  • environmental applications

Published Papers (1 paper)

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Research

18 pages, 5010 KiB  
Article
Chemically Cross-Linked Graphene Oxide as a Selective Layer on Electrospun Polyvinyl Alcohol Nanofiber Membrane for Nanofiltration Application
by Myoung Jun Park, Grace M. Nisola, Dong Han Seo, Chen Wang, Sherub Phuntsho, Youngwoo Choo, Wook-Jin Chung and Ho Kyong Shon
Nanomaterials 2021, 11(11), 2867; https://doi.org/10.3390/nano11112867 - 27 Oct 2021
Cited by 17 | Viewed by 3207
Abstract
Graphene oxide (GO) nanosheets were utilized as a selective layer on a highly porous polyvinyl alcohol (PVA) nanofiber support via a pressure-assisted self-assembly technique to synthesize composite nanofiltration membranes. The GO layer was rendered stable by cross-linking the nanosheets (GO-to-GO) and by linking [...] Read more.
Graphene oxide (GO) nanosheets were utilized as a selective layer on a highly porous polyvinyl alcohol (PVA) nanofiber support via a pressure-assisted self-assembly technique to synthesize composite nanofiltration membranes. The GO layer was rendered stable by cross-linking the nanosheets (GO-to-GO) and by linking them onto the support surface (GO-to-PVA) using glutaraldehyde (GA). The amounts of GO and GA deposited on the PVA substrate were varied to determine the optimum nanofiltration membrane both in terms of water flux and salt rejection performances. The successful GA cross-linking of GO interlayers and GO-PVA via acetalization was confirmed by FTIR and XPS analyses, which corroborated with other characterization results from contact angle and zeta potential measurements. Morphologies of the most effective membrane (CGOPVA-50) featured a defect-free GA cross-linked GO layer with a thickness of ~67 nm. The best solute rejections of the CGOPVA-50 membrane were 91.01% for Na2SO4 (20 mM), 98.12% for Eosin Y (10 mg/L), 76.92% for Methylene blue (10 mg/L), and 49.62% for NaCl (20 mM). These findings may provide one of the promising approaches in synthesizing mechanically stable GO-based thin-film composite membranes that are effective for solute separation via nanofiltration. Full article
(This article belongs to the Special Issue Nano-Composite Membranes for Environmental Application)
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