Fenton induced microdefects enable fast water transfer of graphene oxide membrane for efficient water purification
File(s)
Accepted version
Author(s)
Tian, Long
Graham, Nigel JD
Tian, Xiangyu
Liu, Ting
Yu, Wenzheng
Type
Journal Article
Abstract
Recent studies have highlighted the great potential of graphene oxide (GO) as the basis of advanced separation membranes for water-related environmental applications. However, pristine GO membranes usually suffer from low water permeability and inadequate stability that limit their further progress and application in practice. Here, a novel approach involving intra-defect construction, combined with cation cross-linking, was used to prepare highly permeable and stable GO membranes for water purification. The preparation was based on Fenton system to achieve enhanced regulation of the membrane structure. The in-situ generated Fe(III) and reaction products (hydroxyl radical and Fe-based nanoparticles) enabled the formation of tightly cross-linked GO nanosheets and favorable pinholes and void defects within the membrane, which stabilized the membrane structure and enhanced its permeability. The resultant membrane achieved an ultrahigh water flux (∼45 L m−2 h−1 bar−1), together with a favorable rejection of Coomassie brilliant blue dye (>91%), natural organic matter (humic acid and bovine serum albumin, >95%) and superior dye/salt selectivity. Moreover, the membrane exhibited a long-term operating stability and pressure-resistance performance. This study offers a facile and scalable method for the design of high performance GO and other two-dimensional (2D) membranes for water purification.
Date Issued
2023-06-05
Date Acceptance
2023-02-27
Citation
Journal of Membrane Science, 2023, 675
ISSN
0376-7388
Publisher
Elsevier
Journal / Book Title
Journal of Membrane Science
Volume
675
Copyright Statement
Copyright © Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000951196100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
Accelerated water transport
CHANNELS
CROSS-LINKING
Defect regulation
Engineering
Engineering, Chemical
Fenton
FRAMEWORK MEMBRANES
Graphene oxide membrane
NANOSHEETS
PERFORMANCE
PERMEABILITY
Physical Sciences
Polymer Science
REMOVAL
Science & Technology
SEPARATION
STABILITY
Technology
TECHNOLOGY
Water purification
Publication Status
Published
Article Number
121542
Date Publish Online
2023-02-28