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Efficient Antibacterial Membrane based on Two-Dimensional Ti 3 C 2 T x (MXene) Nanosheets
Journal article   Open access   Peer reviewed

Efficient Antibacterial Membrane based on Two-Dimensional Ti 3 C 2 T x (MXene) Nanosheets

Kashif Rasool, Khaled A Mahmoud, Daniel J Johnson, Mohamed Helal, Golibjon R Berdiyorov and Yury Gogotsi
Scientific reports, v 7(1), p1598
09 May 2017
PMID: 28487521
url
https://doi.org/10.1038/s41598-017-01714-3View
Published, Version of Record (VoR)CC BY V4.0 Open

Abstract

Titanium - pharmacology Microbial Viability - drug effects Escherichia coli - drug effects Membranes, Artificial Microbial Sensitivity Tests Bacillus subtilis - growth & development Polyvinyls Microscopy, Atomic Force Nanostructures - chemistry Anti-Bacterial Agents - pharmacology Cell Membrane - metabolism Escherichia coli - growth & development Bacillus subtilis - ultrastructure Escherichia coli - ultrastructure Cell Membrane - drug effects Bacillus subtilis - drug effects ESI Highly Cited Paper (Incites)
Advanced membranes that enable ultrafast water flux while demonstrating anti-biofouling characteristics can facilitate sustainable water/wastewater treatment processes. MXenes, two-dimensional (2D) metal carbides and nitrides, have attracted attention for applications in water/wastewater treatment. In this work, we reported the antibacterial properties of micrometer-thick titanium carbide (Ti C T ) MXene membranes prepared by filtration on a polyvinylidene fluoride (PVDF) support. The bactericidal properties of Ti C T modified membranes were tested against Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis) by bacterial growth on the membrane surface and its exposure to bacterial suspensions. The antibacterial rate of fresh Ti C T MXene membranes reaches more than 73% against B. subtilis and 67% against E. coli as compared with that of control PVDF, while aged Ti C T membrane showed over 99% growth inhibition of both bacteria under same conditions. Flow cytometry showed about 70% population of dead and compromised cells after 24 h of exposure of both bacterial strains. The damage of the cell surfaces was also revealed by scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis, respectively. The demonstrated antibacterial activity of MXene coated membranes against common waterborne bacteria, promotes their potential application as anti-biofouling membrane in water and wastewater treatment processes.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Materials Science, Multidisciplinary
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