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Highly Stable and Antibacterial Two‐Dimensional Tungsten Disulfide Lamellar Membrane for Water Filtration
Author(s) -
Cheng Peng,
Chen Yan,
Yan Xi,
Wang Yanjie,
Lang WanZhong
Publication year - 2019
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201802235
Subject(s) - laminar flow , membrane , filtration (mathematics) , lamellar structure , tungsten disulfide , biofouling , chemical engineering , materials science , chemistry , chromatography , composite material , thermodynamics , biochemistry , physics , statistics , mathematics , engineering
Two‐dimensional (2D) lamellar membranes consisting of restacked WS 2 nanosheets have shown excellent separation properties for water filtration. The stability, antifouling properties, and antibacterial activities of the WS 2 laminar membranes were investigated for practical application. We discovered that the separation properties of the WS 2 laminar membranes changed slightly after soaking in water for 28 days as well as that of a 45 h‐cross‐flow filtration, demonstrating an extraordinary operational stability of the WS 2 laminar membranes. The remarkable stability is related to the dominant van der Waals interactions between WS 2 nanosheets. In addition, the WS 2 laminar membranes exhibited excellent antibacterial properties against S. aureus and E. coli with antibacterial rates of 91.3 % and 89.7 %, respectively. These properties of the WS 2 laminar membranes make them promising candidates for application in water filtration.