High permeability sub-nanometre sieve composite MoS2 membranes
Name
s41467-020-16577-y.pdf
Description
Published version
Size
1.3 MB
Format
Adobe PDF
Checksum (MD5)
10d089348342f323c128388d2833a4a1
Author(s)
Sapkota, Bedanga
Liang, Wentao
VahidMohammadi, Armin
Karnik, Rohit
Noy, Aleksandr
Wanunu, Meni
Date Issued
June 2020
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Citation
Sapkota, Bedanga et al. "High permeability sub-nanometre sieve composite MoS2 membranes." Nature Communications 11, 1 (June 2020): 2747 © 2020 The Author(s).
Version
Final published version
Abstract
Two-dimensional membranes have gained enormous interest due to their potential to deliver precision filtration of species with performance that can challenge current desalination membrane platforms. Molybdenum disulfide (MoS2) laminar membranes have recently demonstrated superior stability in aqueous environment to their extensively-studied analogs graphene-based membranes; however, challenges such as low ion rejection for high salinity water, low water flux, and low stability over time delay their potential adoption as a viable technology. Here, we report composite laminate multilayer MoS2 membranes with stacked heterodimensional one- to two-layer-thick porous nanosheets and nanodisks. These membranes have a multimodal porous network structure with tunable surface charge, pore size, and interlayer spacing. In forward osmosis, our membranes reject more than 99% of salts at high salinities and, in reverse osmosis, small-molecule organic dyes and salts are efficiently filtered. Finally, our membranes stably operate for over a month, implying their potential for use in commercial water purification applications.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/s41467-020-16577-y
