Submillimeter-Long WS2 Nanotubes: The Pathway to Inorganic Buckypaper
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Date
2023-10-08
Authors
Kundrát, Vojtěch
Rosentveig, Rita
Bukvišová, Kristýna
Citterberg, Daniel
Kolíbal, Miroslav
Keren, Shachar
Pinkas, Iddo
yaffe, Omer
Zak, Alla
Tenne, Reshef
0000-0001-8530-8298Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society
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Abstract
WS2 nanotubes present many new technologies under development, including reinforced biocompatible polymers, membranes, photovoltaic-based memories, ferroelectric devices, etc. These technologies depend on the aspect ratio (length/diameter) of the nanotubes, which was limited to 100 or so. A new synthetic technique is presented, resulting in WS2 nanotubes a few hundred micrometers long and diameters below 50 nm (aspect ratios of 2000-5000) in high yields. Preliminary investigation into the mechanistic aspects of the two-step synthesis reveals that W5O14 nanowhisker intermediates are formed in the first step of the reaction instead of the ubiquitous W18O49 nanowhiskers used in the previous syntheses. The electrical and photoluminescence properties of the long nanotubes were studied. WS2 nanotube-based paper-like material was prepared via a wet-laying process, which could not be realized with the 10 mu m long WS2 nanotubes. Ultrafiltration of gold nanoparticles using the nanotube-paper membrane was demonstrated.
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Citation
Nano Letters. 2023, vol. 23, issue 22, p. 10259-10266.
https://pubs.acs.org/doi/10.1021/acs.nanolett.3c02783
https://pubs.acs.org/doi/10.1021/acs.nanolett.3c02783
Document type
Peer-reviewed
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Published version
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Language of document
en