Submillimeter-Long WS2 Nanotubes: The Pathway to Inorganic Buckypaper

Vojtěch Kundrát, Rita Rosentsveig, Kristýna Bukvišová, Daniel Citterberg, Miroslav Kolíbal, Shachar Keren, Iddo Pinkas, Omer Yaffe, Alla Zak, Reshef Tenne

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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 μm long WS2 nanotubes. Ultrafiltration of gold nanoparticles using the nanotube-paper membrane was demonstrated.

Original languageEnglish
Pages (from-to)10259-10266
Number of pages8
JournalNano Letters
Volume23
Issue number22
DOIs
StatePublished - 22 Nov 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023 The Authors. Published by American Chemical Society

Keywords

  • buckypaper
  • felt
  • growth
  • sulfidation
  • tungsten disulfide nanotubes
  • tungsten suboxide nanowhiskers
  • wet-laying

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