Dynamic thin film mediated slicing of boron nitride nanotubes

Ahmed Hussein Mohammed Al-Antaki, Warren D. Lawrance, Colin L. Raston

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Abstract

A method has been developed to slice boron nitride nanotubes BNNTs under continuous flow in a vortex fluidic device (VFD), along with a method to partially purify the as received BNNT containing material. The latter involves heating the BNNTs to 600 °C followed by dispersing in a 1 : 3 isopropyl alcohol (IPA) and water mixture at 100 °C. The VFD mediated slicing of the BNNTs comprises irradiating the rapidly rotating glass tube (20 mm OD) with a pulsed Nd:YAG laser. Systematically exploring the operating parameter space of the VFD established slicing of ca. 200 μm long purified BNNTs down to 340 nm to 400 nm, in ca. 53% yield, in a 1 : 1 mixture of IPA and water, in the absence of reagents/harsh chemicals, at a flow rate of 0.45 mL min-1, a concentration of 0.1 mg mL-1 BNNTs and an 8.5k rpm rotational speed, with the pulsed laser operating at 1064 nm and 250 mJ per pulse.

Original languageEnglish
Pages (from-to)4722-4728
Number of pages7
JournalNanoscale Advances
Volume1
Issue number12
DOIs
Publication statusPublished - 23 Oct 2019

Bibliographical note

Open Access article published on 23 October 2019. This article is licensed under a Creative Commons Attribution_NonCommercial 3.0 Unported Licence (CC BY-NC)

Keywords

  • Boron nitride nanotubes
  • Tubular nanostructures
  • Vortex fluidic device

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