Inverted vortex fluidic exfoliation and scrolling of hexagonal-boron nitride

Ahmed Hussein Mohammed Al-Antaki, Xuan Luo, Thaar M.D. Alharbi, David P. Harvey, Scott Pye, Jin Zou, Warren Lawrance, Colin L. Raston

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4 Citations (Scopus)

Abstract

Exfoliation or scrolling of hexagonal boron nitride (h-BN) occurs in a vortex fluidic device (VFD) operating under continuous flow, with a tilt angle of -45° relative to the horizontal position. This new VFD processing strategy is effective in avoiding the build-up of material that occurs when the device is operated using the conventional tilt angle of +45°, where the h-BN precursor and scrolls are centrifugally held against the wall of the tube. At a tilt angle of -45° the downward flow aided by gravity facilitates material exiting the tube with the exfoliation of h-BN and formation of h-BN scrolls then optimized by systematically varying the other VFD operating parameters, including flow rate and rotational speed, along with concentration of h-BN and the choice of solvent. Water was the most effective solvent, which enhances the green chemistry metrics of the processing.

Original languageEnglish
Pages (from-to)22074-22079
Number of pages6
JournalRSC Advances
Volume9
Issue number38
DOIs
Publication statusPublished - 16 Jul 2019

Bibliographical note

Open Access (CC BY-NC 3.0). This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.

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    Al-Antaki, A. H. M., Luo, X., Alharbi, T. M. D., Harvey, D. P., Pye, S., Zou, J., Lawrance, W., & Raston, C. L. (2019). Inverted vortex fluidic exfoliation and scrolling of hexagonal-boron nitride. RSC Advances, 9(38), 22074-22079. https://doi.org/10.1039/c9ra03970h