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

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)
5 Downloads (Pure)


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
Issue number38
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.


Dive into the research topics of 'Inverted vortex fluidic exfoliation and scrolling of hexagonal-boron nitride'. Together they form a unique fingerprint.

Cite this