High shear in situ exfoliation of 2D gallium oxide sheets from centrifugally derived thin films of liquid gallium

Kasturi Vimalanathan, Timotheos Palmer, Zoe Gardner, Irene Ling, Soraya Rahpeima, Sait Elmas, Jason R. Gascooke, Christopher T. Gibson, Qiang Sun, Jin Zou, Mats R. Andersson, Nadim Darwish, Colin L. Raston

Research output: Contribution to journalArticlepeer-review

9 Downloads (Pure)

Abstract

A diversity of two-dimensional nanomaterials has recently emerged with recent attention turning to the post-transition metal elements, in particular material derived from liquid metals and eutectic melts below 330 °C where processing is more flexible and in the temperature regime suitable for industry. This has been explored for liquid gallium using an angled vortex fluidic device (VFD) to fabricate ultrathin gallium oxide (Ga2O3) sheets under continuous flow conditions. We have established the nanosheets to form highly insulating material and have electrocatalytic activity for hydrogen evolution, with a Tafel slope of 39 mV dec-1 revealing promoting effects of the surface oxidation (passivation layer).

Original languageEnglish
Pages (from-to)5785-5792
Number of pages8
JournalNanoscale Advances
Volume3
Issue number20
DOIs
Publication statusPublished - 21 Oct 2021

Keywords

  • nanomaterials
  • metal elements
  • liquid metals
  • electrocatalytic
  • hydrogen

Fingerprint

Dive into the research topics of 'High shear <i>in situ</i> exfoliation of 2D gallium oxide sheets from centrifugally derived thin films of liquid gallium'. Together they form a unique fingerprint.

Cite this