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2D boron nitride nanosheets (BNNS) prepared by high-pressure homogenisation : structure and morphology

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Guerra, Valentina, Wan, Chaoying, Degirmenci, Volkan, Sloan, Jeremy, Presvytis, Dimitris and McNally, Tony (2018) 2D boron nitride nanosheets (BNNS) prepared by high-pressure homogenisation : structure and morphology. Nanoscale, 10 (41). 19469-19477 . doi:10.1039/C8NR06429F ISSN 2040-3364.

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Official URL: http://dx.doi.org/10.1039/C8NR06429F

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Abstract

2D Boron Nitride Nano-sheets (BNNS) were prepared using a high-pressure homogenisation process to exfoliate bulk hexagonal boron nitride (h-BN). The effectiveness of this process was studied by characterising bulk h-BN and BNNS post-processing using numerous techniques. The BNNS produced was composed of a mixture of sheets having lengths on the nanometre (nm) scale, but lateral thicknesses on the micron (μm) length scale. The product was a macro-porous material containing slit-like pores with a surface area of 170 m2 g−1. It had a polycrystalline structure with d002 = 0.335 nm and L002 = 2 nm. From the sharp E2g peak in the Raman spectrum at 1360 cm−1 (FWHM = 12.5 cm−1), the sheets had a low defect density and were highly exfoliated. X-Ray photoelectron spectroscopy (XPS) studies detected B–OH and N–H groups on the BNNS surface and the presence of residual surfactant. Contact angle measurements (60° ± 3° (0 s); 40° ± 2° (10 s)) confirmed a hydrophilic surface. The BNNS was thermally stable under oxidative conditions up to 323 °C.

Item Type: Journal Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Faculty of Science, Engineering and Medicine > Science > Physics
Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Nanostructured materials, Boron nitride, Raman spectroscopy -- Industrial applications
Journal or Publication Title: Nanoscale
Publisher: Royal Society of Chemistry
ISSN: 2040-3364
Official Date: 8 October 2018
Dates:
DateEvent
8 October 2018Published
7 October 2018Accepted
Volume: 10
Number: 41
Page Range: 19469-19477
DOI: 10.1039/C8NR06429F
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 9 November 2018
Date of first compliant Open Access: 8 October 2019
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIED[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
UNSPECIFIEDThomas Swan & CoUNSPECIFIED

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