In situ probing of the thermal treatment of h-BN towards exfoliation
Authors: Yan, Z., Abdelkader, A., Day, S., Tang, C., Casiraghi, C. and Mirihanage, W.
Journal: Nanotechnology
Volume: 32
Issue: 10
eISSN: 1361-6528
ISSN: 0957-4484
DOI: 10.1088/1361-6528/abce2e
Abstract:Two-dimensional (2D) hexagonal boron nitride (h-BN) is becoming increasingly interesting for wider engineering applications. Thermal exfoliation is being suggested as a facile technology to produce large quantities of 2D h-BN. Further optimization of the process requires fundamental understanding of the exfoliation mechanism, which is hardly realized by ex situ techniques. In this study, in situ synchrotron x-ray powder diffraction experiments are conducted while heat treating bulk h-BN up to 1273 K. During the heating process, linear expansion of c-axis is observed and the contraction of a-axis up to around 750 K is consistent with previous research. However, a changing behavior from contraction to expansion in a-axis direction is newly observed when heating over 750 K. With the consideration of previous thermally oxidation studies, a hypothesis of thermal assisted exfoliation with oxygen interstitial and substitution of nitrogen at high temperature is proposed.
https://eprints.bournemouth.ac.uk/34922/
Source: Scopus
In situ probing of the thermal treatment of h-BN towards exfoliation.
Authors: Yan, Z., Abdelkader, A., Day, S., Tang, C., Casiraghi, C. and Mirihanage, W.
Journal: Nanotechnology
Volume: 32
Issue: 10
Pages: 105704
eISSN: 1361-6528
DOI: 10.1088/1361-6528/abce2e
Abstract:Two-dimensional (2D) hexagonal boron nitride (h-BN) is becoming increasingly interesting for wider engineering applications. Thermal exfoliation is being suggested as a facile technology to produce large quantities of 2D h-BN. Further optimization of the process requires fundamental understanding of the exfoliation mechanism, which is hardly realized by ex situ techniques. In this study, in situ synchrotron x-ray powder diffraction experiments are conducted while heat treating bulk h-BN up to 1273 K. During the heating process, linear expansion of c-axis is observed and the contraction of a-axis up to around 750 K is consistent with previous research. However, a changing behavior from contraction to expansion in a-axis direction is newly observed when heating over 750 K. With the consideration of previous thermally oxidation studies, a hypothesis of thermal assisted exfoliation with oxygen interstitial and substitution of nitrogen at high temperature is proposed.
https://eprints.bournemouth.ac.uk/34922/
Source: PubMed
<i>In situ</i> probing of the thermal treatment of h-BN towards exfoliation
Authors: Yan, Z., Abdelkader, A., Day, S., Tang, C., Casiraghi, C. and Mirihanage, W.
Journal: NANOTECHNOLOGY
Volume: 32
Issue: 10
eISSN: 1361-6528
ISSN: 0957-4484
DOI: 10.1088/1361-6528/abce2e
https://eprints.bournemouth.ac.uk/34922/
Source: Web of Science (Lite)
In situ probing of the thermal treatment of h-BN towards exfoliation.
Authors: Yan, Z., Abdelkader, A., Day, S., Tang, C., Casiraghi, C. and Mirihanage, W.
Journal: Nanotechnology
Volume: 32
Issue: 10
Pages: 105704
eISSN: 1361-6528
ISSN: 0957-4484
DOI: 10.1088/1361-6528/abce2e
Abstract:Two-dimensional (2D) hexagonal boron nitride (h-BN) is becoming increasingly interesting for wider engineering applications. Thermal exfoliation is being suggested as a facile technology to produce large quantities of 2D h-BN. Further optimization of the process requires fundamental understanding of the exfoliation mechanism, which is hardly realized by ex situ techniques. In this study, in situ synchrotron x-ray powder diffraction experiments are conducted while heat treating bulk h-BN up to 1273 K. During the heating process, linear expansion of c-axis is observed and the contraction of a-axis up to around 750 K is consistent with previous research. However, a changing behavior from contraction to expansion in a-axis direction is newly observed when heating over 750 K. With the consideration of previous thermally oxidation studies, a hypothesis of thermal assisted exfoliation with oxygen interstitial and substitution of nitrogen at high temperature is proposed.
https://eprints.bournemouth.ac.uk/34922/
Source: Europe PubMed Central
In-situ probing of the thermal treatment of h-BN towards exfoliation
Authors: Yan, Z., Abdelkader, A.M., Day, S., Tang, C., Casiraghi, C. and Mirihanage, W.
Journal: Nanotechnology
Volume: 32
Issue: 10
ISSN: 0957-4484
Abstract:Two-dimensional (2D) hexagonal boron nitride (h-BN) is becoming increasingly interesting for wider engineering applications. Thermal exfoliation is being suggested as a facile technology to produce large quantities of 2D h-BN. Further optimization of the process requires fundamental understanding of the exfoliation mechanism, which is hardly realized by ex-situ techniques. In this study, time resolved in-situ synchrotron X-ray powder diffraction experiments are conducted while heat treating bulk h-BN up to 1273 K. During the heating process, linear expansion of c-axis is observed and the contraction of a-axis up to around 750 K is consistent with previous research. However, a changing behavior from contraction to expansion in a- axis direction is newly observed when heating over 750 K. With the consideration of previous thermally oxidation studies, a hypothesis of thermal assisted exfoliation with oxygen interstitial and substitution of nitrogen at high temperature is proposed.
https://eprints.bournemouth.ac.uk/34922/
Source: BURO EPrints