In-situ probing of the thermal treatment of h-BN towards exfoliationCitation formats

  • External authors:
  • Zhengyu Yan
  • Amor Abdelkader
  • Sarah Day
  • Chiu Tang

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In-situ probing of the thermal treatment of h-BN towards exfoliation. / Yan, Zhengyu; Abdelkader, Amor; Day, Sarah; Tang, Chiu; Casiraghi, Cinzia; Mirihanage, Wajira.

In: Nanotechnology, 26.11.2020.

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Yan, Zhengyu ; Abdelkader, Amor ; Day, Sarah ; Tang, Chiu ; Casiraghi, Cinzia ; Mirihanage, Wajira. / In-situ probing of the thermal treatment of h-BN towards exfoliation. In: Nanotechnology. 2020.

Bibtex

@article{eaa90170d12c4632841ae571b056dde7,
title = "In-situ probing of the thermal treatment of h-BN towards exfoliation",
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.",
author = "Zhengyu Yan and Amor Abdelkader and Sarah Day and Chiu Tang and Cinzia Casiraghi and Wajira Mirihanage",
year = "2020",
month = nov,
day = "26",
doi = "10.1088/1361-6528/abce2e",
language = "English",
journal = "Nanotechnology",
issn = "0957-4484",
publisher = "IOP Publishing Ltd",

}

RIS

TY - JOUR

T1 - In-situ probing of the thermal treatment of h-BN towards exfoliation

AU - Yan, Zhengyu

AU - Abdelkader, Amor

AU - Day, Sarah

AU - Tang, Chiu

AU - Casiraghi, Cinzia

AU - Mirihanage, Wajira

PY - 2020/11/26

Y1 - 2020/11/26

N2 - 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.

AB - 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.

U2 - 10.1088/1361-6528/abce2e

DO - 10.1088/1361-6528/abce2e

M3 - Article

JO - Nanotechnology

JF - Nanotechnology

SN - 0957-4484

ER -