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Please use this identifier to cite or link to this item: http://173.208.131.244:9060/xmlui/handle/123456789/1464
Title: Gamma irradiation-induced phase transitions of boron nitride nanoparticles
Authors: Khan, Hamdullah
Ahmad, Ishaq
Hussain, S S
Iqbal, Javed
Ikram, M
Malik, Maaza
khan, M Zubair
Ilyas, S
Jan, Tariq
Keywords: Natural Science
Materials Research Express Paper Gamma irradiation
Issue Date: 23-Oct-2019
Publisher: Institute of Physics (IOP)
Abstract: Recently different methods are explored to synthesize suparhard orthorhombic boron nitride (o-BN) nanomaterials which have a wide range of industrial applications in the sensors, fiters, battery, biological applications and deep ultraviolet light emitting diodes. In this research work, a simple method is reported to synthesis of cubic boron nitride nanoparticles (c-BNNPs) via gamma irradiation induced phase transition of hexagonal boron nitride nanoparticles (h-BNNPs). X Ray Diffraction (XRD) and Raman Spectroscopy results confirmed the phase transition of h-BNNPs to o-BNNPs at the dose of 21 kGy. At the dose of 24 kGy, high resolution transmission electron microscopy (HRTEM) results showed that phase of hexagonal boron nitride nanoparticles (h-BNNPs) are transformed to B2O3 whereas at lower dose (18 kGy), coalescence of hexagonal boron nitride nanoparticles (h-BNNPs) is observed through high resolution transmission electron microscopy (HRTEM) results. X-rays diffractions (XRD) results showed that grain size of hexagonal boron nitride nanoparticles (h- BNNPs) is increased. Mechanism of phase transition and coalescence of hexagonal boron nitride nanoparticles (h-BNNPs) are explained via high energy and short wavelength gamma radiations act on B-N covalent bond isotopically.
URI: http://173.208.131.244:9060/xmlui/handle/123456789/1464
ISSN: 6 1150b2
Appears in Collections:Journals

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