Characterization of boron nitride nanosheets synthesized by boron-ammonia reaction |
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Affiliation: | 1. Department of Metallurgy & Materials Engineering, University of the Punjab, Lahore, Pakistan;2. Hybrid Materials Centre (HMC), Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, North Korea |
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Abstract: | Boron nitride nanosheets (BNNS) with thickness 5–11 nm were successfully produced when pure boron powder (1–2 μm) interacted with ammonia gas in chemical vapour deposition set up. Under the optimized parameters, at 1200 °C and for uninterrupted 1 h of reaction duration, 2D BNNS with thickness of ca.11 nm were synthesized. BNNS were characterized by X-ray diffraction (XRD) for crystal structure, scanning electron microscopy for dimensions and morphology, energy dispersive X-ray analysis for chemical composition and Fourier transform infrared spectroscopy for sp2 BN bond detection. The thickness of BNNS determined from both XRD data (using Scherrer equation) and atomic force microscopic analysis confirmed the stated product thickness. The BNNS obtained at 1200 °C had high crystallinity, purity and yield. |
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Keywords: | Boron nitride nanosheets Chemical vapour deposition X-ray diffraction Scanning electron microscopy Atomic force microscopy |
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