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Synthesis and morphology control of nanocrystalline boron nitride

Authors:	Liang Shi Yunle Gu Yitai Qian Zeheng Yang

Institution:	^a Structure Research Laboratory and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China ^b Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China

Abstract:	Nanocrystalline boron nitride (BN) with needle-like and hollow spherical morphology has been synthesized by nitriding of MgB₂ with NH₄Cl and NH₄Cl-NaN₃, respectively. The amount of NaN₃ has an obvious effect on the size of the hollow spheres. The samples were characterized by X-ray powder diffraction, Fourier transformation infrared spectroscopy, X-ray photoelectron spectra, and transmission electron microscopy. The possible mechanism of morphology control is also discussed.

Keywords:	Chemical synthesis Hexagonal boron nitride Morphology control Characterization
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