Preparation of Boron Nitride Flakes by a Simple Powder Reaction
Boron nitride (BN) with flake-like morphology has been synthesized by reacting powder H3BO3, Mg, and NH4Cl. X-ray diffraction patterns show that the sample has hexagonal phase with lattice parameters a=2.506 and c=6.692 Å. Transmission electron microscopy and field emission scanning electron microscopy indicate that the as-synthesized product is pure flake with a mean size of about 100 nm width and 600 nm length. X-ray photoelectron spectra give an average B/N atomic ratio of 0.98:1. Fourier transformation infrared spectroscopy has a strong B–N absorption at 1376 and 814 cm−1.
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Document Type: Research Article
Affiliations: College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
Publication date: 2008-07-01