Simple synthesis of mesoporous boron nitride with strong cathodoluminescence emission |
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Authors: | Xiang-Lin Meng Jian-Qiang Bi |
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Institution: | Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, PR China |
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Abstract: | Mesoporous BN was prepared at 550 °C for 10 h or so via a simple reaction between NaBH4 and CO(NH2)2. X-ray diffraction demonstrates the formation of t-BN with lattice constants a=2.46 and c=6.67 Å. High-resolution transmission electron microscopy displays a lot of porous films in the product, which possesses a high surface area of 219 m2 g−1 and a pore size primarily around 3.8 nm tested by nitrogen adsorption-desorption method. The mesoporous BN exhibits a strong luminescence emission around 3.41 eV in the cathodoluminescence spectra, a high stability in both morphology and structure, and good oxidation resistance up to 800 °C. The byproducts generated during the reaction are responsible for the formation of the mesoporous BN. |
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Keywords: | Boron nitride Nanostructure Density functional theory |
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