Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 20, Issue 18, Pages 3736-3742Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b920881j
Keywords
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Funding
- Natural Science Foundation of China (NSFC) [50672048, 50721002, 50990061]
- Foundation of Shandong Science & Technology Council [2006GG2203039]
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Nearly monodisperse hexagonal boron nitride (hBN) nanoparticles with low agglomeration degree were successfully synthesized via a modified solid state metathesis reaction route. It was found that sulfur was essential for preparing monodisperse hBN nanoparticles at 250 degrees C. However, when the temperature exceeded 300 degrees C, hBN nanoparticles with uniform size could also be quickly synthesized even without sulfur, and the yield was up to similar to 65%. Furthermore, the experimental results were properly explained by a fast reaction and explosive dispersion mechanism, which was proposed according to the exothermal reaction between sulfur and NaN(3) and the explosive decomposition of the latter. Besides, the good thermal stability and high specific surface area made the as-prepared hBN nanoparticles applicable in many areas.
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