Model of Reactions for the Synthesis of Turbostratic Boron Nitride Nanoparticles from Urea

A chemical model for the formation of nanosized turbostratic boron nitride powder from urea is proposed. The mechanism is based on the interaction of metaborate acid O=B—OH with urea (NH 2 ) 2 CO. When OH groups are replaced by NH 2 groups, H 2 O and CO 2 are released. Metaboryl amide O=B—NH 2 forme...

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Bibliographic Details
Published in:Powder metallurgy and metal ceramics 2017-11, Vol.56 (7-8), p.445-447
Main Authors: Garbuz, V. V., Petrova, V. A., Suvorova, L. S., Silinska, T. A., Kuzmenko, L. M.
Format: Article
Language:English
Subjects:
Borates
Boron
Boron compounds
Boron nitride
Carbon dioxide
Ceramics
Characterization and Evaluation of Materials
Chemical synthesis
Chemistry and Materials Science
Composites
Dehydration
Glass
Materials Science
Metallic Materials
Nanostructured Materials
Natural Materials
Organic chemistry
Silicones
Urea
Ureas
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Summary:A chemical model for the formation of nanosized turbostratic boron nitride powder from urea is proposed. The mechanism is based on the interaction of metaborate acid O=B—OH with urea (NH 2 ) 2 CO. When OH groups are replaced by NH 2 groups, H 2 O and CO 2 are released. Metaboryl amide O=B—NH 2 formed in the replacement process is studied. It is found that dehydration of the compound releasing >B—N< radicals promotes the subsequent formation of turbostratic boron nitride.
ISSN:1068-1302
1573-9066
DOI:10.1007/s11106-017-9914-4