MODEL OF REACTIONS FORMING TURBOSTRATIC BORON NITRIDE NANOPARTICLES OF CARBAMIDE ORIGIN

Abstract

A chemical model for the formation of nanoparticles of turbostratic BN powder obtained by carbamide synthesis is proposed. The mechanism is based on the interaction of meta-borate acid O=B—OH with carbamide (NH₂)₂CO. In the exchange of OH groups to NH₂ groups, H₂O and CO₂ are released. The metaboryl-amide O=B—NH₂ formed in such exchange, is studied. It is found that the dehydration of the compound releasing >B—N< radicals promotes the subsequent formation of turbostratic BN.