Vapour-phase reduction and the synthesis of boron-based ceramic phases

Preparation and photoluminescent investigation of h-BN-like layered material B4CN4

“…However, this method did not provide any ternary compound in the temperature range 1600-2000 1C within 3 h [12]. Yoon et al [13] claimed that the direct nitridation of B 4 C results in h-BN and graphite. Therefore, the nitridation product of B 4 C powder at high temperature has not been clear so far.…”

Microwave-assisted rapid synthesis of graphene-analogue hexagonal boron nitride (h-BN) nanosheets and their application for the ultrafast and selective adsorption of cationic dyes from aqueous solutions

“…[27][28][29] To date, many methods have been developed for the synthesis of hexagonal BN including classical high-temperature routes (e.g., reaction of boron oxide and ammonia, direct nitridation of boron with N 2 at 1400-1900 C and carbothermal reduction and nitridation of boron oxide at 1500 C), vapor deposition methods (e.g., reaction of boron trichloride and ammonia), condensed-phase pyrolysis techniques (e.g., thermal decomposition of borazene or bisborazinylamine), solid-state metathesis, and pyrolysis and combustion synthesis. [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] Most of these methods have to be carried out under high temperature or high N 2 pressure and require long processing times. Furthermore, many of them also involve the use of complicated expensive instruments and some of them suffer from low production yields (less than 30%).…”

Thermal properties and formation mechanism of h‐BN nanoneedles synthesized via carbothermic reduction reaction

“…Boron element form BN in nitrogen gas flow. Production of BN may be occurred directly via the carbothermic reduction reaction by the reaction of boron oxide with carbon in nitrogen gas flow without forming boron carbide 13,15 simplified according to the following reaction 4:…”