Synthesis of highly crystalline rhombohedral BN triangular nanoplates via a convenient solid state reaction

Highly crystalline rhombohedral boron nitride (r-BN) with regular triangular shapes were synthesized on a large scale in a stainless steel autoclave using B2O3 and NaNH2 as reactants at 600 °C for 6 h. The as-prepared BN triangular nanoplates have an average edge length of 400 nm and the thickness of about 60 nm. The photoluminescence measurements reveal that the r-BN products show strong yellow-green emission. The as-prepared r-BN has potential optical and optoelectronic applications in high temperature devices due to its excellent thermal stability and anti-oxidation properties.

Graphical abstractRhombohedral BN triangular nanoplates were synthesized at 600 °C. The products exhibit excellent luminescence, thermal stability and anti-oxidation properties; they are expected to become good candidates for optical and optoelectronic devices.Figure optionsDownload full-size imageDownload as PowerPoint slide