Thorn-like BN nanostructures

Abstract

Thorn-like BN nanostructures that the nanosize hexagonal BN (h-BN) layers are randomly stacked looking like thorns were synthesized using thermal chemical vapor deposition of B/B2O3 under the flow of at 1200degreesC. They can grow self-assembled forming the rnicrosize lumps, and also deposit as sheathing layers on the pre-grown SiC nanowires with a controlled thickness in the range 20-100 nm. The spreading of the thorn-like BN layers as the sheathing layers results in a significantly enhanced surface area. 2400 m(2)/g. (C) 2004 Elsevier Ltd. All rights reserved.