抄録
With the excellent properties such as low density, high melting point, chemical inertness and high thermal conductivity, BN nanotubes have long know to be a coating materials for easily oxidized metal or ceramic nanowires. Using BN nanotubes as a chemical reactors has been expected to be as an effective method in the synthesis of one-dimensional nanowires. The difficulty for synthesizing the composite materials mainly result from the poor wetting properties of BN nanotubes. We have been working in the synthesis and properities of BN-based composite one-dimensional nanomaterials, and an in-situ filled synthesis of BN nanotubes with metals or ceramics has been successfully obtained within the framework of vapor-liquid-solid growth mechanism. To data, SiC, MgO, GaN, Fe, Ni, and NiSi2 filled BN nanotubes has been formed. Extensive investigations confirm the nature of the one-dimensional reactor: crystallization of liquid materials in BN nanotubes are strongly confined by nanotube geometry.
