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Synthesis of boron nitride nanotubes, bamboos and nanowires
journal contributionposted on 01.05.2008, 00:00 authored by Luhua LiLuhua Li, C P Li, Ying (Ian) ChenYing (Ian) Chen
Boron nitride nanotubes and nanowires in high purity and large quantity have been produced using an improved ball-milling and annealing method. Boron powder was first ball milled to produce nanosized boron particles with a metastable structure. The ball-milled sample was ultrasonicated in ethanol to break up large aggregates formed during high-energy ball milling. Isothermal annealing under controlled conditions produced nanotubes in two different structures (multi-walled cylindrical and bamboo nanotubes), as well as nanowires. The formation mechanisms of various nanostructures are discussed.