Abstract: An effective solid-state reaction method is reported for synthesizing boron carbonitride nanotubes (BCNNTs) with bamboo-like structure in large scale by using amorphous boron powder and ferric chloride (FeCl2) catalyst in absolute ethyl alcohol and ammonia atmosphere at elevated temperatures.The products were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS).The results reveal that large quantity of BCN nanotubes was synthesized and the diameter of the nanotubes ranged from 60 to 90 nm.The nanotubes are composed of elements of B, C and N, and the calculated atomic ratio of B, C and N is 9.77∶1∶8.65.The growth mechanism of BCNNTs is governed by vapor-liquid-solid (VLS) model.Moreover, the influence of reaction temperature on nanotubes was discussed.

Key words: An effective solid-state reaction method is reported for synthesizing boron carbonitride nanotubes (BCNNTs) with bamboo-like structure in large scale by using amorphous boron powder and ferric chloride (FeCl2) catalyst in absolute ethyl alcohol and ammonia atmosphere at elevated temperatures.The products were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS).The results reveal that large quantity of BCN nanotubes was synthesized and the diameter of the nanotubes ranged from 60 to 90 nm.The nanotubes are composed of elements of B, C and N, and the calculated atomic ratio of B, C and N is 9.77∶1∶8.65.The growth mechanism of BCNNTs is governed by vapor-liquid-solid (VLS) model.Moreover, the influence of reaction temperature on nanotubes was discussed.