Large-scale fabrication of boron nitride nanotubes with high purity via solid-state reaction method.
Large-scale fabrication of boron nitride nanotubes with high purity via solid-state reaction method.
复制标题
固相反应法大规模制备高纯度氮化硼纳米管
DOI：
10.1186/1556-276x-9-555
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发表时间：
2014
影响因子：
--
通讯作者：
Chen Y
中科院分区：
文献类型：
--
作者：
Pan A;Chen Y
报道了一种有效的固相反应方法，通过在氨气氛中高温退火非晶硼粉末和氯化铁（FeCl3）催化剂来大规模合成高纯度氮化硼纳米管（BNNT）。以前很少使用的FeCl3不仅可以作为催化剂，而且可以作为一种有效的转化剂，将硼粉末原位转化为氯化硼(BCl3)蒸气。纳米管呈竹子形状，平均直径约为 90 纳米。研究了合成温度对纳米管形态和产率的影响。光致发光 (PL) 测量显示纳米管在 354、423、467 和 666 nm 处的发射带。提出了气-液-固（VLS）和固-液-固（SLS）模型的组合生长机制来形成BNNT。
An effective solid-state reaction method is reported for synthesizing boron nitride nanotubes (BNNTs) in large scale and with high purity by annealing amorphous boron powder and ferric chloride (FeCl3) catalyst in ammonia atmosphere at elevated temperatures. FeCl3that has rarely been utilized before is introduced not only as a catalyst but also as an efficient transforming agent which converts boron powder into boron chloride (BCl3) vapor in situ. The nanotubes are bamboo in shape and have an average diameter of about 90 nm. The effect of synthetic temperatures on nanotube morphology and yield is investigated. The photoluminescence (PL) measurement shows emission bands of the nanotubes at 354, 423, 467, and 666 nm. A combined growth mechanism of vapor–liquid-solid (VLS) and solid–liquid-solid (SLS) model is proposed for the formation of the BNNTs.