Large-Scale Fabrication of Boron Nitride Nanotubes via a Facile Chemical Vapor Reaction Route and Their Cathodoluminescence Properties

• DOI: 10.1007/s11671-010-9794-8
• Publication Date: 2010-09-25T12:42:10Z
• Authors: Bo Zhong; Xiaoxiao Huang; Guangwu Wen; Hongming Yu; Xiaodong Zhang; Tao Zhang; Hongwei Bai
• Keywords: Cathodoluminescence; Nanochemistry; Ultraviolet

Abstract Cylinder- and bamboo-shaped boron nitride nanotubes (BNNTs) have been synthesized in large scale via a facile chemical vapor reaction route using ammonia borane as precursor. The structure composition of the as-synthesized BNNTs are extensively characterized by X-ray diffraction, scanning electron microscopy, high-resolution transmission selected-area diffraction. cylinder-shaped an average diameter about 100 nm length hundreds microns, while 100–500 with up to tens microns. formation mechanism has explored on basis our experimental observations growth model proposed accordingly. Ultraviolet–visible cathodoluminescence spectroscopic analyses performed BNNTs. Strong ultraviolet emissions detected both morphologies band gap around 5.82 eV nearly unaffected tube morphology. There exist two intermediate bands BNNTs, which could be distinguishably assigned structural defects impurities.