@article{Matveev2015, 
author = {Andrei T. Matveev and Konstantin L. Firestein and Alexander E. Steinman and Andrey M. Kovalskii and Oleg I. Lebedev and Dmitry V. Shtansky and Dmitri Golberg},
title = {Boron nitride nanotube growth via boron oxide assisted chemical vapor transport-deposition process using LiNO3 as a promoter},
year = {2015},
journal = {Nano Research},
volume = {8},
number = {6},
pages = {2063-2072},
keywords = {CVD, boron nitride nanotubes, lithium nitrate, lithium borate, BNNT growth mechanism},
url = {https://www.sciopen.com/article/10.1007/s12274-015-0717-y},
doi = {10.1007/s12274-015-0717-y},
abstract = {High-purity straight and discrete multiwalled boron nitride nanotubes (BNNTs) were grown via a boron oxide vapor reaction with ammonia using LiNO3 as a promoter. Only a trace amount of boron oxide was detected as an impurity in the BNNTs by energy-dispersive X-ray (EDX) and Raman spectroscopies. Boron oxide vapor was generated from a mixture of B, FeO, and MgO powders heated to 1, 150 ℃, and it was transported to the reaction zone by flowing ammonia. Lithium nitrate was applied to the upper side of a BN bar from a water solution. The bar was placed along a temperature gradient zone in a horizontal tubular furnace. BNNTs with average diameters of 30-50 nm were mostly observed in a temperature range of 1, 280-1, 320 ℃. At higher temperatures, curled polycrystalline BN fibers appeared. Above 1, 320 ℃, the number of BNNTs drastically decreased, whereas the quantity and diameter of the fibers increased. The mechanism of BNNT and fiber growth is proposed and discussed.}
}