Magnesium diboride (MgB2): An effective and novel precursor for the synthesis of vertically aligned BNNTs
Document Type
Article
Publication Date
1-1-2018
Abstract
Vertically aligned Boron nitride nanotubes (BNNTs) have exceptional electrical, mechanical and thermal properties suitable for its potential applications without any further purification. However, the synthesis of aligned BNNTs via previously reported techniques is not only complicated, lengthy and misleading but also result in useless impurities in the final product. Here, we report Magnesium diboride (MgB2) as an effective and novel precursor for the synthesis of vertically aligned BNNTs directly on SiO2 substrate at 1000 °C. Magnesium (Mg) from MgB2 in partially melted form diffuses on SiO2 substrate whereas the adsorbed Boron with Mg reacts with Nitrogen from decomposed ammonia and synthesized vertically aligned BNNTs. The morphology, alignment, structure and compositions of the as-synthesized BNNTs are studied via field emission scanning electron microscope, high resolution transmission electron microscope, energy dispersive x-ray spectroscopy, x-ray diffraction, Raman spectroscopy and Fourier transform infrared spectroscopy.
Keywords
MgB2, Precursor, Synthesis, Vertically aligned, BNNTs
Divisions
fac_eng,GEOLOGY,PHYSICS
Funders
Start up Research Grant (SRGP) from Higher Education Commission of Pakistan under project number 1400,University of Malaya , 50603 Kuala Lumpur Malaysia, Project Number: RG375-15AFR
Publication Title
Materials Research Bulletin
Volume
98
Publisher
Elsevier