Abstract
Boron nitride nanotubes (BNNTs) possess many fascinating properties that make them promising for various applications in microelectronics, biomedicine and coating. In this work, BNNTs were synthesized by a ball milling-annealing method. Boron powder was milled with promoters, lead(II) oxide (PbO) and iron(III) nitrate nonahydrate (Fe(NO3)3⋅9H2O), under the N2 gas environment to prepare a precursor. Then, bamboo-like and cylindrical BNNTs were synthesized by annealing the precursor at 1150 °C under the NH3 gas environment. The phase of the BNNTs was identified to be hexagonal BN by X-ray diffractometry, Raman spectroscopy and transmission electron microscopy. The effect of the promoter content in the precursor on the synthesis of the BNNTs was investigated. When the mass ratio of B:PbO:Fe(NO3)3⋅9H2O was 1:1:1, bamboo-like and cylindrical BNNTs with a diameter of 60–500 nm, uniform composition and polycrystalline microstructure were obtained.
Original language | English |
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Article number | 114788 |
Number of pages | 7 |
Journal | Physica E: Low-Dimensional Systems and Nanostructures |
Volume | 133 |
Early online date | 23 Apr 2021 |
DOIs | |
Publication status | Published - Sept 2021 |
Externally published | Yes |
Funding
This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51572149 and 51788104 ), Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, and National Key Research and Development Program of China (Grant No. 2016YFA0201003 ).
Keywords
- Annealing
- Ball milling
- Boron nitride nanotube
- Iron nitrate nonahydrate
- Lead oxide