Synthesis of Vanadium Diboride Nanoparticles via Reaction of Amorphous Boron with Vanadium in KCl and Na2B4O7 Ionic Melts

• Published in: Inorganic materials Vol. 55; no. 5; pp. 443 - 448
• Main Authors: Kravchenko, S. E., Domashnev, I. A., Dremova, N. N., Vinokurov, A. A., Shilkin, S. P.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-05-2019; Springer Nature B.V
• Subjects: Argon; Boron; Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Infrared analysis; Infrared spectroscopy; Inorganic Chemistry; Materials Science; Melts; Nanoparticles; Photoelectrons; Reaction time; Scanning electron microscopy; Spectroscopic analysis; Spectrum analysis; Thermal analysis; Vanadium; X ray analysis; X-ray diffraction; nanoparticle; vanadium diboride; vanadium; amorphous boron; autoclave reactor; ionic melt
• ISSN: 0020-1685; 1608-3172
• DOI: 10.1134/S002016851905011X

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Reaction between vanadium and boron powders in the stoichiometric ratio 1 : 2 at a temperature of 800°C, argon pressure of 4 MPa, and reaction time of 32 h in Na
2
B
4
O
7
and KCl ionic melts has been studied by X-ray diffraction, energy dispersive X-ray analysis, scanning electron microscopy, X-ray photoelectron spectroscopy, frustrated total internal reflection IR spectroscopy, thermal analysis, and elemental analysis. The results demonstrate that, independent of the composition and nature of the melts, the reaction yields phase-pure vanadium diboride nanoparticles with an average diameter near 90 nm.