Abstract—
The products of reaction between TiCl4 and NaBH4 in NaCl/KCl or KBr ionic melts at 973 and 1023 K under an argon pressure of 5 MPa have been characterized by various physicochemical analysis techniques. The results demonstrate that these conditions lead to the formation of TiB2 nanoparticles with hexagonal symmetry (sp. gr. P6/mmm, AlB2 structure) and lattice parameters a = 0.3022–0.3025 nm and с = 0.3214–0.3221 nm. The average diameters of the TiB2 nanoparticles evaluated from electron microscopy, specific surface area, and X-ray diffraction (crystallite size) data for the two synthesis temperatures are ~10 and ~15, ~12 and ~17, and ~5 and ~10 nm, respectively.
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ACKNOWLEDGMENTS
In this study, we used equipment at the Shared Analytical Facilities Center, Institute of Problems of Chemical Physics, Russian Academy of Sciences.
Funding
This work was supported by the Russian Federation Ministry of Science and Higher Education, state research targets for the Institute of Problems of Chemical Physics, Russian Academy of Sciences (theme state registration no. AAAA-A19-119061890019-5) and the Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences (theme no. 44.1).
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Vinokurov, A.A., Kovalev, D.Y., Korobov, I.I. et al. Synthesis, Structure, and Properties of Titanium Diboride Nanoparticles. Inorg Mater 56, 1127–1132 (2020). https://doi.org/10.1134/S0020168520110163
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DOI: https://doi.org/10.1134/S0020168520110163