期刊
RUSSIAN JOURNAL OF GENERAL CHEMISTRY
卷 89, 期 4, 页码 641-646出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1070363219040017
关键词
nanoparticles; vanadium diboride; sodium borohydride; vanadium(III) chloride; ionic melt
资金
- [0089-2019-0007]
X-ray diffraction, scanning electron microscopic, and X-ray photoelectron spectroscopic examinations, as well as energy dispersive X-ray and elemental analyses revealed the formation of single-phase VB2 with the average particle sizes of 20-35 nm from the reaction between vanadium(III) chloride and sodium borohydride at a molar ratio of 1: 10 in the temperature range of 595-930 degrees C in an argon atmosphere at a contact time of 14-28 h. The reaction between amorphous boron and vanadium powders at 800 degrees C in an argon atmosphere at a contact time of 32 h in Na2B4O7 and KCl ionic melts gave VB2 with the average particle size of similar to 90 nm.
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