Synthesis of Vanadium Diboride Nanoparticles via Reaction of VCl3 with NaBH4

Abstract

It has been shown using X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, and elemental analysis that phase-pure VB 2 with an average particle size in the range 20-35 nm can be prepared in the temperature range 595-930°C by reacting vanadium(III) chloride and sodium borohydride in the molar ratio 1 : 10 in an argon atmosphere for 14-28 h.

Doping and Structure-Promoted Destabilization of NaBH4 Nanocubes for Hydrogen Storage

“…This may be because the formation of the crystalline V x B y phase requires a temperature of >500 °C. 51,52 FTIR analysis also corroborated well with the XRD results (Figure 7). For V-NaBH 4 at 200 °C, the bending vibrations were comparable to that of as-synthesized V-NaBH 4 .…”

“…Besides Ni and Ni 2 B species, no evidence was found for the formation of crystalline V x B y even after heating to 400 °C (Figure b). This may be because the formation of the crystalline V x B y phase requires a temperature of >500 °C. , …”