Synthesis of WS2 and MoS2 fullerene-like nanoparticles from solid precursors
Inorganic fullerene-like WS2 and MoS2 nanoparticles have been synthesized using exclusively solid precursors, by reaction of the corresponding metal oxide nanopowder, sulfur and a hydrogen-releasing agent (NaBH4 or LiAlH4), achieved either by conventional furnace heating up to ∼900 °C or by photothermal ablation at far higher temperatures driven by highly concentrated white light. In contrast to the established syntheses that require toxic and hazardous gases, working solely with solid precursors permits relatively safer reactor conditions conducive to industrial scale-up.
KeywordsNanoparticles fullerene-like synthesis WS2 MoS2
- Rao, C. N. R.; Nath, M. Inorganic nanotubes. Dalton Trans. 2003, 1–24.Google Scholar
- Zak, A.; Genut, M.; Tenne, R.; Fleischer, N. Insight into the growth mechanism of WS2 nanotubes in the scaledup fluidized bed reactors. Nano, in press.Google Scholar
- Feldman, Y.; Frey, G. L.; Homyonfer, M.; Lyakhovitskaya, V.; Margulis, L.; Cohen, H.; Hodes, G.; Hutchison, J. L.; Tenne, R. Bulk synthesis of inorganic fullerene-like MS2 (M=Mo, W) from the respective trioxides and the reaction mechanism. J. Am. Chem. Soc. 1996, 118, 5362–5367.CrossRefGoogle Scholar
- Hu, J. Q.; Bando, Y.; Zhan, J. H.; Liu, Z. W.; Golberg, D. Uniform and high-quality submicrometer tubes of GaS layered crystals. Appl. Phys. Lett. 2005, 87, 153112.Google Scholar