Fullerene-like Nanoparticles of Titanium Disulfide

Authors: Margolin, Alexander; Popovitz-Biro, Ronit; Albu-Yaron, Ana; Moshkovich, Alexander; Rapoport, Lev; Tenne, Reshef

Source: Current Nanoscience, Volume 1, Number 3, November 2005 , pp. 253-262(10)

Publisher: Bentham Science Publishers

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Abstract:

TiS2 nanoparticles with nested fullerene-like structure (IF) 60-120 nm in size consisting of up to 100 concentric molecular layers and having quite a perfectly spherical shape were obtained by reacting TiCl4 and H2S using first a horizontal and subsequently a vertical reactor. The proposed growth mechanism of these nanoparticles, i.e. nucleation and growth, is radically different from the one proposed for the growth of the fullerene-like WS2 from the respective oxide nanoparticles. It was found that adding 1-2% IF-TiS2 improves the behavior of lubricating oil substantially. The improved performance of the additive was attributed to the nearly spherical shape of the nanoparticles which promotes rolling friction.

Keywords: coalescence; agglomeration; double-zone oven; titanium tetrachloride; electron microscopy; X-ray diffraction

Document Type: Review article

DOI: http://dx.doi.org/10.2174/157341305774642902

Affiliations: 1: Department of Materials and Interfaces, Weizmann Institute, Rehovot 76100, Israel.

Publication date: 2005-11-01

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