Nickel-tungsten bimetallic sulfide nanostructures of fullerene type

A. Olivas, A. Camacho, M. J. Yacamán, S. Fuentes

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Bimetaltic NiW sulfide, nanostructures of the inorganic fullerene-like (IF-like) type were prepared by a chemical method employing ammonium thiotungstate and nickel nitrate as metal-sulfide precursors followed by sulfidation in H2S/H2 at 400 °C. The nanostructures were grown with a Ni excess, at an atomic ratio R = 0.85 (R = Ni/Ni + W). The x-ray diffraction patterns showed poorly crystalline WS2, WO2, NiS, and Ni9S8 phases. High-resolution electron microscopy micrographs revealed the formation of two fullerene-like nanostructures, nickel sulfide nanoparticles and long nanotubes filled with tungsten suboxide, both coated by several WS2 layers. The surface area of 18 m2/g measured by nitrogen adsorption (BET surface-area) revealed that these materials contained micropororosity.

Original languageEnglish (US)
Pages (from-to)2176-2184
Number of pages9
JournalJournal of Materials Research
Issue number7
StatePublished - Jul 2004
Externally publishedYes

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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