Microemulsion-mediated synthesis of nanosize molybdenum sulfide particles
Journal Article
·
· Journal of Colloid and Interface Science; (United States)
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering
A microemulsion-based method for the synthesis of molybdenum sulfide nanoparticles is reported. Molybdenum sulfide particles in the size range 10--80 nm have been precipitated in water-in-oil microemulsions (water-containing inverse micelles) formulated with polyoxyethylene(5)nonylphenyl ether (NP-5). The particles were synthesized in the NP-5/cyclohexane/water microemulsion system by acidifying ammonium tetrathiomolybdate solubilized in the water cores of the inverse micelles. Particle characterization was accomplished by chemical analysis, transmission electron microscopy, and ultraviolet/visible spectroscopy. The small size and the cage-like nature of the microemulsion water cores limit particle growth and aggregation. The particle size was found to be a function of the water-to-surfactant molar ratio and the average number of ammonium tetrathiomolybdate ions solubilized per water core. These trends are rationalized in terms of classical nucleation theory and aggregative growth concepts.
- DOE Contract Number:
- AC22-90PC90054
- OSTI ID:
- 7233234
- Journal Information:
- Journal of Colloid and Interface Science; (United States), Journal Name: Journal of Colloid and Interface Science; (United States) Vol. 163:1; ISSN 0021-9797; ISSN JCISA5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AMMONIUM COMPOUNDS
CATALYSIS
CATALYSTS
CHALCOGENIDES
HETEROGENEOUS CATALYSIS
MICELLAR SYSTEMS
MOLYBDATES
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
REFRACTORY METAL COMPOUNDS
SIZE
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
400201* -- Chemical & Physicochemical Properties
AMMONIUM COMPOUNDS
CATALYSIS
CATALYSTS
CHALCOGENIDES
HETEROGENEOUS CATALYSIS
MICELLAR SYSTEMS
MOLYBDATES
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
REFRACTORY METAL COMPOUNDS
SIZE
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS