Journal of Thermal Analysis and Calorimetry

, Volume 51, Issue 1, pp 125–133 | Cite as

Calorimetric investigation of the formation of ZnS nanoparticles in w/o microemulsions

  • V. Arcoleo
  • M. Goffredi
  • V. Turco Liveri
Article

Abstract

The enthalpies of precipitation of ZnS nanoparticles within water containing reversed micelles of sodium bis(2-ethylhexyl) solfosuccinate, L-α phosphatidylcholine, tetraethyleneglycol-mono-n-dodecyl ether and didodecyldimethylammonium bromide as a function of the molar concentration ratioR (R=[water]/[surfactant]) were measured by calorimetric technique. The results indicate that the energetic state of ZnS nanoparticles confined in the aqueous core of the reversed micelles is different from that in bulk water. Effects due to nanoparticle size, adsorption of HS− ions on the nanoparticle surface and interactions between nanoparticles and water/surfactant interfaces are discussed.

Keywords

calorimetric investigation reversed micelles ZnS nanoparticles 
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Copyright information

© Akadémiai Kiadó 1998

Authors and Affiliations

  • V. Arcoleo
    • 1
  • M. Goffredi
    • 1
  • V. Turco Liveri
    • 1
  1. 1.Dipartimento di Chimica FisicaUniversita di PalermoPalermoItaly

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