Physico-chemical investigation of nanostructures in liquid phases: Nickel chloride ionic clusters confined in sodium bis(2-ethylhexyl) sulfosuccinate reverse micelles.

Vincenzo Turco Liveri, Gaetano Di Marco, Pietro Calandra

Risultato della ricerca: Articlepeer review

28 Citazioni (Scopus)

Abstract

The confinement of finite amounts of nickel chloride in the hydrophilic core of sodium bis(2-ethylhexyl)sulfosuccinate (AOT) reverse micelles dispersed in n-heptane has been investigated by FT-IR, UV–vis-NIRand fluorescence spectroscopies. The analysis of experimental data consistently leads to hypothesize thatNiCl2 forms small size ionic clusters stabilized by a monolayer of oriented surfactant molecules. Due toconfinement and interfacial effects, these ionic clusters show peculiar photophysical properties, whichare different from those possessed by the bulk material. From NiCl2/AOT/n-heptane solutions, by evaporationof the organic solvent, interesting salt/surfactant nanocomposites at various salt concentrationshave been prepared and characterised by WAXS. On the other hand, after mix with Na2S-containingdry micellar systems, the formation of NiS nanoparticles have been ascertained by UV–vis spectroscopy.
Lingua originaleEnglish
pagine (da-a)176-182
Numero di pagine7
RivistaJournal of Colloid and Interface Science
Volume336
Stato di pubblicazionePublished - 2009

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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