Structural properties of palladium nanoparticles embedded in inverse microemulsions

S. Papp, I. Dékány

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Pd nanoparticles were synthesized by reduction of palladium acetate by ethanol in systems containing tetrahydrofuran (THF) as dispersion medium and tetradodecylammonium bromide (TDABr)surfactant as stabilizer. The polar phase (ethanol) acts at the same time as reducing agent. THF/TDABr/ H2O inverse microemulsions containing micelles of various sizes were also prepared, and the structure of complex liquids was studied by density measurements. Sols containing nanosize Pd0 particles were synthesized within the water droplets of this micellar system. The stabilized Pd0/surfactant system was characterized by density measurements, absorption spectroscopy, and transmission electron microscopy. The stabilizing surfactant layer adsorbed on the liquid/liquid interface and on the surface of the nanoparticles (i.e., the liquid/solid interface) significantly reduced the excess volume for the palladium nanodispersion in organic solvent.

Original languageEnglish
Pages (from-to)449-458
Number of pages10
JournalColloid and Polymer Science
Volume279
Issue number5
DOIs
Publication statusPublished - May 26 2001

Keywords

  • Excess volume of solution
  • Microemulsions
  • Pd nanoparticles
  • Stabilization of colloid particles
  • Surfactants
  • TEM

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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