Preparation of Pd0 nanoparticles stabilized by polymers and layered silicate

Szilvia Papp, Anna Szücs, I. Dékány

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

The synthesis of palladium nanoparticles on montmorillonite layer silicates was studied. The solid/liquid interfacial layer was utilized as a nanoreactor for the synthesis of particles in the interlamellar space. Pd2+ ions are first adsorbed from acidic PdCl2 solution in an aqueous suspension of montmorillonite and are next reduced to Pd0 by ethanol within the adsorption layer. Pd0 nanoparticles appear and grow in the internal, interlamellar space as well as on the external surface of the lamellae. Another method for generation of nanoparticles was also carried out using aqueous polymer solutions in the presence of clay; however, the nanoparticles can be bond to the clay mineral lamellae. In the course of clay/polymer aggregation following reduction, the larger clusters formed in the bulk phase may become attached to the silicate layers via macromolecules acting as molecular bridges. The structure, specific surface area, porosity, etc., of montmorillonite are significantly altered by the incorporation of nanoparticles. These alterations were monitored by various techniques (N2 adsorption, X-ray diffraction (XRD), transmission electron microscopy (TEM)). TEM is also eminently suitable for the determination of average particle size and size distribution functions.

Original languageEnglish
Pages (from-to)155-172
Number of pages18
JournalApplied Clay Science
Volume19
Issue number1-6
DOIs
Publication statusPublished - Jul 2001

Fingerprint

Silicates
Polymers
Bentonite
silicate
polymer
Nanoparticles
montmorillonite
transmission electron microscopy
Nanoreactors
Transmission electron microscopy
adsorption
Adsorption
clay
palladium
Palladium
Polymer solutions
Clay minerals
Macromolecules
Specific surface area
Distribution functions

Keywords

  • Electron microscopy
  • Montmorillonite
  • Palladium nanoparticles
  • Polymer stabilization

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology

Cite this

Preparation of Pd0 nanoparticles stabilized by polymers and layered silicate. / Papp, Szilvia; Szücs, Anna; Dékány, I.

In: Applied Clay Science, Vol. 19, No. 1-6, 07.2001, p. 155-172.

Research output: Contribution to journalArticle

Papp, Szilvia ; Szücs, Anna ; Dékány, I. / Preparation of Pd0 nanoparticles stabilized by polymers and layered silicate. In: Applied Clay Science. 2001 ; Vol. 19, No. 1-6. pp. 155-172.
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