Synthesis and characterization of silver nanoparticle/kaolinite composites

Rita Patakfalvi, A. Oszkó, I. Dékány

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

Ag nanoparticles were synthetized in the interlamellar space of a layered kaolinite clay mineral. Disaggregation of the lamellae of non-swelling kaolinite was achieved by intercalation of dimethyl sulfoxide. The kaolinite was suspended in aqueous AgNO3 solution and, after adsorption of Ag+, the ions were reduced with NaBH4. The interlamellar space limits particle growth (dave=3.8-4.2 nm); however, larger silver particles may be formed on the exterior surface of kaolinite with dave=5.6-10.5 nm diameter. The diameter of the particles prepared in this way is depending on the initial AgNO3 concentration. The silver nanoparticles prepared were characterized by UV-vis spectroscopy, X-ray diffraction (XRD), Small angle X-ray scattering (SAXS), X-ray photoelectron spectroscopy (XPS) and Transmission electron microscopy (TEM).

Original languageEnglish
Pages (from-to)45-50
Number of pages6
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume220
Issue number1-3
DOIs
Publication statusPublished - Jun 30 2003

Fingerprint

Kaolin
kaolinite
Kaolinite
Silver
silver
Nanoparticles
nanoparticles
composite materials
Composite materials
synthesis
x rays
Dimethyl sulfoxide
lamella
Intercalation
Dimethyl Sulfoxide
Clay minerals
Ultraviolet spectroscopy
X ray scattering
intercalation
clays

Keywords

  • Disaggregated kaolinite
  • SAXS
  • Silver nanoparticles
  • TEM
  • UV-vis spectroscopy
  • XPS
  • XRD

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Synthesis and characterization of silver nanoparticle/kaolinite composites. / Patakfalvi, Rita; Oszkó, A.; Dékány, I.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 220, No. 1-3, 30.06.2003, p. 45-50.

Research output: Contribution to journalArticle

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