Synthesis of ZnO nanoparticles on a clay mineral surface in dimethyl sulfoxide medium

J. Németh, Geonel Rodríguez-Gattorno, David Díaz, América R. Vázquez-Olmos, I. Dékány

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

Nanocrystalline ZnO particles have been prepared with different methods using zinc cyclohexanebutyrate as precursor in dimethyl sulfoxide (DMSO) medium via alkaline hydrolysis. A series of preparations were carried out in the presence of layered silicates (kaolinite and montmorillonite). It was revealed by different measurement techniques that the presence of the clay minerals has a stabilization influence on the size of the ZnO nanocrystals. UV-vis absorption spectra show a blue shift when the nanoparticles are prepared in the presence of the clay minerals. The average particle diameters calculated from the Brus equation ranged from 2.6 to 13.0 nm. The UV-vis spectra of the synthesized nanoparticles did not show any red shift after 2-3 days, demonstrating that stable ZnO nanocrystals are present in the dispersions. The presence of the ZnO nanoparticles was also proven by fluorescence measurements. A number of the nanoparticles are incorporated into the interlamellar space of the clays, and an intercalated structure is formed as proven by X-ray diffraction (XRD) measurements. The size of the nanoparticles in the interlamellar space is in the range of 1-2 nm according to the XRD patterns. Transmission electron microscopy and high-resolution transmission electron microscopy investigations were applied to determine directly the particle size and the size distribution of the nanoparticles.

Original languageEnglish
Pages (from-to)2855-2860
Number of pages6
JournalLangmuir
Volume20
Issue number7
DOIs
Publication statusPublished - Mar 30 2004

Fingerprint

Dimethyl sulfoxide
Dimethyl Sulfoxide
Clay minerals
clays
minerals
Nanoparticles
nanoparticles
synthesis
Nanocrystals
nanocrystals
Bentonite
Kaolin
Silicates
X ray diffraction
transmission electron microscopy
kaolinite
Kaolinite
montmorillonite
High resolution transmission electron microscopy
Dispersions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Synthesis of ZnO nanoparticles on a clay mineral surface in dimethyl sulfoxide medium. / Németh, J.; Rodríguez-Gattorno, Geonel; Díaz, David; Vázquez-Olmos, América R.; Dékány, I.

In: Langmuir, Vol. 20, No. 7, 30.03.2004, p. 2855-2860.

Research output: Contribution to journalArticle

Németh, J. ; Rodríguez-Gattorno, Geonel ; Díaz, David ; Vázquez-Olmos, América R. ; Dékány, I. / Synthesis of ZnO nanoparticles on a clay mineral surface in dimethyl sulfoxide medium. In: Langmuir. 2004 ; Vol. 20, No. 7. pp. 2855-2860.
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