Preparation, characterization, and photocatalytic properties of layered-silicate-supported TiO2 and ZnO nanoparticles

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Abstract

TiO2 nanoparticles were prepared in 2-propanol and in water from titanium alkoxide, and ZnO nanoparticles were formed from aqueous ZnCl2 either in situ in sodium montmorillonite and in synthetic hectorite or, alternatively, were incorporated into the silicate lamellas. Transmission electron microscopy (TEM), X-ray diffraction, and Brunauer-Emmett-Teller measurements were used to establish the incorporation of semiconductor nanoparticles into the interlamellar space of the clays. The average particle diameter of the nanoparticles, determined by TEM, ranged between 4 and 14 nm. The photocatalytic activity of TiO2, intercalated into montmorillonite, for salicylic acid photooxidation was determined to be better than that elicited by TiO2 alone.

Original languageEnglish
Pages (from-to)88-93
Number of pages6
JournalProgress in Colloid and Polymer Science
Volume117
Publication statusPublished - Dec 1 2001

Keywords

  • Intercalation
  • Montmorillonite
  • Photooxidation
  • TiO
  • ZnO nanoparticles

ASJC Scopus subject areas

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

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