Preparation of zinc oxide-montmorillonite hybrids

Nithima Khaorapapong, Nuttaporn Khumchoo, Makoto Ogawa

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

The new hybrid materials of zinc oxide with montmorillonite were synthesized by a reaction between the aqueous solutions of the reactants of zinc oxide (zinc chloride and sodium hydroxide solutions) and montmorillonite or hexadecyltrimetylammonium-montmorillonite. The hybrids were characterized by powder X-ray diffraction, Fourier transform-infrared, UV-visible and photoluminescence spectroscopies. The diffuse reflectance absorption spectra of the hybrids exhibited the absorption onsets at 375 nm for zinc oxide-montmorillonite and at 378 nm for zinc oxide-hexadecyltrimetylammonium- montmorillonite, respectively, confirming the formation of zinc oxide in the hybrid materials. The photoluminescence bands of both hybrids, which can be attributed to singly ionized oxygen vacancy in zinc oxide, were observed at 548 nm. The enhancement in emission intensity of the zinc oxide hybrids may be probably due to increase in oxygen vacancies defect arose by the surrounding environment of montmorillonite.

Original languageEnglish
Pages (from-to)657-660
Number of pages4
JournalMaterials Letters
Volume65
Issue number4
DOIs
Publication statusPublished - 2011 Feb 28

Keywords

  • Montmorillonite
  • Optical properties
  • Organophilic-montmorillonite
  • Zinc oxide

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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