Nanosized titania encapsulated silica particles using an aqueous TiCl 4 solution

Han Ho Choi, Joodong Park, R. K. Singh

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

In this study, sub-micron sized silica particles were encapsulated with nanosized titania particles using an aqueous TiCl 4 solution. The particle size distribution of the synthesized titania particles in the coating layer was estimated to be 10 nm from X-ray powder diffraction and0 transmission electron microscopy. The thickness of the coating layer ranged from a few nm to about 30 nm from transmission electron microscopy analysis. Zeta potential analysis demonstrated the presence of a titania particle coating layer and the extent of its coverage on the surface of silica particles. X-ray photoelectron spectroscopy analysis also demonstrated that titania particles were successfully deposited on the surface of core silica particles from the chemical shift of binding energies of O 1s, Ti 2p and Si 2p.

Original languageEnglish
Pages (from-to)7-12
Number of pages6
JournalApplied Surface Science
Volume240
Issue number1-4
DOIs
StatePublished - 15 Feb 2005
Externally publishedYes

Keywords

  • Nanoencapsulation
  • Titania coated silica particles

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