Size controlled nanocrystalline TiO2 supported on mesostructured SBA-15 for better photocatalytic performance

Dipti R. Sahu, Sheng Chang Wang, L. Y. Hong, Jow Lay Huang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Nanocrystalline TiO2 was prepared using sol gel hydrolysis and silica SBA-15 using organic solvent method. The synthesised SBA-15 served as the TiO2 support to reduce the TiO2 grain size and well-dispersed TiO2 for enhancement of photocatalytic activity. The synthesised titania/silica composites were characterised by X-ray diffraction, FTIR, TEM, UV-Visible spectroscopy, etc. TEM micrographs showed that the organic solute template method could prepare the titania-silica composite, and successfully embedded titania in SBA-15 channel. The mesoporous structure restrained the titania grain size within 5–7 nm which caused blue shift identified by UV-Vis spectra. The photo catalytic test of this material has been studied using methylene blue which shows improved performance than TiO2. Titania loading on the silica matrix decreases the surface area of the support and there is systematic decrease in their pore volume values, as titania content increases.

Original languageEnglish
Pages (from-to)150-161
Number of pages12
JournalInternational Journal of Nano and Biomaterials
Volume7
Issue number2
DOIs
Publication statusPublished - 2017

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering
  • Physical and Theoretical Chemistry

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