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Synthesis and characterization of SBA-15 with titania clusters entrapped in micropores

Authors
Journal
Journal of Non-Crystalline Solids
0022-3093
Publisher
Elsevier
Publication Date
Volume
352
Identifiers
DOI: 10.1016/j.jnoncrysol.2006.03.067
Keywords
  • Ceramics
  • Raman Scattering
  • X-Ray Diffraction
  • Scanning Electron Microscopy
  • Porosity
  • Nanoclusters

Abstract

Abstract Titania-containing SBA-15s were synthesized by impregnation of titanium isopropoxide in iso-propanol. X-ray diffraction, transmission electron microscopy, and N 2 sorption measurements showed that the mesostructures are intact after impregnations. Raman and UV–vis DRS spectra proved the existence of small anatase TiO 2 clusters (∼1.3 nm) after three loading cycles. Disappeared micropores and unchanged mesopore volumes after three loading cycles demonstrated that majority of micropores were consumed to immobilize these small titania clusters, which could provide a new way for the development mesoporous silica-supported titania.

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