Nonhydrolytic layer-by-layer surface sol-gel modification of powdered mesoporous silica materials with TiO 2

Wenfu Yan, Shannon M. Mahurin, Steven H. Overbury, Sheng Dai

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

The nonhydrolytic surface sol-gel (NSS) process, which was used for the layer-by-layer modification of mesoporous silica materials (SMA-15) with TiO 2, was described. The SBA-15 materials had hexagonally packed channels with pore sizes of ∼8.5 nm. The low-angle X-ray diffraction patterns of SBA-15 and monolayer-, double-layer-, and triple-layer-covered SBA-15 showed that the hexagonal structure of the SBA-15 was retained during the NSS layer-by-layer functionalization. The results show that the process can be expanded to modify other powdered materials that contain active hydroxyl groups with unitary or mixed metal oxides.

Original languageEnglish
Pages (from-to)1923-1925
Number of pages3
JournalChemistry of Materials
Volume17
Issue number8
DOIs
StatePublished - Apr 19 2005

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