Preparation of a highly active nanocrystalline TiO₂ photocatalyst from titanium oxo cluster precursor

Ling WU, Jimmy C YU, Lizhi ZHANG, Xinchen WANG, Wing Kei HO

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Abstract

Nanocrystalline TiO₂ (sample S1) was prepared from a titanium oxo cluster (Ti₇O₄(OEt)₂₀) precursor via a sol–gel route. This photocatalyst showed a higher photocatalytic activity than the TiO₂ (sample S2) obtained from titanium tetraisopropoxide. The samples were characterized by thermal analysis (TGA/DSC), X-ray diffraction, micro-Raman spectroscopy, transmission electron microscopy, N₂ adsorption (BET surface area), infrared absorption spectroscopy (FT-IR) and X-ray photoelectron spectroscopy. The characterization results show that both samples are anatase nanocrystals with particle sizes of about 12 nm, but the more photocatalytically active sample S1 has more surface hydroxyl groups and larger surface area and pore volume than sample S2. Copyright © 2004 Elsevier Inc. All rights reserved.
Original languageEnglish
Pages (from-to)2584-2590
JournalJournal of Solid State Chemistry
Volume177
Issue number7
DOIs
Publication statusPublished - Jul 2004

Citation

Wu, L., Yu, J. C., Zhang, L., Wang, X., & Ho, W. (2004). Preparation of a highly active nanocrystalline TiO₂ photocatalyst from titanium oxo cluster precursor. Journal of Solid State Chemistry, 177(7), 2584-2590. doi: 10.1016/j.jssc.2004.03.033

Keywords

  • Nanocrystalline TiO₂
  • Titanium oxo cluster
  • Photocatalytic activity

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