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Alkoxyl-derived visible light activity of TiO2 synthesized at low temperature
- Source :
-
Journal of Molecular Catalysis A: Chemistry . Feb2011, Vol. 335 Issue 1/2, p97-104. 8p. - Publication Year :
- 2011
-
Abstract
- Abstract: A visible-light responsive anatase TiO2 was synthesized with a facile peptization-reflux method at 120°C, using tetrabutyl titanate (TBT) as the titanium precursor. According to the results of various experiments and characterizations, we observed that in the low-temperature synthetic process of TiO2 catalysts, there is an equilibrium of hydrolytic decomposition and re-combination of Ti–(O–R) bond from the titanium precursor; the presence of acid and hydrolysis products (n-butanol) cooperatively lead to the retention of more alkoxyl groups on the anatase surface. Upon visible light irradiation, excited electrons could be generated from these alkoxyl-derived surface states, and the photocatalytic reactions through a ligand-to-metal charge transfer (LMCT) process were thus initiated. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13811169
- Volume :
- 335
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Journal of Molecular Catalysis A: Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 57373925
- Full Text :
- https://doi.org/10.1016/j.molcata.2010.11.019