Active TiO2photocatalysts were prepared under mild experimental conditions by thermohydrolysis of TiCl4in pure water at 100°C The preparation method is very simple and does not require the use of expensive thermal or hydrothermal treatments. Depending on the TiCl4/H2O ratio, pure rutile, binary mixtures of anatase and rutile or anatase and brookite, or ternary mixtures of anatase, brookite and rutile, can be obtained. 4-nitrophenol photodegradation was used to evaluate the photoactivity of the various powders. The high photocatalytic activity of the mixed samples was explained by the presence of junctions among different polymorphic TiO2phases that allows an improved charge separation of the photogenerated electron-hole pairs, hindering their recombination. ©The Electrochemical Society.

Di Paola, A., Bellardita, M., Palmisano, L., Parrino, F. (2010). Junction effect on the photocatalytic activity of mixed-phase TiO 2 nanoparticles. In ECS Transactions (pp.29-35) [10.1149/1.3416199].

Junction effect on the photocatalytic activity of mixed-phase TiO 2 nanoparticles

Di Paola, A.;Bellardita, M.;Palmisano, L.;Parrino, F.
2010-01-01

Abstract

Active TiO2photocatalysts were prepared under mild experimental conditions by thermohydrolysis of TiCl4in pure water at 100°C The preparation method is very simple and does not require the use of expensive thermal or hydrothermal treatments. Depending on the TiCl4/H2O ratio, pure rutile, binary mixtures of anatase and rutile or anatase and brookite, or ternary mixtures of anatase, brookite and rutile, can be obtained. 4-nitrophenol photodegradation was used to evaluate the photoactivity of the various powders. The high photocatalytic activity of the mixed samples was explained by the presence of junctions among different polymorphic TiO2phases that allows an improved charge separation of the photogenerated electron-hole pairs, hindering their recombination. ©The Electrochemical Society.
2010
Semiconductor Electrolyte Interface and Photoelectrochemistry - 216th ECS Meeting
Vienna, aut
2009
2010
7
Di Paola, A., Bellardita, M., Palmisano, L., Parrino, F. (2010). Junction effect on the photocatalytic activity of mixed-phase TiO 2 nanoparticles. In ECS Transactions (pp.29-35) [10.1149/1.3416199].
Proceedings (atti dei congressi)
Di Paola, A.*; Bellardita, M.; Palmisano, L.; Parrino, F.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/294789
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