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Title

Influence of amine template on the photoactivity of TiO2 nanoparticles obtained by hydrothermal treatment

AuthorsColón, Gerardo CSIC ORCID; Hidalgo, M.C. CSIC ORCID ; Navío, José Antonio CSIC ORCID; Pulido Melián, E.; González Díaz, O.; Doña-Rodríguez, J.M.
Issue Date2008
PublisherElsevier
CitationApplied Catalysis B: Environmental 78 176–182 (2008)
AbstractTiO 2 nanoparticles have been prepared by amine template-assisted sol–gel precipitation and further hydrothermal treatment. We have investigated the effect of different amines (hydrazine and triethylamine) in the final surface and structural properties. It has been stated that the different amounts of amine could act as an interesting template upon hydrothermal treatment. Further thermal treatment also leads to a significant improvement in the photocatalytic properties of the studied systems. Surface and morphological features notably differ from TiO 2 prepared using different synthetic routes. Wide surface and structural characterization of the samples have been carried out, and correlations with precipitatio npH are pointed out from this characterization. In all cases, amine template TiO 2 obtained exhibit high conversion values for phenol photo-oxidation reaction. Further calcination treatment of all the studied systems clearly leads to photocatalytic conversions higher than that exhibited by TiO 2 Degussa P25.
Publisher version (URL)http://dx.doi.org/10.1016/j.apcatb.2007.09.01
URIhttp://hdl.handle.net/10261/12212
DOIhttp://dx.doi.org/10.1016/j.apcatb.2007.09.01
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