Preparation and Characterization of Au/Pd Modified-TiO2 Photocatalysts for Phenol and Toluene Degradation under Visible Light—The Effect of Calcination Temperature
PBN-AR
Instytucja
Wydział Chemiczny (Politechnika Gdańska)
Informacje podstawowe
Główny język publikacji
ENG
Czasopismo
Journal of Nanomaterials
ISSN
1687-4110
EISSN
Wydawca
DOI
URL
Rok publikacji
2014
Numer zeszytu
918607
Strony od-do
1-9
Numer tomu
2014
Link do pełnego tekstu
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Słowa kluczowe
NANOPARTICLES, TIO2, AU/PD-TIO2, PHOTOCATALYSIS
Streszczenia
Język
Treść
Rutile loaded with Au/Pd nanoparticles was prepared using a water-in-oil microemulsion system of water/AOT/cyclohexane followed by calcination.Theeffect of calcination temperature (from350 to 700∘C) on the structure ofAu/Pd nanoparticles deposited at rutile matrix and the photocatalytic properties of Au/Pd-TiO2 was investigated in two model reactions (toluene degradation in gas phase and phenol degradation in aqueous phase). The sample 0.5 mol% Pd/TiO2 exhibited the highest activity under visible light irradiation in gas and aqueous phase reaction among all photocatalysts calcined at 350∘C, while the sample modified only with gold nanoparticles showed the lowest activity. The Au/Pd-TiO2 sample calcinated at 350∘C possesses the highest photocatalytic activity when degrading phenol under visible light, which is 14 times higher than that of the one calcinated at 450∘C. It was observed that increasing temperature from 350 to 700∘C during calcination step caused segregation of metals and finally resulted in photoactivity drop.
Inne
System-identifier
127774
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