Photocatalytic activity of TiO2-P25@n-TiO2@HAP composite films for air depollution.
We report on an elaboration of new composite photocatalysts (TiO2-P25@ n-TiO2@HAP) based on grafted size-selected 5-nm titanium-oxo-alkoxo nanoparticles on P25-TiO2 nanoparticles and HAP obtained by co-precipitation of salts. The 5-nm oxo-TiO2 particles were prepared in a sol-gel reactor with rapid reagents micromixing. The photocatalytic test of ethylene degradation, in a continuous-flow fixed-bed reactor, showed an increase of the photocatalytic yield for the composite photocatalysts with an addition of HAP. This result was interpreted by a synergy between adsorption and photo-oxidation.
['Fanou|Guy Didier|GD|', 'Traore|Mamadou|M|http://orcid.org/0000-0001-9301-6199', 'Yao|Benjamin Kouassi|BK|', 'Kanaev|Andrei|A|', 'Chhor|Khay|K|']
D000327:Adsorption D002384:Catalysis D053758:Nanoparticles D014025:Titanium
Composite nanoparticles Hydroxyapatite Photocatalysis TiO2