Abstract
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.









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All the authors (Guy Didier FANOU, Mamadou TRAORE, Benjamin Kouassi YAO, Andrei KANAEV and Khay CHHOR) contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Guy Didier FANOU. The first draft of the manuscript was written by Mamadou TRAORE, and other authors (Guy Didier FANOU, Benjamin Kouassi YAO, Andrei KANAEV, and Khay CHHOR) commented on previous versions of the manuscript. All the authors (Guy Didier FANOU, Mamadou TRAORE, Benjamin Kouassi YAO, Andrei KANAEV and Khay CHHOR) read and approved the final manuscript.
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Fanou, G.D., Traore, M., Yao, B.K. et al. Photocatalytic activity of TiO2–P25@n-TiO2@HAP composite films for air depollution. Environ Sci Pollut Res 28, 21326–21333 (2021). https://doi.org/10.1007/s11356-020-11924-4
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DOI: https://doi.org/10.1007/s11356-020-11924-4

