| International Journal of Advanced Applied Physics Research (Volume 3 Issue 1) |
| Elaboration of novel nanoparticulateTiO2-P25@n-TiO2 composite for photocatalysis |
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Pages 19-25
Guy Didier Fanou, Benjamin Yao, Khley Cheng, Ovidiu Brinza, Mamadou Traoré, Andrei Kanaev and Khay Chhor
DOI: http://dx.doi.org/10.15379/2408-977X.2016.03.01.04
Published: 10 October 2016 |
| Abstract |
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A new mechanically stable TiO2-P25@n-TiO2 nanocoating was prepared after grafting of size-selected titanium-oxo-alkoxy particles on P25-TiO2 nanoparticles surface and their immobilization on a glass substrate followed by a thermal treatment. The 5-nm oxo-TiO2 particles were prepared in a sol-gel reactor with rapid reagents micromixing. The photocatalyst with 65% TiO2-P25 loading shows the highest activity towards ethylene degradation in a continuous-flow fixed-bed reactor. This material has a higher activity compared to that prepared by a conventional sol-gel method with strongly polydispersed titanium-oxo-alkoxy nanoparticles and clusters. The reaction conditions were explicitly analyzed along the reactor as a function of the ethylene concentration in framework of a kinetic model, which shows interplay between zero and first order processes.
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| Keywords |
| TiO2, Nanoparticles, Photocatalysis, Ethylene, Sol-gel. |
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