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Article Dans Une Revue Chemical Engineering Transactions Année : 2021

Preparation and Photocatalytic Activity of Coatings based on Size-selective V-TiO 2 Nanoparticles

Résumé

Titanium-vanadium oxo-alkoxy (VTOA) nanoparticles with vanadium addition (V:Ti) between 0 and 20 mol% were prepared via sol-gel method in a chemical reactor with ultra-rapid micromixing. A control of the nucleation and growth process in the reactor permitted synthesis of size-selective V-TiO 2 nanoparticles, which were used for the nanocoatings deposition on glass beads. The activity of the prepared photocatalysts (after calcination at 450 °C) was studied by the degradation of methylene blue in aqueous solutions under UVA illumination. A steady decrease of the reaction rate was observed with an increase of the vanadium content. This effect was explained by the residual presence of non-crystallized oxide, which elimination requires further studies.

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Matériaux
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Dates et versions

hal-03412171 , version 1 (02-11-2021)

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Miguel Sanchez Mendez, Alex Lemarchand, Mamadou Traore, Mounir Ben Amar, Christian Perruchot, et al.. Preparation and Photocatalytic Activity of Coatings based on Size-selective V-TiO 2 Nanoparticles. Chemical Engineering Transactions, 2021, ⟨10.3303/CET2184004⟩. ⟨hal-03412171⟩
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