Dépôt numérique
RECHERCHER

Sol-gel synthesis of TiO2 nanoparticles: effect of Pluronic P123 on particle’s morphology and photocatalytic degradation of paraquat.

Marien, Cédric B. D.; Marchal, Clément; Koch, Alain; Robert, Didier; Drogui, Patrick (2017). Sol-gel synthesis of TiO2 nanoparticles: effect of Pluronic P123 on particle’s morphology and photocatalytic degradation of paraquat. Environmental Science and Pollution Research , vol. 24 , nº 14. p. 12582-12588. DOI: 10.1007/s11356-016-7681-2.

Ce document n'est pas hébergé sur EspaceINRS.

Résumé

We report a facile method to tune TiO₂ nanoparticles’ morphology by modifying and an acid-catalyzed sol-gel synthesis with Pluronic P123. Synthesized particles were characterized by transmission electron microscopy, BET analysis, and X-ray diffraction spectroscopy. XRD analysis revealed a high anatase content while BET measurements showed that porous volume strongly depends on the amount of P123. We demonstrate that high amounts of P123 increase particle’s aspect-ratio from spherical to rod-shape morphology. We evaluated the photocatalytic performances for the removal of methyl viologen (paraquat) and found that best performances are obtained for the following weight ratio P123/TiO₂ = 7.5. Furthermore, P25 is less active than synthesized nanoparticles.

Type de document: Article
Mots-clés libres: photocatalysis; sol-gel; TiO₂ nanoparticles; nanorods; methyl viologen
Centre: Centre Eau Terre Environnement
Date de dépôt: 12 févr. 2018 21:28
Dernière modification: 12 févr. 2018 21:28
URI: http://espace.inrs.ca/id/eprint/5698

Actions (Identification requise)

Modifier la notice Modifier la notice