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File: /home/orthodiedw/nutridatabase/application/controllers/Articles.php
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Implications de la bande interdite sur la modification de surface de nano-TiO₂ avec l'acide ascorbique pour un photocatalyseur recouvert de polypropylène léger et actif visible.

L'effet de la modification de surface utilisant l'acide ascorbique comme modificateur de surface du photocatalyseur hétérogène nano-TiO (2) a été étudié. La préparation du photocatalyseur supporté a été réalisée avec une pâte spécifique contenant des nanoparticules de TiO (2) modifiées à l’acide ascorbique, utilisées pour recouvrir le polypropylène en tant que matériau de support. Le photocatalyseur hétérogène obtenu a été complètement caractérisé (microscope électronique à balayage (SEM), RAMAN, diffraction des rayons X (XRD), spectroscopie de photoélectrons par rayons X (XPS), photoluminescence (PL) et spectre de réflexion diffuse (DRS)) et appliqué avec succès la photodégradation par la lumière visible de l’Alizarine Rouge S dans des solutions aqueuses, en particulier ce nouveau photocatalyseur supporté par TiO (2) a montré une modification du mécanisme d’adsorption du colorant par rapport à celui du TiO (2) uniquement en raison des propriétés de surface. , une amélioration des performances photocatalytiques de la photodégradation en lumière visible a été obtenue, montrant une corrélation stricte entre l'efficacité et les valeurs de la bande interdite énergétique, mettant en évidence la modification de surface favorable des nanoparticules de TiO (2).


Source: https://www.ncbi.nlm.nih.gov/pubmed/30087248


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