Desarrollo de películas adsorbentes y fotocatalíticas de TiO2-acetato de celulosa
Resumen
El objetivo de este trabajo fue la obtención de un material de óxido de titanio-acetato de celulosa (TiO2-AC) en forma de película, con propiedades adsorbentes y fotocatalíticas. Se utilizó azul de metileno (AM) como modelo en las pruebas de adsorción y fotocatálisis bajo irradiación solar. Los resultados de la caracterización morfológica y óptica de las muestras indican que se obtuvieron películas blancas, flexibles y porosas, con un band gap de 3.15 eV. Los resultados de la caracterización química y estructural indican que la película es un composito TiO2-AC, resultando de la interacción entre los grupos acetil del polímero y el grupo tinalol del TiO2. Los resultados de la evaluación de las nanopartículas de TiO2 y de la película TiO2-AC indican que la adsorción de AM es bien modelada por la isoterma de Langmuir. Los valores de las constantes de velocidad de remoción de AM son mayores en un orden de magnitud que los valores de las constantes de velocidad de fotodegradación, debido a la funcionalidad dual adsorbente/fotocatalizador de ambas muestras.
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Derechos de autor 2024 Sofía Estrada Flores, María Fernanda Herrera Pérez, Mariana Avalos Cárdenas, Antonia Martínez-Luévanos, Elsa Nadia Aguilera González
Esta obra está bajo licencia internacional Creative Commons Reconocimiento-NoComercial-SinObrasDerivadas 4.0.
