Desarrollo de fotocatalizadores basados en TiO2 en forma de película delgada para la degradación de moléculas orgánicas en solución acuosa
Resumen
El TiO2 se utiliza en una amplia variedad de aplicaciones, entre ellas la fotocatálisis en el área ambiental para autolimpieza de superficies y purificación de aire y agua. Con el propósito de desarrollar nuevos materiales con mejor respuesta fotocatalítica usando luz solar, se ha propuesto modificar el TiO2 siguiendo diversas estrategias. En este trabajo, se resumen los aspectos básicos de la fotocatálisis discutiéndose las ventajas de utilizar fotocatalizadores en forma de película delgada. Se presenta como caso de estudio la obtención de películas delgadas de TiO2 modificadas con zinc, utilizando una ruta de síntesis novedosa que permite buen control en la composición y estructura de los materiales obtenidos. Se muestran los resultados obtenidos en la evaluación fotocatalítica de las películas en la reacción de degradación del colorante verde de Malaquita, observándose algunas ventajas.
Citas
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