Nanoestructuras de películas delgadas de CuO/ZnO y su aplicación en la actividad fotocatalítica, una revisión
Palabras clave:
fotocatalizador, semiconductor, óxido de zinc, óxido de cobre, ancho de bandaResumen
Las películas delgadas de óxidos de cobre (CuO) y óxido de zinc (ZnO) han captado una atención significativa en el ámbito de la investigación científica, principalmente por su notable eficiencia fotocatalítica en la degradación de contaminantes orgánicos cuando son sometidas a irradiación de luz. Este interés se debe a la creciente necesidad de encontrar soluciones efectivas para la purificación ambiental y la eliminación de desechos tóxicos. Entre los diversos métodos de síntesis utilizados para la deposición de estas películas delgadas, se destacan tanto técnicas químicas como físicas, cada una con sus propias ventajas y aplicaciones. Esta revisión se centra en los avances recientes en la síntesis de películas delgadas de CuO/ZnO, tanto de manera individual como en forma de heteroestructura, abordando factores clave que influyen en la fotodegradación como el pH, concentraciones del material y del contaminante, además de los resultados obtenidos en términos de actividad fotocatalítica. De igual manera, se ve la importancia de el espesor de las películas delgadas y su captación con el colorante, todo esto para optimizar las propiedades de las películas delgadas. Además, se discute sobre el uso de las heteroestructuras como fotocatalizadores al tener un comportamiento diferente en cuanto a sus propiedades eléctricas debido a un cambio energético propio de la heteroestructura, y sobre su alta eficiencia fotocatalítica al dar porcentajes altos de remoción de colorantes en pruebas de fotodegradación.
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