Análisis integral del desempeño de fotocatalizadores en la producción de hidrógeno
DOI:
https://doi.org/10.29105/cienciauanl23.100-1Palabras clave:
NaTaO3, Na2ZrxTi6-xO13 (x = 0,1), foto(y electro)catálisis, hidrógeno, heteroestructurasResumen
Se presenta una revisión y análisis integral de resultados de NaTaO3 (perovskita) y la solución sólida Na2ZrxTi6-xO13 (x = 0,1) de túneles rectangulares, en forma de polvos y películas, con alto desempeño en la producción foto y electrocatalítica de H2. La eficiencia de estos procesos fue mejorada mediante: a) el estudio del efecto del método de síntesis en las propiedades y su desempeño en estos procesos, b) la construcción de microestructuras facetadas en películas delgadas, y c) la formación de heteroestructuras mediante el depósito de cocatalizadores metálicos. Se obtuvieron películas delgadas del NaTaO3 con estructura tipo perovskita, altamente cristalinas por LCVD sobre sustratos de acero inoxidable para su aplicación en la reacción fotocatalítica de conversión de agua. Se logró el depósito de películas delgadas de la fase ortorrómbica NaTaO3, mediante la técnica de LCVD, con microestructura altamente facetada tipo piramidal; se observó, además, la presencia de nanoescalones. La eficiencia de las películas de LCVD-NaTaO3 fue 13 veces superior a la de los polvos. Se prepararon exitosamente nanobastones 1D, de las fases Na2ZrxTi6-xO13 (x = 0,1) con estructura de túneles rectangulares, mediante el método de solvocombustión.
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