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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1299| Nanostructured Ferrite as Photocatalysts for H2 Generation from Water Splitting and Sunlight | |
| MERCEDES YUDITH ORTEGA LOPEZ ALEJANDRO LOPEZ ORTIZ VIRGINIA HIDOLINA COLLINS MARTINEZ | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| Ferrites Photocatalytic activity | |
| Materials with higher efficiency and activated under the sunlight spectrum (band gap energy from 1.5 to 3.0eV) are today´s trends in newer photocatalysts for the hydrogen generation. The aim of the present study is to investigate alternative semiconductor materials to titanium dioxide for the generation of hydrogen with band gap energy values lower than that of TiO2 (<3.2eV). Examples of these are some transition metal ferrites such as CuFe2O4, CoFe2O4 and NiFe2O4. These ferrites were prepared by co-precipitation and heat treatment. Characterization was performed by XRD, BET, SEM, TEM and UV-Vis spectroscopy. Photocatalytic activity evaluation of the materials for hydrogen generation from water splitting under visible light was followed by gas chromatography. Results indicate that these materials showed corresponding spinel crystalline phases and nanometer particle sizes. Photocatalytic evaluation of these ferrites under visible light showed H2 yields up to 10.8 mmoles/gcat. These yields compared with those reported in the literature indicate that these materials can be considered as promising photocatalysts for hydrogen generation. | |
| 2012 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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| Nanostructured Ferrite as Photocatalysts for H2 Generation from Water Splitting and Sunlight.pdf | 1.1 MB | Adobe PDF | Visualizar/Abrir |