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https://hdl.handle.net/20.500.12104/72413| Title: | On the role of Fe3+ions in FexOy/C catalysts for hydrogen productionfrom the photodehydrogenation of ethanol |
| Keywords: | FexOy/C catalysts;hydrogen production;rietveld analysis;non-local density functional theory;ethanol photodehydrogenation |
| Publisher: | Journal of Hazardous Materials 263P (2013) 11–19 |
| Description: | FexOy/C photocatalysts at different iron content were prepared by the incipient wet impregnation methodand calcined at 773 K. The photocatalysts were characterized by means of nitrogen adsorption–desorptionisotherms, surface fractal dimension, non-local density functional theory, X-ray diffraction, Rietveldrefinement and UV–vis spectroscopy. The photocatalytic activity was evaluated using the photodehy-drogenation of ethanol as a model reaction for the production of hydrogen. The specific surface areasof FexOy/C substrates, with 15, 20 and 30 wt% iron content, diminished from 638 to 490 m2/g, as theiron content increased. X-ray diffraction analysis showed that iron oxides coexist as wustite and mag-netite in samples with Fe contents of 15 and 20 wt%; for sample with 30 wt% Fe, wustite, magnetite andhematite phases were observed. The photophysical, textural and structural properties were modified bythe hematite phase formed by thermal treatment. The Rietveld refinements denoted changes in occu-pancy of Fe3+and Fe2+in FexOycrystallites. A relationship between the Fe3+ions content and the reactivityfor the hydrogen production from the photodehydrogenation of ethanol (from 1360 to 2125 mol h−1),was evidenced. |
| URI: | https://hdl.handle.net/20.500.12104/72413 |
| Other Identifiers: | Galindo-Hernández, F., Wang, J.-A., Chen, L., Bokhimi, X., Gómez, R., Pérez-Larios, A., & Nava Entzana, N. (2013). On the role of Fe3+ ions in FexOy/C catalysts for hydrogen production from the photodehydrogenation of ethanol. Journal of Hazardous Materials, 263 Pt 1, 11–9. doi:10.1016/j.jhazmat.2013.08.015 0304-3894 http://148.202.112.41:8080/jspui/handle/123456789/158 |
| Appears in Collections: | CUALTOS |
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