Iron (Fe3+) loaded TiO2 nanocatalysts: characterization and photoreactivity
Iron (Fe 3+ ) loaded TiO 2 nanocatalysts were prepared by the photochemical reduction process. These supported nanocatalysts were characterized by X-ray diffraction (XRD), surface area (BET) measurements, scanning electron microscopy SEM with energy dispersive X-ray (EDX-elemental mapping) analysis...
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Published in | Reaction Kinetics, Mechanisms and Catalysis Vol. 100; no. 1; pp. 55 - 70 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Dordrecht
Springer Netherlands
01.06.2010
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Subjects | |
Online Access | Get full text |
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Summary: | Iron (Fe
3+
) loaded TiO
2
nanocatalysts were prepared by the photochemical reduction process. These supported nanocatalysts were characterized by X-ray diffraction (XRD), surface area (BET) measurements, scanning electron microscopy SEM with energy dispersive X-ray (EDX-elemental mapping) analysis and atomic force microscopy (AFM) with adhesion force measurements. XRD and BET results showed adsorption of iron species on the surface of the TiO
2
support. AFM and SEM images revealed obvious variations in the surface morphology of the support after loaded with Fe
3+
ions. Photocatalytic activities of the supported nanocatalysts were examined for decolorization and degradation processes of Congo red (CR) under UV irradiation. Fe
3+
ions improved the performances of the supported nanocatalysts by suppressing the electron–hole recombination reactions. Effects of Fe
3+
ion content and initial CR concentration were investigated. A tentative model was proposed for the photocatalytic degradation of CR. |
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ISSN: | 1878-5190 1588-2837 1878-5204 |
DOI: | 10.1007/s11144-010-0168-0 |