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Isolated iron(III)-oxo clusters were synthesized onto TiO 2 using atomic layer deposition. The Fe x O y /TiO 2 nanocomposites have unique properties that enable not only absorption of visible light, but efficient photocatalysis as demonstrated by methylene blue degradation. The localization of photogenerated electrons in core TiO 2 nanocrystallites upon visible light excitation demonstrates coupling of conduction bands of mixed oxides. The redox properties of photogenerated charges in nanocomposites were studied using in situ electron paramagnetic resonance spectroscopy.
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Libera et al. (2009) studied this question.
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