Keywords
121Sb Mössbauer spectroscopy
methyl orange
photocatalytic decolorization
Sb-doped TiO2
Sb3+ electronic lone pair
stereochemical activity
Abstract
Ultraviolet photocatalytic experiments on the kinetics of decolorization of methyl orange and the 121Sb Mössbauer characterization of the title catalyst were performed. The stereochemically active electronic lone pair of Sb3+ was found to completely deactivate the neighboring oxygen vacancy as a recombination center towards the photogenerated electrons and holes.
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