Abstract
Mo species on TiO2(110) surface were studied by means of Polarization Dependent Total Reflection Fluorescence EXAFS. The structure and orientation of Mo species are strongly affected by the pretreatment conditions and impurity. Mo dimer oriented to [11̄0] direction and Mo chain structure along [001] are present when they are prepared under oxidative conditions and reductive conditions, respectively. On the other hand, Mo tetrahedral monomer is formed when Na+ and K+ are present on the surface.
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