K. Asakura et al., Anisotropic arrangement of Mo species highly dispersed on TiO2(110) surface demonstrated by polarization dependent total reflection fluorescence EXAFS, JPN J A P 1, 38, 1999, pp. 40-43
Mo species on TiO2(110) surface were studied by means of Polarization Depen
dent Total Reflection Fluorescence EXAFS. The structure and orientation of
Mo species are strongly affected by the pretreatment conditions and impurit
y. Mo dimer oriented to [1<1(1)over bar 0 >] direction and Mo chain structu
re along [001] are present when they are prepared under oxidative condition
s and reductive conditions, respectively. On the other hand, Mo tetrahedral
monomer is formed when Na+ and K+ are present on the surface.