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- W1968993609 abstract "We present a short overview of surface studies on the main low-index surfaces of anatase, the technologically most interesting crystallographic form of titanium dioxide. Results are compared to the extensively investigated surfaces of TiO2 rutile. The anatase (1 0 1) surface is stable in a (1×1) configuration. It exhibits twofold coordinated (bridging) oxygen atoms and fivefold coordinated Ti atoms with a density comparable to the one found on rutile (1 1 0). Step edges are terminated by fourfold coordinated Ti sites. In contrast to rutile (1 1 0), anatase (1 0 1) does not show a strong tendency for losing twofold coordinated oxygen atoms upon annealing in ultrahigh vacuum. The apparent lack of point defects is also reflected in the adsorption/desorption behavior of water and methanol. The anatase (1 0 0) surface has the second-lowest surface energy and tends to from a (1×2) reconstruction. A model with (1 0 1)-oriented microfacets agrees with the observed features in atomically-resolved STM images. The (0 0 1) surface forms a (1×4) reconstruction that is well explained by an ‘ad-molecule’ model predicted from density functional theory calculations. A (1×3) reconstruction was observed for the anatase (1 0 3) surface." @default.
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- W1968993609 date "2003-10-15" @default.
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- W1968993609 title "One step towards bridging the materials gap: surface studies of TiO2 anatase" @default.
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- W1968993609 doi "https://doi.org/10.1016/s0920-5861(03)00378-x" @default.
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