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O. B. BONDARCHUK and J. M. WHITE
«WO3 Clusters on TiO2(110) Surface»
855–865 (2008)

PACS numbers: 61.46.Bc, 68.37.Ef, 68.47.Gh, 68.47.Jn, 68.65.La, 82.80.Pv, 82.65.+r

Isolated monodispersed clusters of WO3 can be formed on TiO2(110) surface via direct sublimation of WO3 onto the substrate at 300 K followed by annealing at 600 K. Clusters are stable up to 800 K. Combined data from scanning tunnelling microscopy (STM), x-ray photoelectron spectroscopy (XPS), quartz-crystal mass balance provide evidence that the clusters are cyclic trimmers, i.e. (WO3)3, with D3h symmetry.