منابع مشابه
Band alignment of rutile and anatase TiO2
The most widely used oxide for photocatalytic applications owing to its low cost and high activity is TiO2. The discovery of the photolysis of water on the surface of TiO2 in 19721 launched four decades of intensive research into the underlying chemical and physical processes involved2–5. Despite much collected evidence, a thoroughly convincing explanation of why mixed-phase samples of anatase ...
متن کاملAcetone Chemistry On Oxidized Rutile TiO2(110)
Surface defects are known to dominate both the electronic and chemical properties of metal oxide surfaces, an object of much study for use in catalytic processes. In order to study surface chemistry in detail, an ultra-high vacuum (UHV) chamber was designed to combine a LEED and STM system. Construction is underway, with a reported initial base pressure of 10−9 Torr revealing no major leaks. On...
متن کاملHydrogen Impurity Defects in Rutile TiO2
Hydrogen-related defects play crucial roles in determining physical properties of their host oxides. In this work, we report our systematic experimental and theoretical (based on density functional theory) studies of the defect states formed in hydrogenated-rutile TiO2 in gaseous H2 and atomic H. In gas-hydrogenated TiO2, the incorporated hydrogen tends to occupy the oxygen vacancy site and neg...
متن کاملDye-Sensitized Nanocrystalline Rutile TiO2 Films
Dye-sensitized nanocrystalline rutile TiO2 solar cells were prepared, and the influence of Li and 1,2-dimethyl3-hexyl imidazolium ions in the electrolyte on the photovoltaic properties was compared. The electrolyte containing Li ions produced a lower open-circuit photovoltage than the electrolyte with 1,2-dimethyl-3-hexyl imidazolium ions, suggesting that the adsorption of Li ions to the rutile...
متن کاملSurface Structure of TiO2 Rutile (011) Exposed to Liquid Water
The rutile TiO2(011) surface exhibits a (2 × 1) reconstruction when prepared by standard techniques in ultrahigh vacuum (UHV). Here we report that a restructuring occurs upon exposing the surface to liquid water at room temperature. The experiment was performed in a dedicated UHV system, equipped for direct and clean transfer of samples between UHV and liquid environment. After exposure to liqu...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry
سال: 1962
ISSN: 0022-4332
DOI: 10.6028/jres.066a.047