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- W2166572042 abstract "The structural and electronic properties of bulk and both oxidized and reduced SnO2(1 1 0) surfaces as well as the adsorption process of O2 on the reduced surface have been investigated by periodic DFT calculations at B3LYP level. The lattice parameters, charge distribution, density of states and band structure are reported for the bulk and surfaces. Surface relaxation effects have been explicitly taken into account by optimizing slab models of nine and seven atomic layers representing the oxidized and reduced surfaces, respectively. The conductivity behavior of the reduced SnO2(1 1 0) surface is explained by a distribution of the electrons in the electronic states in the band gap induced by oxygen vacancies. Three types of adsorption approaches of O2 on the four-fold tin at the reduced SnO2(1 1 0) surface have been considered. The most exothermic channel corresponds to the adsorption of O2 parallel to the surface and to the four-fold tin row, and it is believed to be associated with the formation of a peroxo O22− species. The chemisorption of O2 on reduced SnO2(1 1 0) surface causes a significant depopulation of states along the band gap and it is shown to trap the electrons in the chemisorbed complex producing an electron-depleted space–charge layer in the inner surface region of the material in agreement with some experimental evidences." @default.
- W2166572042 created "2016-06-24" @default.
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- W2166572042 date "2002-06-01" @default.
- W2166572042 modified "2023-10-18" @default.
- W2166572042 title "Periodic study on the structural and electronic properties of bulk, oxidized and reduced SnO 2 (1 1 0) surfaces and the interaction with O 2" @default.
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- W2166572042 doi "https://doi.org/10.1016/s0039-6028(02)01542-x" @default.
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