6533b853fe1ef96bd12ad4f1

RESEARCH PRODUCT

The defined adsorption site of sodium on the TiO2(110)–(1×1) surface

Jacques JupilleP. LagardeAnne-marie FlankR. J. PradoR. J. PradoSylvie Bourgeois

subject

Alkali metalsSodiumInorganic chemistrychemistry.chemical_element02 engineering and technologyExtended X-ray absorption fine structure (EXAFS)01 natural sciencesOxygenMetalAdsorption0103 physical sciencesAtomMaterials Chemistry010306 general physicsTitanium oxideExtended X-ray absorption fine structureChemistrySurfaces and Interfaces021001 nanoscience & nanotechnologyCondensed Matter PhysicsAlkali metalSurfaces Coatings and FilmsCrystallographyvisual_artvisual_art.visual_art_mediumAbsorption (chemistry)0210 nano-technology

description

The adsorption site of sodium on the TiO2(1 1 0)–(1 × 1) surface was studied by extended X-ray absorption fine structure. For coverage ranging between 0.25 and 0.5 ML, we find that sodium is on an ‘in-between' site where it is bound to two bridging oxygen atoms at 2.25 Å and one in-plane oxygen atom at 2.40 Å, in full agreement with DFT calculations. At higher coverage the site becomes an hollow site where the sodium atom is equidistant to the three oxygen atoms at 2.30 Å, while metallic sodium clusters are also formed at the surface.

yearjournalcountryeditionlanguage
2004-03-01Surface Science
https://doi.org/10.1016/j.susc.2004.01.054