6533b831fe1ef96bd1298361

RESEARCH PRODUCT

Sodium Adsorption on the TiO2110 Surface an XAFS Structural Study

P. LagardeJ. JupilleSylvie BourgeoisAnne-marie FlankR. J. Prado

subject

Surface (mathematics)Materials scienceExtended X-ray absorption fine structureSodiumchemistry.chemical_elementCondensed Matter PhysicsAtomic and Molecular Physics and OpticsX-ray absorption fine structureBridging oxygenOxygen atomAdsorptionchemistryPhysical chemistryEquidistantMathematical Physics

description

The adsorption site of sodium atoms deposited onto a clean TiO2(110) surface has been determined by EXAFS. The best result is obtained for an 'in-between' site where the sodium is bound to two bridging oxygen atoms at 2.25 A and one in-plane one at 2.40 A in full agreement with DFT calculations. At higher coverage the site becomes a hollow site where Na is equidistant to the three oxygen atoms at 2.30 A.

https://doi.org/10.1238/physica.topical.115a00531