Abstract

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 Å and one in-plane one at 2.40 Å 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 Å.

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