Surface Chemistry of Ag Particles: Identification of Oxide Species by Aberration-Corrected TEM and by DFT Calculations

Authors


  • The work in Berlin is part of the EnerChem project of the Max-Planck-Gesellschaft. T.J. gratefully acknowledges support by the “Fonds der Chemischen Industrie” and the “Deutsche Forschungsgemeinschaft (DFG)” within the Emmy-Noether Program. The authors thank Prof. Claus, TU Darmstadt, for providing the samples which were prepared within the “Brückenschlag” Project of the DFG.

Abstract

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Edges and steps have been identified as the locations of surface (O2) and subsurface oxygen atoms (O1) on silver particles by means of DFT calculations and aberration-corrected transmission electron microscopy. The experimental technique allows surface features, such as terraces, steps, and edges, to be clearly imaged (see picture) by eliminating the Fresnel fringes.

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