Reversible oxidation of ethylene on ferroelectric BaTiO₃(001): An X-ray photoelectron spectroscopy study.

ABSTRACT: Adsorption and desorption of ethylene on BaO-terminated (001) barium titanate are investigated by X-ray photoelectron spectroscopy. Carbon is found in an oxidized state, at a binding energy similar to that resulting from CO adsorption on BaTiO₃(001). The amount of carbon adsorbed on the surface is also similar to the case of CO/BaTiO₃(001). Upon heating the substrate up to the loss of its ferroelectric polarization, the C 1s signal from the oxidized spectral region vanishes. At the same time, there was no noticeable oxygen depletion of the surface after repeated C₂H₄ adsorption and desorption. The substrate remains stable after repeated oxidative adsorption and desorption of ethylene. Desorption occurs at different temperatures, depending on the

SUBMITTER: Iancu AC 

PROVIDER: S-EPMC11328086 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature