Berlin 2018 – scientific programme
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O: Fachverband Oberflächenphysik
O 104: Oxides and Insulators: Adsorption I
O 104.5: Talk
Thursday, March 15, 2018, 17:45–18:00, MA 041
Adsorption of Water and Organic Molecules on Magnetite (111) — •Marcus Creutzburg1,2, Heshmat Noei1, Björn Arndt1,2, Elin Grånäs1, Gregor Feldbauer3, Kai Sellschopp3, and Andreas Stierle1,2 — 1Deutsches Elektronen-Synchrotron (DESY) — 2University of Hamburg — 3Institute of Advanced Ceramics, Hamburg University of Technology
Magnetite (Fe3O4) is an important transition metal oxide with diverse applications in catalysis, data storage and biomedical imaging. In a recent study magnetite nanoparticles linked by oleic acid molecules show exceptional isotropic mechanical properties [1]. To get insight into the interaction of these nanoparticles with organic molecules it is crucial to study flat single crystal surfaces. In this contribution, we present results on the adsorption of water and organic molecules like formic acid and oleic acid on the magnetite (111) surface under UHV conditions obtained by infrared reflection absorption spectroscopy and X-ray photoelectron spectroscopy. These findings are complemented by scanning tunneling microscopy results and surface X-ray diffraction measurements.
[1] A. Dreyer et al., Nature Materials 15, 522-528 (2016)