Regensburg 2019 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 55: Metal Oxide Surfaces III: Adsorption and Reactivity
O 55.3: Vortrag
Mittwoch, 3. April 2019, 15:30–15:45, H5
Adsorption of Carboxylic Acids on Magnetite Single Crystal Surfaces — •Marcus Creutzburg1,2, Heshmat Noei1, Björn Arndt1,2, Vedran Vonk1, Elin Grånäs1, Kai Sellschopp3, Gregor Vonbun-Feldbauer3, and Andreas Stierle1,2 — 1DESY NanoLab, Deutsches Elektronen-Synchrotron, Hamburg — 2Fachbereich Physik, Universität Hamburg — 3Institute of Advanced Ceramics, Hamburg University of Technology
Magnetite (Fe3O4) is an important and diverse transition metal oxide with 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 give further insight on how these nanoparticles interact with organic molecules, it is crucial to study the flat single crystal surfaces. In this contribution, we present surface X-ray diffraction results in combination with infrared reflection absorption spectroscopy, X-ray photoelectron spectroscopy and scanning tunneling microscopy to investigate the clean magnetite (111) surface and study the adsorption of formic acid and oleic acid on the magnetite (111) and (001) surfaces under UHV conditions.
[1] A. Dreyer et al., Nature Materials 15, 522-528 (2016)