<div class="csl-bib-body">
<div class="csl-entry">Filzmoser, J. U., Eder, M. M. J., Kraushofer, F., Pavelec, J., & Parkinson, G. (2026, March 13). <i>Thermal CO₂ Activation and Carbonate Formation on Fe₂O₃(012)</i> [Conference Presentation]. DPG Spring Meeting 2026 of the Condensed Matter Section (SKM), Dresden, Germany.</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/227609
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dc.description.abstract
The adsorption of CO2 on hematite α-Fe2O3(012) has been investigated in ultra-high vacuum (UHV) using temperature-programmed desorption (TPD) and infrared reflection absorption spectroscopy (IRAS). CO₂ adsorption on this surface exhibits complex behavior, resulting in multiple desorption features in TPD. For coverages up to one molecule per unit cell (0.5 molecules per Fe2+ cation), two desorption features centered around 150 K and 220 K increase concurrently with increasing coverage. IRAS shows that this behavior originates from a thermally activated conversion of weakly bound, physisorbed CO2 into surface carbonate (CO32-) species at temperatures above 100 K, a process that directly competes with molecular desorption. By supplying CO₂ at temperatures just below the carbonate desorption temperature, higher carbonate coverages can be obtained. These findings contribute to our understanding of CO2 activation on Fe2O3(012) and will be a prerequisite for surface reaction studies.
en
dc.language.iso
en
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dc.subject
CO2 Activation
en
dc.subject
Carbonate
en
dc.subject
TPD
en
dc.subject
IRAS
en
dc.title
Thermal CO₂ Activation and Carbonate Formation on Fe₂O₃(012)
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
TU Wien, Austria
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dc.type.category
Conference Presentation
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tuw.researchTopic.id
M1
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tuw.researchTopic.name
Surfaces and Interfaces
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tuw.researchTopic.value
100
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tuw.publication.orgunit
E134-05 - Forschungsbereich Surface Physics
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tuw.publication.orgunit
E056-04 - Fachbereich TU-DX: Towards Applications of 2D Materials
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tuw.author.orcid
0000-0003-1314-9149
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tuw.author.orcid
0000-0001-8899-5652
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tuw.author.orcid
0000-0003-2457-8977
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tuw.event.name
DPG Spring Meeting 2026 of the Condensed Matter Section (SKM)
