<div class="csl-bib-body">
<div class="csl-entry">Pramhaas, V., Unterhalt, H., Freund, H.-J., & Rupprechter, G. (2023). Polarization-Dependent Sum-Frequency-Generation Spectroscopy for In Situ Tracking of Nanoparticle Morphology. <i>Angewandte Chemie International Edition</i>, <i>62</i>(19), Article e202300230. https://doi.org/10.1002/anie.202300230</div>
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dc.identifier.issn
1433-7851
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/188305
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dc.description.abstract
The surface structure of oxide-supported metal nanoparticles can be determined via characteristic vibrations of adsorbed probe molecules such as CO. Usually, spectroscopic studies focus on peak position and intensity, which are related to binding geometries and number of adsorption sites, respectively. Employing two differently prepared model catalysts, it is demonstrated that polarization-dependent sum-frequency-generation (SFG) spectroscopy reveals the average surface structure and shape of the nanoparticles. SFG results for different particle sizes and morphologies are compared to direct real-space structure analysis by TEM and STM. The described feature of SFG could be used to monitor particle restructuring in situ and may be a valuable tool for operando catalysis.
en
dc.language.iso
en
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dc.publisher
WILEY-V C H VERLAG GMBH
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dc.relation.ispartof
Angewandte Chemie International Edition
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dc.subject
Metal Nanoparticles
en
dc.subject
Particle Morphology
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dc.subject
Sum Frequency Generation
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dc.subject
Vibrational Spectroscopy
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dc.subject
in Situ Spectroscopy
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dc.title
Polarization-Dependent Sum-Frequency-Generation Spectroscopy for In Situ Tracking of Nanoparticle Morphology
