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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Noei, Heshmat
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Probing active sites on Pd/Pt alloy nanoparticles by CO adsorptioncitations
- 2024Probing Active Sites on Pd/Pt Alloy Nanoparticles by CO Adsorption
- 2022Adsorption of oleic acid on magnetite facets
- 2022Adsorption of oleic acid on magnetite facetscitations
- 2022Strengthening Engineered Nanocrystal Three-Dimensional Superlattices via Ligand Conformation and Reactivitycitations
- 2021A model study on controlling dealloying corrosion attack by lateral modification of surfactant inhibitorscitations
- 2021A model study on controlling dealloying corrosion attack by lateral modification of surfactant inhibitorscitations
- 2021Heterogeneous Adsorption and Local Ordering of Formate on a Magnetite Surfacecitations
- 2020Lateral Variation of the Native Passive Film on Super Duplex Stainless Steel Resolved by Synchrotron Hard X-Ray Photoelectron Emission Microscopycitations
- 2019Surface Reconstruction under the Exposure of Electric Fields Enhances the Reactivity of Donor-Doped SrTiO$_{3}$citations
- 2019Tuning the Elasticity of Cross-Linked Gold Nanoparticle Assembliescitations
- 2019Elasticity of cross-linked titania nanocrystal assemblies probed by AFM-bulge testscitations
- 2019Modulating the Mechanical Properties of Supercrystalline Nanocomposite Materials via Solvent–Ligand Interactionscitations
- 2018Adsorption of acetone on rutile TiO2: a DFT and FTIRS study
- 2015Ionic Liquid-Assisted Sonochemical Preparation of CeO2 Nanoparticles for CO Oxidationcitations
- 2015The Interaction of Formic Acid with Zinc Oxide: A Combined Experimental and Theoretical Study on Single Crystal and Powder Samplescitations
- 2012Rare-earth substituted HfO2 thin films grown by metalorganic chemical vapor deposition
- 2012The Surface Science Approach for Understanding Reactions on Oxide Powders: The Importance of IR Spectroscopycitations
- 2011Novel synthesis of mesoporous nanocomposite Co/Al2O3 catalysts for Fischer-Tropsch and higher alcohol synthesis
- 2010Hydrogen Loading of Oxide Powder Particles: A Transmission IR Study for the Case of Zinc Oxidecitations
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document
Adsorption of oleic acid on magnetite facets
Abstract
The microscopic understanding of the atomic structure and interaction at carboxylic acid/oxide interfaces is an important step towards tailoring the mechanical properties of nanocomposite materials assembled from metal oxide nanoparticles functionalized by organic molecules. We have studied the adsorption of oleic acid (C17H33COOH) on the most prominent magnetite (001) and (111) crystal facets at room temperature using low energy electron diffraction, surface X-ray diffraction and infrared vibrational spectroscopy complemented with molecular dynamics simulations used to infer specific hydrogen bonding motifs between oleic acid and oleate. Our experimental and theoretical results give evidence that oleic acid adsorbs dissociatively on both facets at lower coverages. At higher coverages, the more pronounced molecular adsorption causes hydrogen bond formation between the carboxylic groups, leading to a more upright orientation of the molecules on the (111) facet in conjunction with the formation of a denser layer, as compared to the (001) facet. This is evidenced by the C=O double bond infrared line shape, in depth molecular dynamics bond angle orientation and hydrogen bond analysis, as well as X-ray reflectivity layer electron density profile determination. Such a higher density can explain the higher mechanical strength of nanocomposite materials based on magnetite nanoparticles with larger (111) facets.