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  Three-dimensional atomic mapping of ligands on palladium nanoparticles by atom probe tomography

Jang, K., Kim, S.-H., Jun, H., Jung, C., Yu, J., Lee, S., et al. (2021). Three-dimensional atomic mapping of ligands on palladium nanoparticles by atom probe tomography. Nature Communications, 12(1): 4301. doi:10.1038/s41467-021-24620-9.

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Three-dimensional atomic mapping of ligands on palladium nanoparticles by atom probe tomography - s41467-021-24620-9.pdf (Publisher version), 6MB
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Three-dimensional atomic mapping of ligands on palladium nanoparticles by atom probe tomography - s41467-021-24620-9.pdf
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 Creators:
Jang, Kyuseon1, Author
Kim, Se-Ho1, 2, Author              
Jun, Hosun1, Author              
Jung, Chanwon1, Author
Yu, Jiwon3, Author
Lee, Sangheon3, 4, Author              
Choi, Pyuck-Pa5, Author              
Affiliations:
1Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea, ou_persistent22              
2Atom Probe Tomography, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863384              
3Department of Chemical Engineering and Materials Science, Ewha Womans University, Seoul, Republic of Korea, ou_persistent22              
4Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea, ou_persistent22              
5Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea, ou_persistent22              

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Free keywords: halide; imaging method; ligand; model validation; nanoparticle; palladium; three-dimensional modeling; tomography
 Abstract: Capping ligands are crucial to synthesizing colloidal nanoparticles with functional properties. However, the synergistic effect between different ligands and their distribution on crystallographic surfaces of nanoparticles during colloidal synthesis is still unclear despite powerful spectroscopic techniques, due to a lack of direct imaging techniques. In this study, atom probe tomography is adopted to investigate the three-dimensional atomic-scale distribution of two of the most common types of these ligands, cetrimonium (C19H42N) and halide (Br and Cl) ions, on Pd nanoparticles. The results, validated using density functional theory, demonstrate that the Br anions adsorbed on the nanoparticle surfaces promote the adsorption of the cetrimonium cations through electrostatic interactions, stabilizing the Pd 111 facets. In contrast, the Cl anions are not strongly adsorbed onto the Pd surfaces. The high density of adsorbed cetrimonium cations for Br anion additions results in the formation of multiple-twinned nanoparticles with superior oxidation resistance. © 2021, The Author(s).

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 Dates: 2021-07-14
 Publication Status: Published in print
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 Identifiers: DOI: 10.1038/s41467-021-24620-9
BibTex Citekey: Jang2021
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 (1) Sequence Number: 4301 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723