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  Engineering gold-platinum core-shell nanoparticles by self-limitation in solution

Ledendecker, M., Paciok, P., Osowiecki, W. T., Pander, M., Heggen, M., Göhl, D., et al. (2022). Engineering gold-platinum core-shell nanoparticles by self-limitation in solution. Communications Chemistry, 5(1): 71. doi:10.1038/s42004-022-00680-w.

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Engineering gold-platinum core-shell nanoparticles by self-limitation in solution - s42004-022-00680-w.pdf (Publisher version), 4MB
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Engineering gold-platinum core-shell nanoparticles by self-limitation in solution - s42004-022-00680-w.pdf
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 Creators:
Ledendecker, Marc1, Author           
Paciok, Paul2, Author           
Osowiecki, Wojciech T.3, Author
Pander, Marc4, Author           
Heggen, Marc2, Author
Göhl, Daniel5, Author           
Kamat, Gaurav A.3, Author
Erbe, Andreas6, Author           
Mayrhofer, Karl J. J.7, 8, Author           
Alivisatos, A. Paul3, 9, 10, Author
Affiliations:
1Department of Technical Chemistry, Technical University Darmstadt, 64287 Darmstadt, Germany, ou_persistent22              
2Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons, Peter Grünberg Institute, Forschungszentrum Jülich, Jülich, 52425, Germany, ou_persistent22              
3Department of Chemistry, University of California, Berkeley, California, CA, 94720, USA, ou_persistent22              
4Interface Spectroscopy, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863358              
5Department of Technical Chemistry, Technical University Darmstadt, Alarich-Weiss-Straße 8, 64287 Darmstadt, Germany, ou_persistent22              
6Department of Materials Science and Engineering, NTNU - Norwegian University of Science and Technology, 7491 Trondheim, Norway, ou_persistent22              
7Helmholtz-Institute Erlangen-Nuremberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstrasse 3, 91058 Erlangen, Germany, ou_persistent22              
8Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany , ou_persistent22              
9Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA, ou_persistent22              
10Kavli Energy NanoScience Institute, Berkeley, CA, 94720, USA, ou_persistent22              

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 Abstract: Core-shell particles with thin noble metal shells represent an attractive material class with potential for various applications ranging from catalysis to biomedical and pharmaceutical applications to optical crystals. The synthesis of well-defined core-shell architectures remains, however, highly challenging. Here, we demonstrate that atomically-thin and homogeneous platinum shells can be grown via a colloidal synthesis method on a variety of gold nanostructures ranging from spherical nanoparticles to nanorods and nanocubes. The synthesis is based on the exchange of low binding citrate ligands on gold, the reduction of platinum and the subsequent kinetically hindered growth by carbon monoxide as strong binding ligand. The prerequisites for homogeneous growth are low core-binding ligands with moderate fast ligand exchange in solution, a mild reducing agent to mitigate homonucleation and a strong affinity of a second ligand system that can bind to the shell's surface. The simplicity of the described synthetic route can potentially be adapted to various other material libraries to obtain atomically smooth core-shell systems. Core-shell particles with thin noble metal shells represent an attractive material class with potential for various applications ranging from catalysis to biomedical applications, but the synthesis of well-defined core-shell architectures remains highly challenging. Here, the authors report the chemically induced self-limiting growth of atomically-thin and homogeneous platinum shells on a variety of gold nanostructures.

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Language(s): eng - English
 Dates: 2022-06-02
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s42004-022-00680-w
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Title: Communications Chemistry
Source Genre: Journal
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Publ. Info: London : Springer Nature
Pages: - Volume / Issue: 5 (1) Sequence Number: 71 Start / End Page: - Identifier: ISSN: 2399-3669
CoNE: https://pure.mpg.de/cone/journals/resource/2399-3669