Quinson, Jonathan; Neumann, Sarah; Kacenauskaite, Laura; Bucher, Jan; Kirkensgaard, Jacob J. K.; Simonsen, Søren B.; Theil Kuhn, Luise; Zana, Alessandro; Vosch, Tom; Oezaslan, Mehtap; Kunz, Sebastian; Arenz, Matthias (2020). Solvent‐Dependent Growth and Stabilization Mechanisms of Surfactant‐Free Colloidal Pt Nanoparticles. Chemistry - a European journal, 26(41), pp. 9012-9023. Wiley-VCH 10.1002/chem.202001553
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Understanding the formation of nanoparticles (NPs) is key to develop materials by sustainable routes. The Co4CatTM process is a new synthesis of precious metal NPs in alkaline mono‐alcohols well‐suited to develop active nanocatalysts. The synthesis is ‘facile’, surfactant‐free and performed under mild conditions like low temperature. The reducing properties of the solvent are here shown to strongly influence the formation of Pt NPs. Based on the in situ formation of CO adsorbed on the NP surface by solvent oxidation, a model is proposed that accounts for the different growth and stabilization mechanisms as well as re‐dispersion properties of the surfactant‐free NPs in different solvents. Using in situ and ex situ characterizations, it is established that in methanol, a slow nucleation with a limited NP growth is achieved. In ethanol, a fast nucleation followed by continuous and pronounced particle sintering occurs.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Bucher, Jan Rudolf, Zana, Alessandro, Arenz, Matthias |
Subjects: |
500 Science > 570 Life sciences; biology 500 Science > 540 Chemistry |
ISSN: |
0947-6539 |
Publisher: |
Wiley-VCH |
Language: |
English |
Submitter: |
Matthias Arenz |
Date Deposited: |
03 Feb 2021 13:58 |
Last Modified: |
05 Dec 2022 15:44 |
Publisher DOI: |
10.1002/chem.202001553 |
BORIS DOI: |
10.48350/150935 |
URI: |
https://boris.unibe.ch/id/eprint/150935 |
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