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Precise AuxPt1−x alloy nanoparticle array of tunable composition for catalytic applications

A 3-dimensional Block Copolymer Micellar nanoLithography (BCML) process was used to prepare AuxPt1−x alloy nanoparticles (NPs) monodisperse in size and composition, strongly anchored onto SiO2-particles (0.2 wt.% AuxPt1−x/SiO2). The particles possess a face-centered cubic (fcc) crystal structure and...

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Hauptverfasser: Jahn, Sarah Renate (VerfasserIn) , Lechner, Sebastian James (VerfasserIn) , Freichels, Helene (VerfasserIn) , Möller, Martin (VerfasserIn) , Spatz, Joachim P. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 09 February 2016
In: Scientific reports
Year: 2016, Jahrgang: 6
ISSN:2045-2322
DOI:10.1038/srep20536
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1038/srep20536
Verlag, lizenzpflichtig, Volltext: https://www.nature.com/articles/srep20536
Volltext
Verfasserangaben:Sarah Jahn, Sebastian J. Lechner, Helene Freichels, Martin Möller & Joachim P. Spatz
Beschreibung
Zusammenfassung:A 3-dimensional Block Copolymer Micellar nanoLithography (BCML) process was used to prepare AuxPt1−x alloy nanoparticles (NPs) monodisperse in size and composition, strongly anchored onto SiO2-particles (0.2 wt.% AuxPt1−x/SiO2). The particles possess a face-centered cubic (fcc) crystal structure and their size could be varied from 3-12 nm. We demonstrate the uniformity of the Au/Pt composition by analyzing individual NPs by energy-dispersive X-ray spectroscopy. The strongly bound AuxPt1−x NPs catalyzed the oxidation of CO with high activity. Thermal ageing experiments in pure CO2 as well as in ambient atmosphere demonstrated stability of the size distribution for times as long as 22 h.
Beschreibung:Im Titel sind x und 1-x tiefgestellt
Gesehen am 30.04.2020
Beschreibung:Online Resource
ISSN:2045-2322
DOI:10.1038/srep20536

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