Detection of Ambient Oxidation of Ultrasmall Supported Platinum Nanoparticles with Benchtop Powder X-Ray Diffraction

Detection of Ambient Oxidation of Ultrasmall Supported Platinum Nanoparticles with Benchtop Powder X-Ray Diffraction

The ability of a benchtop powder X-ray diffractometer with a solid state detector to observe the ambient oxidation of ultrasmall (sub 2.5 nm) Pt particles, previously seen only with synchrotron XRD, is demonstrated. The oxidation is corroborated with STEM imaging and fast Fourier transform analysis....

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Veröffentlicht in:Catalysis letters 2017-07, Vol.147 (7), p.1754-1764
Hauptverfasser: Banerjee, Ritubarna, Liu, Qiuli, Tengco, John Meynard Macasero, Regalbuto, John R.
Format: Artikel
Sprache:eng
Schlagworte:
Catalysis
Chemistry
Chemistry and Materials Science
Detection equipment
Fast Fourier transformations
Fourier transforms
Industrial Chemistry/Chemical Engineering
Metal catalysts
Nanoparticles
Organometallic Chemistry
Oxidation
Oxidation-reduction reactions
Physical Chemistry
Platinum
Powders (Particulate matter)
X ray powder diffraction
X-ray diffraction
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Zusammenfassung:The ability of a benchtop powder X-ray diffractometer with a solid state detector to observe the ambient oxidation of ultrasmall (sub 2.5 nm) Pt particles, previously seen only with synchrotron XRD, is demonstrated. The oxidation is corroborated with STEM imaging and fast Fourier transform analysis. Graphical Abstract
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-017-2060-2