Oxidation and reduction processes of platinum nanoparticles observed at the atomic scale by environmental transmission electron microscopy

Nanoscale ◽  
2014 ◽  
Vol 6 (21) ◽  
pp. 13113-13118 ◽  
Author(s):  
Hideto Yoshida ◽  
Hiroki Omote ◽  
Seiji Takeda
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Platinum Nanoparticles ◽  
Pt Nanoparticles ◽  
Surface Oxidation ◽  
Atomic Scale ◽  
Environmental Transmission ◽  
Reduction Processes ◽  
Transmission Electron ◽  
Environmental Transmission Electron Microscopy

Atomic layers of Pt oxides were gradually formed on the surface of Pt nanoparticles in O2 and the oxides were reduced to Pt promptly in both vacuum and gas including CO. H2O vapor suppressed the surface oxidation.

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