Back to Search
Start Over
Pt Diffusion Dynamics for the Formation Cr–PtCore–Shell Nanoparticles.
- Source :
-
Langmuir . Jun2015, Vol. 31 Issue 24, p6917-6923. 7p. - Publication Year :
- 2015
-
Abstract
- Layeredcore–shell bimetallic Cr–Pt nanoparticleswere prepared by the formation and later reduction of an intermediatePt-ion-containing supramolecular complex onto preformed Cr nanoparticles.The resultant nanoparticles were characterized by X-ray diffractionanalysis, transmission electron microscopy, X-ray photoelectron spectroscopy,and aberration-corrected scanning transmission electron microscopy.The results are consistent with the presence of Pt diffusion duringor after bimetallic nanoparticle formation, which has resulted ina Pt/Cr-alloyed core and shell. We postulate that such Pt diffusionoccurs by an electric-field-assisted process according to Cabrera–Motttheory and that it originates from the low work function of the preformedoxygen-defective Cr nanoparticles and the rather large electron affinityof Pt. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 07437463
- Volume :
- 31
- Issue :
- 24
- Database :
- Academic Search Index
- Journal :
- Langmuir
- Publication Type :
- Academic Journal
- Accession number :
- 103545643
- Full Text :
- https://doi.org/10.1021/acs.langmuir.5b01410