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Depth profile of alloying extent and composition in bimetallic nanoparticles investigated by in situ x-ray absorption spectroscopy
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10.1063/1.2755876
/content/aip/journal/apl/91/2/10.1063/1.2755876
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/2/10.1063/1.2755876

Figures

Image of FIG. 1.
FIG. 1.

(Color online) -weighted FT spectra for Johnson-Matthey 30% catalyst, (A) at the Pt edge, and (B) at the Ru edge performed at various conditions: (a) as-received state in solution; in solutions at (b) OCP, (c) , (d) 0.69, (e) , (f) 1.04, and (g) .

Image of Scheme 1.
Scheme 1.

Schematic representation of oxidation-dependent variations in alloying extent in bimetallic NPs. (case A) In as-received condition, (case B) in presence of methanol at OCP , (case C) in methanol at 0.59 and , (case D) in methanol at , (case E) and in methanol at .

Image of FIG. 2.
FIG. 2.

Variation of at various degrees of oxidation and potentials (see Scheme 1 for corresponding models).

Tables

Generic image for table
Table I.

Potential-dependent alloying extent variation and XAS structural parameters for bimetallic NPs.

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/content/aip/journal/apl/91/2/10.1063/1.2755876
2007-07-10
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Depth profile of alloying extent and composition in bimetallic nanoparticles investigated by in situ x-ray absorption spectroscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/2/10.1063/1.2755876
10.1063/1.2755876
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