EXAFS, XANES and TEM studies of Pt-Ni bimetallic catalysts

A. S. Bommannavar; P. A. Montano; M. J. Yacamán

doi:10.1016/0039-6028(85)90603-X

EXAFS, XANES and TEM studies of Pt-Ni bimetallic catalysts

A. S. Bommannavar, P. A. Montano, M. J. Yacamán

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Pt-Ni bimetallic particles have been studied by EXAFS and XANES techniques and electron diffraction. The near edge absorption measurements show conclusively that an alloy is formed in this system. By plotting the change in nearest neighbor distance as a function of concentration, it is shown that the linear relationship between concentration and interatomic distance (Vegard's law) which is commonly observed in bulk alloys is not followed in the case of small particles.

Original language	English (US)
Pages (from-to)	426-435
Number of pages	10
Journal	Surface Science
Volume	156
Issue number	PART 1
DOIs	https://doi.org/10.1016/0039-6028(85)90603-X
State	Published - Jun 3 1985
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(85)90603-X

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abstract = "Pt-Ni bimetallic particles have been studied by EXAFS and XANES techniques and electron diffraction. The near edge absorption measurements show conclusively that an alloy is formed in this system. By plotting the change in nearest neighbor distance as a function of concentration, it is shown that the linear relationship between concentration and interatomic distance (Vegard's law) which is commonly observed in bulk alloys is not followed in the case of small particles.",

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AU - Montano, P. A.

AU - Yacamán, M. J.

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Y1 - 1985/6/3

N2 - Pt-Ni bimetallic particles have been studied by EXAFS and XANES techniques and electron diffraction. The near edge absorption measurements show conclusively that an alloy is formed in this system. By plotting the change in nearest neighbor distance as a function of concentration, it is shown that the linear relationship between concentration and interatomic distance (Vegard's law) which is commonly observed in bulk alloys is not followed in the case of small particles.

AB - Pt-Ni bimetallic particles have been studied by EXAFS and XANES techniques and electron diffraction. The near edge absorption measurements show conclusively that an alloy is formed in this system. By plotting the change in nearest neighbor distance as a function of concentration, it is shown that the linear relationship between concentration and interatomic distance (Vegard's law) which is commonly observed in bulk alloys is not followed in the case of small particles.

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EXAFS, XANES and TEM studies of Pt-Ni bimetallic catalysts

Abstract

ASJC Scopus subject areas

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