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Fast time-resolved pair distribution function studies of supported gold nanoparticle formation
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Haiyan Zhao
Published/Copyright:
January 31, 2012
Abstract
Fast, time-resolved pair distribution function (PDF) methods were applied in situ, to probe the mechanism and kinetics of supported gold nanoparticle formation. The PDF provides quantitative details on how the population and structure of different species evolve throughout the reaction. By fitting reaction models to the changes in species concentration, the reaction mechanism can be identified, with measurements at multiple temperatures allowing an estimation of the apparent activation energy. Here, for the formation of Au nanoparticles supported on γ-Al2O3, we find that the reaction follows a zeroth-order reaction mechanism with an activation energy of ∼73 kJ mol–1.
Keywords: High Energy X-ray; Catalysis; Kinetics; Supported Nanoparticle; pair distribution function (PDF)
Published Online: 2012-01-31
Published in Print: 2012-05
© by Oldenbourg Wissenschaftsverlag, Argonne, Germany
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Keywords for this article
High Energy X-ray;
Catalysis;
Kinetics;
Supported Nanoparticle;
pair distribution function (PDF)
Articles in the same Issue
- Preface
- Dynamic pair-density function method for neutron and X-ray inelastic scattering
- The three-dimensional pair distribution function analysis of disordered single crystals: basic concepts
- Quantitative nanostructure characterization using atomic pair distribution functions obtained from laboratory electron microscopes
- On the use of laboratory X-ray diffraction equipment for Pair Distribution Function (PDF) studies
- Atomic ordering in nanosized PtxAu1–x (x = 0, 0.51, 1) by resonant X-ray diffraction and differential atomic pair distribution functions
- Fast time-resolved pair distribution function studies of supported gold nanoparticle formation
- Rare Earth doped ceria: a combined X-ray and neutron pair distribution function study
- Reverse Monte Carlo study of Cu—O bond distortions in YBa2Cu3O6.9
- Development of the local and average structure of a V–Mo–Nb oxide catalyst with Mo5O14-like structure during synthesis from nanostructured precursors
- Variation in the ratio of Mg2Co and MgCo2 in amorphous-like mechanically alloyed MgxCo100–x using atomic pair distribution function analysis
- Pair distribution function analysis of amorphous geopolymer precursors and binders: the importance of complementary molecular simulations
- Static disorder and local structure in zinc(II) isonicotinate, a quartzlike metal–organic framework
