Badania struktury nanokryształów metali metodą EXAFS na przykładzie układu Pd-Co

Bogusław Mierzwa

Abstract

The principal aim of the thesis was to deal with the question in what way EXAFS structural parameters obtained from the calculations reflect the real structure of the studied materials, which factors can obscure the results of analysis and whether the obtained from calculations local structure parameters sufficiently describe the structure of the nanocrystalline solids. The system studied was the model Pd-Co on SiO2 catalyst. Measurements have been performed using the constructed laboratory EXAFS spectrometer and synchrotron EXAFS facility. The influence of nanocrystal structure on EXAFS spectra has been analyzed by computer simulations of model Pd-Co clusters using energy minimization and molecular dynamics methods. All the calculations have been done with a computer programs made by the author especially for the purpose.
Diploma typeDoctor of Philosophy
Author Bogusław Mierzwa (FP)
Bogusław Mierzwa,,
- Faculty of Physics
Title in PolishBadania struktury nanokryształów metali metodą EXAFS na przykładzie układu Pd-Co
Languagepl polski
Certifying UnitFaculty of Physics (FP)
Disciplinephysics / (physical sciences domain) / (physical sciences)
Defense Date01-01-2001
Supervisor Jerzy Pielaszek (FP)
Jerzy Pielaszek,,
- Faculty of Physics

Pages178
Keywords in Polishmonokryształy, metale, spektroskopia rentgenowska, badania strukturalne kryształów
Abstract in EnglishThe principal aim of the thesis was to deal with the question in what way EXAFS structural parameters obtained from the calculations reflect the real structure of the studied materials, which factors can obscure the results of analysis and whether the obtained from calculations local structure parameters sufficiently describe the structure of the nanocrystalline solids. The system studied was the model Pd-Co on SiO2 catalyst. Measurements have been performed using the constructed laboratory EXAFS spectrometer and synchrotron EXAFS facility. The influence of nanocrystal structure on EXAFS spectra has been analyzed by computer simulations of model Pd-Co clusters using energy minimization and molecular dynamics methods. All the calculations have been done with a computer programs made by the author especially for the purpose.
Thesis file
Mierzwa_Boguslaw_badania.pdf 8.93 MB
Citation count*4 (2015-07-23)

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