Short range order in Pd and PdO nanoparticles embedded in carbonaceous matrix studied with the XAFS spectroscopy

Ryszard Diduszko; Robert Nietubyć; Elżbieta Czerwosz; Mirosław Kozłowski

doi:10.1117/12.2075019

25 November 2014 Short range order in Pd and PdO nanoparticles embedded in carbonaceous matrix studied with the XAFS spectroscopy

Ryszard Diduszko, Robert Nietubyć, Elżbieta Czerwosz, Mirosław Kozłowski

Author Affiliations +

Proceedings Volume 9290, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2014; 929018 (2014) https://doi.org/10.1117/12.2075019
Event: Symposium on Photonics Applications in Astronomy, Communications, Industry and High-Energy Physics Experiments, 2014, Warsaw, Poland

Abstract

The short range order around Pd atoms in nanometer-size grains embedded in carbonaceous films deposited with two-step process: physical vapor deposition (PVD) followed by chemical vapour deposition (CVD) was studied. The Pd K-edge X-ray Absorption Fine Structure Spectroscopy was applied. We have found that grains obtained in a sole PVD process contained metallic fcc palladium or amorphous palladium oxide dependently on Pd concentration and duration time of process. In the oxide fraction a short range order around Pd atoms was strongly reduced as compared to a reference PdO powder. Subsequent CVD resulted in pure Pd fcc crystallites. The accompanying annealing was found to predominantly determine the content and structure of formed Pd grains.

Citation Download Citation

Ryszard Diduszko, Robert Nietubyć, Elżbieta Czerwosz, and Mirosław Kozłowski "Short range order in Pd and PdO nanoparticles embedded in carbonaceous matrix studied with the XAFS spectroscopy", Proc. SPIE 9290, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2014, 929018 (25 November 2014); https://doi.org/10.1117/12.2075019

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