Abstract
A Pd K-edge X-ray absorption near edge structure (XANES) analysis for palladium hydride and carbide nanoparticles is presented. It is shown that the presence of H and C atoms changes the Pd unoccupied p-electronic states, affecting the near-edge fine structure. Quantitative XANES analysis is performed using a multidimensional interpolation approach. Theoretical models of PdH and PdC clusters are developed using Monte Carlo methods. The proposed technique allow us to determine hydrogen concentrations in palladium nanoparticles and correctly reproduce all experimental features of XANES spectra for palladium hydride and carbide nanoparticles.
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