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Combining Small-Angle X-ray Scattering and X-ray Powder Diffraction to Investigate Size, Shape and Crystallinity of Silver, Gold and Alloyed Silver-Gold Nanoparticles

Garcia, P. R. A. F.; Loza, K.; Daumann, S.; Grasmik, V.; Pappert, K.; Rostek, A.; Helmlinger, J.; Prymak, O.; Heggen, M.; Epple, M.; Oliveira, C. L. P.

Brazilian Journal of Physics, 2019, vol 49, 2, pp. 183-190

DOI:10.1007/s13538-019-00642-z

Abstract

The combination of simultaneous measurements of small and wide angle X-ray scattering (SAXS/WAXS–SWAXS) to investigate the overall size, shape, and crystallinity of silver nanoparticles and alloyed silver-gold nanoparticles in the size range of 8 to 80 nm is shown. The obtained results for overall size are in agreement with the particle size obtained by differential centrifugal sedimentation (DCS) and transmission electron microscopy (TEM). In addition to the overall size, SWAXS provided precise information about the crystallographic internal structure of the particles, providing a powerful multi-scale tool for structural characterization of the studied systems.

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