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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 9: KFM Poster Session

KFM 9.18: Poster

Montag, 18. März 2024, 18:00–20:00, Poster E

Defects, Fine and Hyperfine Interactions of the Historical Prussian Blue Compound Giese-Salt: Ammonium-Ferric-Hexacyano-Ferrate — •Sascha Albert Bräuninger¹, Damian Alexander Motz¹, Felix Seewald², Sebastian Praetz³, Carla Vogt⁴, Birgit Kannengiesser³, Hans-Henning Klauss², and Hermann Seifert¹ — ¹Institute for General Radiology and Medical Physics, University of Veterinary Medicine Hannover Foundation, Bischofsholer Damm 15, Hanover, 30173, Lower Saxony, Germany — ²Institute of Solid State and Materials Physics, TU Dresden,Haeckelstraße 3, Dresden, 01069, Saxony, Germany — ³Institute of Optics and Atomic Physics, TU Berlin, Hardenbergstraße 36, Berlin, 10623, Berlin, Germany — ⁴Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Straße 29, Freiberg, 09599, Saxony, Germany

Prussian Blue compounds (PBC) have shown a huge potantial of applications in physics, chemistry, medicine and radioecology, e.g., selected PBC are acting as efficient ion exchanger extracting the radioistope ¹³⁷Cs in solutions. In this study, the focus is the PBC ammonium iron(III) hexacyanoferrate(II) (NH₄{Fe(III)[Fe(II)(CN)₆]}), also known as Giese-salt, which is the ammonium derivative of the classic ("soluble") Prussian Blue as applied in veterinary medicine. Here, we investigate the Giese salt by a variety of techniques (XRD, ATR-IR, REM,...) highlighting the results of our Raman, XAFS and ⁵⁷Fe-Mössbauer study confirming a local distribution of hyperfine parameters as expected for a disordered system.

Keywords: Prussian Blue; Mössbauer; XAFS; Giese salt; Ammonium-Ferric-Hexacyano-Ferrate