DOI: https://doi.org/10.22184/1993-8578.2025.18.7-8.458.465

As part of the study, a method for modifying materials based on iron hexacyanoferrates (III) with nanoscale silver (HCF Fe–Ag) was developed. Iron (III) hexacyanoferrate (HCF Fe) was obtained by chemical co-precipitation in aqueous solutions. The presence of a basic crystalline phase of iron (III) hexacyanoferrate with a cubic face-centered crystal lattice (Fm3m) was found in the samples by powder diffractometry. To modify iron (III) hexacyanoferrate samples with silver, silver nitrate was used as a precursor, which was reduced with sodium borohydride. It has been established by powder diffractometry, scanning electron microscopy, and energy-dispersive X-ray spectroscopy that silver on the surface of iron hexacyanoferrate (III) is in the form of two crystalline phases – in the form of silver nanoparticles and silver hexacyanoferrate (III), which is formed as a result of the interaction of silver precursor with iron hexacyanoferrate (III) on the surface of a colloidal particle.