Porous Structural Properties of K or Na-Co Hexacyanoferrates as Efficient Materials for CO₂ Capture.

ABSTRACT: The stoichiometry of the components of hexacyanoferrate materials affecting their final porosity properties and applications in CO₂ capture is an issue that is rarely studied. In this work, the effect that stoichiometry of all element components and oxidation states of transition metals has on the structures of mesoporous K or Na-cobalt hexacyanoferrates (CoHCFs) and CO₂ removal is reported. A series of CoHCFs model systems are synthesized using the co-precipitation method with varying amounts of Co ions. CoHCFs are characterized by N₂ adsorption, TGA, FTIR-ATR, XRD, and XPS. N₂ adsorption results reveal a more developed external surface area (72.69-172.18 m²/g) generated in samples containing mixtures of K⁺/Fe²⁺/

SUBMITTER: Frias-Urena PM 

PROVIDER: S-EPMC9863694 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature