Issue 57, 2020

Filling vacancies in a Prussian blue analogue using mechanochemical post-synthetic modification

Abstract

Mechanochemical grinding of polycrystalline powders of the Prussian blue analogue (PBA) Mn[Co(CN)6]2/31/3·xH2O and K3Co(CN)6 consumes the latter and chemically modifies the former. A combination of inductively-coupled plasma and X-ray powder diffraction measurements suggests the hexacyanometallate vacancy fraction in this modified PBA is reduced by approximately one third under the specific conditions we explore. We infer the mechanochemically-driven incorporation of [Co(CN)6]3− ions onto the initially-vacant sites, coupled with intercalation of charge-balancing K+ ions within the PBA framework cavities. Our results offer a new methodology for the synthesis of low-vacancy PBAs.

Graphical abstract: Filling vacancies in a Prussian blue analogue using mechanochemical post-synthetic modification

Supplementary files

Article information

Article type
Communication
Submitted
22 apr 2020
Accepted
04 iyn 2020
First published
04 iyn 2020
This article is Open Access
Creative Commons BY-NC license

Chem. Commun., 2020,56, 7873-7876

Filling vacancies in a Prussian blue analogue using mechanochemical post-synthetic modification

J. Cattermull, S. Wheeler, K. Hurlbutt, M. Pasta and A. L. Goodwin, Chem. Commun., 2020, 56, 7873 DOI: 10.1039/D0CC02922J

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