Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 21st October 2020 from 07:00 AM to 07:00 PM (BST).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 8, 2016
Previous Article Next Article

X-ray spectroscopic analysis of Liesegang patterns in Mn–Fe-based Prussian blue analogs

Author affiliations

Abstract

We performed time-resolved X-ray fluorescence (XRF) and position-dependent X-ray absorption near-edge structure (XANES) measurements on gels containing Mn2+ and [Fe(CN)6]3− ions. A sample tube containing an agar gel mixed with 0.20 M MnCl2 solution and a water-glass gel mixed with 0.25 M K3[Fe(CN)6] solution was prepared for these X-ray spectroscopic analyses. Periodic bands that obeyed the empirical scaling laws characteristic of Liesegang bands formed beyond the turbid zone in the water-glass gel. XRF results demonstrated that the turbid zone and the periodic bands contained diffusive Mn and Fe compounds. XANES results indicated that the Fe local structure in the sample tube was nearly independent of positions and was predominantly [Fe(CN)6]. In contrast, the Mn local structure depended on the position. FEFF calculations suggested that Mn–Fe-based Prussian blue analogs, of which the most likely local structure is [Mn(NCFe)3O3K3], co-existed with [MnO6−nCln] (n = 0, 1) species and that their compositions were position-dependent.

Graphical abstract: X-ray spectroscopic analysis of Liesegang patterns in Mn–Fe-based Prussian blue analogs

Back to tab navigation

Article information


Submitted
06 May 2016
Accepted
21 Jun 2016
First published
28 Jun 2016

J. Anal. At. Spectrom., 2016,31, 1658-1672
Article type
Paper
Author version available

X-ray spectroscopic analysis of Liesegang patterns in Mn–Fe-based Prussian blue analogs

H. Hayashi and H. Abe, J. Anal. At. Spectrom., 2016, 31, 1658
DOI: 10.1039/C6JA00173D

Social activity

Search articles by author

Spotlight

Advertisements