Issue 27, 2021

Iron phosphate mediated magnetite synthesis: a bioinspired approach

Abstract

The biomineralization of intracellular magnetite in magnetotactic bacteria (MTB) is an area of active investigation. Previous work has provided evidence that magnetite biomineralization begins with the formation of an amorphous phosphate-rich ferric hydroxide precursor phase followed by the eventual formation of magnetite within specialized vesicles (magnetosomes) through redox chemical reactions. Although important progress has been made in elucidating the different steps and possible precursor phases involved in the biomineralization process, many questions still remain. Here, we present a novel in vitro method to form magnetite directly from a mixed valence iron phosphate precursor, without the involvement of other known iron hydroxide precursors such as ferrihydrite. Our results corroborate the idea that phosphate containing phases likely play an iron storage role during magnetite biomineralization. Further, our results help elucidate the influence of phosphate ions on iron chemistry in groundwater and wastewater treatment.

Graphical abstract: Iron phosphate mediated magnetite synthesis: a bioinspired approach

Supplementary files

Article information

Article type
Edge Article
Submitted
29 Dec 2020
Accepted
10 Jun 2021
First published
10 Jun 2021
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2021,12, 9458-9465

Iron phosphate mediated magnetite synthesis: a bioinspired approach

G. Mirabello, M. GoodSmith, P. H. H. Bomans, L. Stegbauer, D. Joester and G. de With, Chem. Sci., 2021, 12, 9458 DOI: 10.1039/D0SC07079C

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