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Langmuir. 2009 Sep 1;25(17):10062-7. doi: 10.1021/la9010345.

Photosynthetic microorganism-mediated synthesis of akaganeite (beta-FeOOH) nanorods.

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1
Universite Paris Diderot (Paris 7), CNRS, UMR 7086, Interfaces, Traitements, Organisation et Dynamique des Systemes (ITODYS), F-75205 Paris Cedex 13, France. roberta.brayner@uni-paris-diderot.fr

Abstract

Common Anabaena and Calothrix cyanobacteria and Klebsormidium green algae are shown to form intracellularly akaganeite beta-FeOOH nanorods of well-controlled size and unusual morphology at room temperature. X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy X-ray energy dispersive spectrometry (SEM-EDS) analyses are used to investigate particle structure, size, and morphology. A mechanism involving iron-siderophore complex formation is proposed and compared with iron biomineralization in magnetotactic bacteria.

PMID:
19572505
DOI:
10.1021/la9010345
[Indexed for MEDLINE]
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