Controlled biomineralization of magnetite (Fe3O4) by Magnetospirillum gryphiswaldense

Cristina Moisescu; S. Bonneville; Dominique Jeanette Tobler; I. Ardelean; L.G. Benning

doi:10.1180/minmag.2008.072.1.333

Controlled biomineralization of magnetite (Fe₃O₄) by Magnetospirillum gryphiswaldense

Cristina Moisescu^*, S. Bonneville, Dominique Jeanette Tobler, I. Ardelean, L.G. Benning

^*Corresponding author af dette arbejde

23 Citationer (Scopus)

Abstract

Results from a study of the chemical composition and micro-structural characteristics of bacterial magnetosomes extracted from the magnetotactic bacterial strain Magnetospirillum gryphiswaldense are presented here. Using high-resolution transmission electron microscopy combined with selected-area electron diffraction and energy dispersive X-ray microanalysis, biogenic magnetite particles isolated from mature cultures were analysed for variations in crystallinity and particle size, as well as chain character and length. The analysed crystals showed a narrow size range (∼44-67 nm) with an average diameter of 46±6.8 nm, cuboctahedral morphologies and typical Gamma type crystal size distributions. The magnetite particles exhibited a high chemical purity (exclusively Fe₃O₄) and the majority fall within the single-magnetic-domain range.

Originalsprog	Engelsk
Tidsskrift	Mineralogical Magazine
Vol/bind	72
Udgave nummer	1
Sider (fra-til)	333-336
Antal sider	4
ISSN	0026-461X
DOI	https://doi.org/10.1180/minmag.2008.072.1.333
Status	Udgivet - 2008
Udgivet eksternt	Ja

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10.1180/minmag.2008.072.1.333

Controlled biomineralization of magnetite (Fe3O4) by Magnetospirillum gryphiswaldenseForlagets udgivne version, 378 KB

Citationsformater

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title = "Controlled biomineralization of magnetite (Fe3O4) by Magnetospirillum gryphiswaldense",

abstract = "Results from a study of the chemical composition and micro-structural characteristics of bacterial magnetosomes extracted from the magnetotactic bacterial strain Magnetospirillum gryphiswaldense are presented here. Using high-resolution transmission electron microscopy combined with selected-area electron diffraction and energy dispersive X-ray microanalysis, biogenic magnetite particles isolated from mature cultures were analysed for variations in crystallinity and particle size, as well as chain character and length. The analysed crystals showed a narrow size range (∼44-67 nm) with an average diameter of 46±6.8 nm, cuboctahedral morphologies and typical Gamma type crystal size distributions. The magnetite particles exhibited a high chemical purity (exclusively Fe3O4) and the majority fall within the single-magnetic-domain range.",

author = "Cristina Moisescu and S. Bonneville and Tobler, {Dominique Jeanette} and I. Ardelean and L.G. Benning",

year = "2008",

doi = "10.1180/minmag.2008.072.1.333",

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TY - JOUR

T1 - Controlled biomineralization of magnetite (Fe3O4) by Magnetospirillum gryphiswaldense

AU - Moisescu, Cristina

AU - Bonneville, S.

AU - Tobler, Dominique Jeanette

AU - Ardelean, I.

AU - Benning, L.G.

PY - 2008

Y1 - 2008

N2 - Results from a study of the chemical composition and micro-structural characteristics of bacterial magnetosomes extracted from the magnetotactic bacterial strain Magnetospirillum gryphiswaldense are presented here. Using high-resolution transmission electron microscopy combined with selected-area electron diffraction and energy dispersive X-ray microanalysis, biogenic magnetite particles isolated from mature cultures were analysed for variations in crystallinity and particle size, as well as chain character and length. The analysed crystals showed a narrow size range (∼44-67 nm) with an average diameter of 46±6.8 nm, cuboctahedral morphologies and typical Gamma type crystal size distributions. The magnetite particles exhibited a high chemical purity (exclusively Fe3O4) and the majority fall within the single-magnetic-domain range.

AB - Results from a study of the chemical composition and micro-structural characteristics of bacterial magnetosomes extracted from the magnetotactic bacterial strain Magnetospirillum gryphiswaldense are presented here. Using high-resolution transmission electron microscopy combined with selected-area electron diffraction and energy dispersive X-ray microanalysis, biogenic magnetite particles isolated from mature cultures were analysed for variations in crystallinity and particle size, as well as chain character and length. The analysed crystals showed a narrow size range (∼44-67 nm) with an average diameter of 46±6.8 nm, cuboctahedral morphologies and typical Gamma type crystal size distributions. The magnetite particles exhibited a high chemical purity (exclusively Fe3O4) and the majority fall within the single-magnetic-domain range.

U2 - 10.1180/minmag.2008.072.1.333

DO - 10.1180/minmag.2008.072.1.333

M3 - Journal article

AN - SCOPUS:57249108601

SN - 0026-461X

VL - 72

SP - 333

EP - 336

JO - Mineralogical Magazine

JF - Mineralogical Magazine

IS - 1

ER -

Controlled biomineralization of magnetite (Fe3O4) by Magnetospirillum gryphiswaldense

Abstract

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Controlled biomineralization of magnetite (Fe₃O₄) by Magnetospirillum gryphiswaldense