Biogenic vs. abiogenic magnetite nanoparticles: A XMCD study

Claire Carvallo; Philippe Sainctavit; Marie Anne Arrio; Nicolas Menguy; Yuheng Wang; Georges Ona-Nguema; Sandrine Brice-Profeta

doi:10.2138/am.2008.2713

Biogenic vs. abiogenic magnetite nanoparticles: A XMCD study

Claire Carvallo
, Philippe Sainctavit
, Marie Anne Arrio
, Nicolas Menguy
, Yuheng Wang
, Georges Ona-Nguema
, Sandrine Brice-Profeta

Research output: Contribution to journal › Article › peer-review

66 Scopus citations

Abstract

X-ray magnetic circular dichroism (XMCD) experiments were carried out to compare the Fe²⁺/Fe³⁺ ratio in nanomagnetite chemically produced from lepidocrocite and nanomagnetite biogenically produced by the Fe-reducing bacterium Shewanella putrefaciens. Together with TEM imaging, these measurements showed that the biotic magnetite nanoparticles were of excellent quality, with small size dispersion and high crystallinity. From the XMCD measurements, it could be shown that the biogenic nanomagnetite contained a higher amount of Fe²⁺ than the abiogenic nanomagnetite.

Original language	English
Pages (from-to)	880-885
Number of pages	6
Journal	American Mineralogist
Volume	93
Issue number	5-6
DOIs	https://doi.org/10.2138/am.2008.2713
State	Published - 2008
Externally published	Yes

Keywords

Biomineralization
Nanomagnetite
Shewanella putrefaciens
XMCD

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10.2138/am.2008.2713

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title = "Biogenic vs. abiogenic magnetite nanoparticles: A XMCD study",

abstract = "X-ray magnetic circular dichroism (XMCD) experiments were carried out to compare the Fe2+/Fe3+ ratio in nanomagnetite chemically produced from lepidocrocite and nanomagnetite biogenically produced by the Fe-reducing bacterium Shewanella putrefaciens. Together with TEM imaging, these measurements showed that the biotic magnetite nanoparticles were of excellent quality, with small size dispersion and high crystallinity. From the XMCD measurements, it could be shown that the biogenic nanomagnetite contained a higher amount of Fe2+ than the abiogenic nanomagnetite.",

keywords = "Biomineralization, Nanomagnetite, Shewanella putrefaciens, XMCD",

author = "Claire Carvallo and Philippe Sainctavit and Arrio, \{Marie Anne\} and Nicolas Menguy and Yuheng Wang and Georges Ona-Nguema and Sandrine Brice-Profeta",

year = "2008",

doi = "10.2138/am.2008.2713",

language = "英语",

volume = "93",

pages = "880--885",

journal = "American Mineralogist",

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publisher = "Walter de Gruyter GmbH",

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TY - JOUR

T1 - Biogenic vs. abiogenic magnetite nanoparticles

T2 - A XMCD study

AU - Carvallo, Claire

AU - Sainctavit, Philippe

AU - Arrio, Marie Anne

AU - Menguy, Nicolas

AU - Wang, Yuheng

AU - Ona-Nguema, Georges

AU - Brice-Profeta, Sandrine

PY - 2008

Y1 - 2008

N2 - X-ray magnetic circular dichroism (XMCD) experiments were carried out to compare the Fe2+/Fe3+ ratio in nanomagnetite chemically produced from lepidocrocite and nanomagnetite biogenically produced by the Fe-reducing bacterium Shewanella putrefaciens. Together with TEM imaging, these measurements showed that the biotic magnetite nanoparticles were of excellent quality, with small size dispersion and high crystallinity. From the XMCD measurements, it could be shown that the biogenic nanomagnetite contained a higher amount of Fe2+ than the abiogenic nanomagnetite.

AB - X-ray magnetic circular dichroism (XMCD) experiments were carried out to compare the Fe2+/Fe3+ ratio in nanomagnetite chemically produced from lepidocrocite and nanomagnetite biogenically produced by the Fe-reducing bacterium Shewanella putrefaciens. Together with TEM imaging, these measurements showed that the biotic magnetite nanoparticles were of excellent quality, with small size dispersion and high crystallinity. From the XMCD measurements, it could be shown that the biogenic nanomagnetite contained a higher amount of Fe2+ than the abiogenic nanomagnetite.

KW - Biomineralization

KW - Nanomagnetite

KW - Shewanella putrefaciens

KW - XMCD

UR - https://www.scopus.com/pages/publications/46649113960

U2 - 10.2138/am.2008.2713

DO - 10.2138/am.2008.2713

M3 - 文章

AN - SCOPUS:46649113960

SN - 0003-004X

VL - 93

SP - 880

EP - 885

JO - American Mineralogist

JF - American Mineralogist

IS - 5-6

ER -

Biogenic vs. abiogenic magnetite nanoparticles: A XMCD study

Abstract

Keywords

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