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Bacterial production of vanadium ferrite spinel (Fe,V) (sub 3) O (sub 4) nanoparticles

Victoria S. Coker, Gerrit Van der Laan, Neil D. Telling, Jonathan R. Lloyd, James M. Byrne, Elke Arenholz and Richard A. D. Pattrick
Bacterial production of vanadium ferrite spinel (Fe,V) (sub 3) O (sub 4) nanoparticles
Mineralogical Magazine (August 2020) 84 (4): 554-562


Biogenic nanoscale vanadium magnetite is produced by converting V(V)-bearing ferrihydrites through reductive transformation using the metal-reducing bacterium Geobacter sulfurreducens. With increasing vanadium in the ferrihydrite, the amount of V-doped magnetite produced decreased due to V-toxicity which interrupted the reduction pathway ferrihydrite-magnetite, resulting in siderite or goethite formation. Fe L2,3 and V L2,3 X-ray absorption spectra and data from X-ray magnetic circular dichroism analysis revealed the magnetite to contain the V in the Fe(III) Oh site, predominately as V(III) but always with a component of V(VI), present a consistent V(IV)/V(III) ratio in the range 0.28 to 0.33. The bacteriogenic production of V-doped magnetite nanoparticles from V-doped ferrihydrite is confirmed and the work reveals that microbial reduction of contaminant V(V) to V(III)/V(IV) in the environment will occur below the Fe-redox boundary where it will be immobilised in biomagnetite nanoparticles.

ISSN: 0026-461X
EISSN: 1471-8022
Serial Title: Mineralogical Magazine
Serial Volume: 84
Serial Issue: 4
Title: Bacterial production of vanadium ferrite spinel (Fe,V) (sub 3) O (sub 4) nanoparticles
Affiliation: University of Manchester, School of Earth & Environmental Sciences, Manchester, United Kingdom
Pages: 554-562
Published: 202008
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 61
Accession Number: 2020-080758
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Secondary Affiliation: Diamond Light Source, GBR, United KingdomKeele University, GBR, United KingdomUniversity of Bristol, GBR, United KingdomLawrence Berkeley National Laboratory, USA, United States
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2022, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 202049
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