Following iron speciation in the early stages of magnetite magnetosome biomineralization
| Autor: | Agata Olszewska, Tanya Prozorov, Emre Firlar, Teresa Perez-Gonzalez, Damien Faivre |
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| Přispěvatelé: | US DOE, Emergent Atom & Magnet Struct, Div Mat Sci & Engn, Ames Lab, Ames, IA 50011 USA, Max Planck Institute of Colloids and Interfaces, Max-Planck-Gesellschaft, Ames Lab, Emergent Atom & Magnet Struct, Div Mat Sci & Engn, Ames, IA 50011 USA |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
media_common.quotation_subject [SDV]Life Sciences [q-bio] Magnetosome Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Crystallinity chemistry.chemical_compound General Materials Science ComputingMilieux_MISCELLANEOUS media_common Magnetite Mechanical Engineering Spatially resolved 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Amorphous solid Speciation Chemical engineering chemistry Mechanics of Materials 0210 nano-technology Biomineralization |
| Zdroj: | Journal of Materials Research Journal of Materials Research, Cambridge University Press (CUP), 2016, 31 (5), pp.547-555. ⟨10.1557/jmr.2016.33⟩ Journal of Materials Research, Springer, 2016, 31 (5), pp.547-555. ⟨10.1557/jmr.2016.33⟩ |
| ISSN: | 0884-2914 2044-5326 |
| DOI: | 10.1557/jmr.2016.33⟩ |
| Popis: | Understanding magnetosome magnetite biomineralization is of fundamental interest to devising the strategies for bioinspired synthesis of magnetic materials at the nanoscale. Thus, we investigated the early stages of magnetosome formation in this work and correlated the size and emergent crystallinity of magnetosome nanoparticles with the changes in chemical environment of iron and oxygen by utilizing advanced analytical electron microscopy techniques. We observed that magnetosomes in the early stages of biomineralization with the sizes of 5–10 nm were amorphous, with a majority of iron present as Fe3+, indicative of ferric hydroxide. The magnetosomes with intermediate sizes showed partially crystalline structure with a majority of iron present as Fe3+ and trace amounts of Fe2+. The fully maturated magnetosomes were indexed to magnetite. Our approach provides spatially resolved structural and chemical information of individual magnetosomes with different particle sizes, attributed to magnetosomes at different stages of biomineralization. |
| Databáze: | OpenAIRE |
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