| Numéro |
J. Phys. IV France
Volume 07, Numéro C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
|
|
|---|---|---|
| Page(s) | C1-655 - C1-657 | |
| DOI | https://doi.org/10.1051/jp4:19971269 | |
7th INTERNATIONAL CONFERENCE ON FERRITES
J. Phys. IV France 07 (1997) C1-655-C1-657
DOI: 10.1051/jp4:19971269
1 Department of Physical Electronics, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152, Japan
2 Research Center for Carbon Recycling and Utilization, O-okayama, Meguro-ku, Tokyo, 152, Japan
© EDP Sciences 1997
J. Phys. IV France 07 (1997) C1-655-C1-657
DOI: 10.1051/jp4:19971269
Mechanism of Biological Fe3O4 Synthesis, in Relation to Ferrite Plating
M. Abe1 and Y. Tamaura21 Department of Physical Electronics, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152, Japan
2 Research Center for Carbon Recycling and Utilization, O-okayama, Meguro-ku, Tokyo, 152, Japan
Abstract
The mechanism of the magnetosome (Fe3O4) formations is elucidated from the basic findings on chemical reactions of iron oxides, especially those occurring in ferrite plating-a chemical process synthesizing spinel ferrite films from an aqueous solution. It is suggested that in both the biomineralization and the ferrite plating, (1) Fe2+ → Fe3+ oxidation by NaNO2 plays an essential role, (2) γ-FeOOH is formed as a precursor, and (3) Fe2+ ions are adsorbed on γ-FeOOH which is followed by spinel formation. It is also discussed how to synthesize ferrite films at room temperature by mimicking the biological Fe3O4 formation.
© EDP Sciences 1997