Mössbauer Study of Microbial Synthesis of Iron-Containing Nanoparticles

Abstract:

Mössbauer studies of bioreduction products stabilized by acetone and ethanol were carried out at wide temperature range from 80 K to room temperature and in external magnetic field applied perpendicular to γ-beam at room temperature. The initial products (mixture of non-stoichiometric magnetite and maghemite) were formed during the iron reduction of synthesized ferrihydrite by bacterium G. ferrihydriticus. The addition of acetone and ethanol led to slight particle size decrease. The average size and magnetic moments were 11.2 nm and 524 µ_B, respectively.

• Periodical: Solid State Phenomena (Volumes 233-234)
• Pages: 766-770
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.233-234.766
• Online since: July 2015
• Authors: A.A. Shapkin*, N.I. Chistyakova, D.G. Zavarzina, T.N. Zhilina, V.S. Rusakov
• Keywords: Biomagnetite, Iron Oxide, Mössbauer Spectrometry

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