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Synthesis and Characterization of a Novel Extracellular Biogenic Manganese Oxide (Bixbyite-like Mn2O3) Nanoparticle by Isolated Acinetobacter sp.

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Abstract

Recently, manganese oxides have been considered in the environmental remediation, MRI diagnosis and drug and pharmaceutical industries. Different numbers of physicochemical and biological methods have been reported for the preparation of nanoscale manganese oxides. Although manganese oxide biogenesis by bacterial species has been recognized as the major Mn-oxidizing agent in nature, in this research, for first time, we demonstrated the process which used to produce bixbyite-like Mn2O3 nanoparticles by isolated aerobic bacterium from Persian Gulf water. The 16SRNA sequencing showed that this isolate belong to a gram-negative Acinetobacter which produced nano Mn-oxide crystal particle. Characterization of complement morphology, size and chemical structure of these particles were determined by TEM, SEM, EDAX, XRD and FTIR. The data showed that this bacterium could produce nanosized extracellular bixbyite-like Mn2O3 which depend on enzymatic pathway.

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Acknowledgments

The authors wish to thank the University of Isfahan for financially supporting this study. We would like to thank TEM lab, Aarhus University.

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Authors and Affiliations

  1. Faculty of Sciences, Department of Biology, University of Isfahan, Azadi Sq., Daneshgah St., 81746-73441, Isfahan, I. R. Iran

    Baharak Hosseinkhani & Giti Emtiazi

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  1. Baharak Hosseinkhani
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  2. Giti Emtiazi
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Correspondence to Baharak Hosseinkhani.

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Hosseinkhani, B., Emtiazi, G. Synthesis and Characterization of a Novel Extracellular Biogenic Manganese Oxide (Bixbyite-like Mn2O3) Nanoparticle by Isolated Acinetobacter sp.. Curr Microbiol 63, 300–305 (2011). https://doi.org/10.1007/s00284-011-9971-8

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  • DOI: https://doi.org/10.1007/s00284-011-9971-8

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