Nanocrystalline Todorokite-Like Manganese Oxide Produced by Bacterial Catalysis

Hack Sung Kim; Pablo A. Pastén; Jean François Gaillard; Peter C. Stair

doi:10.1021/ja0375784

Nanocrystalline Todorokite-Like Manganese Oxide Produced by Bacterial Catalysis

Hack Sung Kim, Pablo A. Pastén, Jean François Gaillard, Peter C. Stair^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

74 Scopus citations

Abstract

We describe the characterization of an unknown and difficult to identify but geochemically and environmentally significant MnO_x structure produced by a freshwater bacterium, Leptothrix discophora SP-6, using combined transmission electron microscopy (TEM), extended X-ray absorption fine structure (EXAFS), and UV Raman spectroscopy. The large surface-to-volume ratio of the needle-shaped nanocrystalline MnO₂ formed around the bacterial cells coupled to the porous, zeolite-like structure has the potential to catalyze reactions and oxidize and adsorb metals.

Original language	English (US)
Pages (from-to)	14284-14285
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	125
Issue number	47
DOIs	https://doi.org/10.1021/ja0375784
State	Published - Nov 26 2003

ASJC Scopus subject areas

General Chemistry
Biochemistry
Catalysis
Colloid and Surface Chemistry

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title = "Nanocrystalline Todorokite-Like Manganese Oxide Produced by Bacterial Catalysis",

abstract = "We describe the characterization of an unknown and difficult to identify but geochemically and environmentally significant MnOx structure produced by a freshwater bacterium, Leptothrix discophora SP-6, using combined transmission electron microscopy (TEM), extended X-ray absorption fine structure (EXAFS), and UV Raman spectroscopy. The large surface-to-volume ratio of the needle-shaped nanocrystalline MnO2 formed around the bacterial cells coupled to the porous, zeolite-like structure has the potential to catalyze reactions and oxidize and adsorb metals.",

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AU - Kim, Hack Sung

AU - Pastén, Pablo A.

AU - Gaillard, Jean François

AU - Stair, Peter C.

PY - 2003/11/26

Y1 - 2003/11/26

N2 - We describe the characterization of an unknown and difficult to identify but geochemically and environmentally significant MnOx structure produced by a freshwater bacterium, Leptothrix discophora SP-6, using combined transmission electron microscopy (TEM), extended X-ray absorption fine structure (EXAFS), and UV Raman spectroscopy. The large surface-to-volume ratio of the needle-shaped nanocrystalline MnO2 formed around the bacterial cells coupled to the porous, zeolite-like structure has the potential to catalyze reactions and oxidize and adsorb metals.

AB - We describe the characterization of an unknown and difficult to identify but geochemically and environmentally significant MnOx structure produced by a freshwater bacterium, Leptothrix discophora SP-6, using combined transmission electron microscopy (TEM), extended X-ray absorption fine structure (EXAFS), and UV Raman spectroscopy. The large surface-to-volume ratio of the needle-shaped nanocrystalline MnO2 formed around the bacterial cells coupled to the porous, zeolite-like structure has the potential to catalyze reactions and oxidize and adsorb metals.

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Nanocrystalline Todorokite-Like Manganese Oxide Produced by Bacterial Catalysis

Abstract

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