Nano Archive

Atomic-Scale Structure of Biogenic Materials by Total X-ray Diffraction: A Study of Bacterial and Fungal MnOx

Petkov, V. and Ren, Y. and Saratovsky, I. and Pastén, P. and Gurr, S. J. and Hayward, M. A. and Poeppelmeier, K. R. and Gaillard, J.-F. (2009) Atomic-Scale Structure of Biogenic Materials by Total X-ray Diffraction: A Study of Bacterial and Fungal MnOx. ACS Nano, 3 (2). p. 441. ISSN 1936-0851

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Official URL: http://dx.doi.org/10.1021/nn800653a

Abstract

Biogenic materials are produced by microorganisms and are typically found in a nanophase state. As such, they are difficult to characterize structurally. In this report, we demonstrate how high-energy X-ray diffraction and atomic pair distribution function analysis can be used to determine the atomic-scale structures of MnOx produced by bacteria and fungi. These structures are well-defined, periodic, and species-specific, built of Mn−O6 octahedra forming birnessite-type layers and todorokite-type tunnels, respectively. The inherent structural diversity of biogenic material may offer opportunities for practical applications.

Item Type:Article
Subjects:Biomedical Science > Nanobiotechnology
Material Science > Bio materials
ID Code:7781
Deposited By:M T V
Deposited On:23 Nov 2009 13:12
Last Modified:23 Nov 2009 13:12

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