Atomic-Scale Structure of Biogenic Materials by Total X-ray Diffraction: A Study of Bacterial and Fungal MnOx
Loading...
Date
2009
Journal Title
Journal ISSN
Volume Title
Publisher
AMER CHEMICAL SOC
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-O-6 octahedra forming birnessite-type layers and todorokite-type tunnels, respectively. The inherent structural diversity of biogenic material may offer opportunities for practical applications.
Description
Keywords
biogenic materials, structure determination, X-ray diffraction, manganese oxides, MANGANESE OXIDES, NANOCRYSTALS, MINERALS, PROGRAM