Atomic-scale structure of biogenic materials by total X-ray diffraction: a study of bacterial and fungal MnOx.
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 MnO(x) 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.
Petkov
V
V
Department of Physics, 203 Dow Science, Central Michigan University, Mt. Pleasant, Michigan 48859, USA. petkov@phy.cmich.edu
Ren
Y
Y
Saratovsky
I
I
Pastén
P
P
Gurr
S J
SJ
Hayward
M A
MA
Poeppelmeier
K R
KR
Gaillard
J-F
JF
D000164:Acremonium / Q000737:chemistry / Q000378:metabolism*; D018360:Crystallography, X-Ray; D042743:Leptothrix / Q000737:chemistry / Q000378:metabolism*; D017895:Manganese Compounds / Q000737:chemistry* / Q000378:metabolism*; D008903:Minerals / Q000737:chemistry / Q000378:metabolism; D010087:Oxides / Q000737:chemistry* / Q000378:metabolism*
D017895:Manganese Compounds; D008903:Minerals; D010087:Oxides; C027424:manganese oxide