Tunable Biogenic Manganese Oxides

Alexandr N. Simonov; Rosalie K. Hocking; Lizhi Tao; Thomas Gengenbach; Timothy Williams; Xi Ya Fang; Hannah J. King; Shannon A. Bonke; Dijon A. Hoogeveen; Christine A. Romano; Bradley M. Tebo; Lisandra L. Martin; William H. Casey; Leone Spiccia

doi:10.1002/chem.201702579

Tunable Biogenic Manganese Oxides

Alexandr N. Simonov, Rosalie K. Hocking, Lizhi Tao, Thomas Gengenbach, Timothy Williams, Xi Ya Fang, Hannah J. King, Shannon A. Bonke, Dijon A. Hoogeveen, Christine A. Romano, Bradley M. Tebo, Lisandra L. Martin, William H. Casey, Leone Spiccia

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

7 Scopus citations

Abstract

Influence of the conditions for aerobic oxidation of catalysed by the MnxEFG protein complex on the morphology, structure and reactivity of the resulting biogenic manganese oxides (MnO_x) is explored. Physical characterisation of MnO_x includes scanning and transmission electron microscopy, and X-ray photoelectron and K-edge Mn, Fe X-ray absorption spectroscopy. This characterisation reveals that the MnO_x materials share the structural features of birnessite, yet differ in the degree of structural disorder. Importantly, these biogenic products exhibit strikingly different morphologies that can be easily controlled. Changing the substrate-to-protein ratio produces MnO_x either as nm-thin sheets, or rods with diameters below 20 nm, or a combination of the two. Mineralisation in solutions that contain makes solids with significant disorder in the structure, while the presence of facilitates formation of more ordered materials. The (photo)oxidation and (photo)electrocatalytic capacity of the MnO_x minerals is examined and correlated with their structural properties.

Original language	English (US)
Pages (from-to)	13482-11349
Number of pages	2134
Journal	Chemistry - A European Journal
Volume	23
Issue number	54
DOIs	https://doi.org/10.1002/chem.201702579
State	Published - Sep 27 2017

Keywords

MnxEFG protein complex
biogenic materials
manganese
structural disorder
structure elucidation
tunable morphology

ASJC Scopus subject areas

General Chemistry
Catalysis
Organic Chemistry

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10.1002/chem.201702579

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title = "Tunable Biogenic Manganese Oxides",

abstract = "Influence of the conditions for aerobic oxidation of catalysed by the MnxEFG protein complex on the morphology, structure and reactivity of the resulting biogenic manganese oxides (MnOx) is explored. Physical characterisation of MnOx includes scanning and transmission electron microscopy, and X-ray photoelectron and K-edge Mn, Fe X-ray absorption spectroscopy. This characterisation reveals that the MnOx materials share the structural features of birnessite, yet differ in the degree of structural disorder. Importantly, these biogenic products exhibit strikingly different morphologies that can be easily controlled. Changing the substrate-to-protein ratio produces MnOx either as nm-thin sheets, or rods with diameters below 20 nm, or a combination of the two. Mineralisation in solutions that contain makes solids with significant disorder in the structure, while the presence of facilitates formation of more ordered materials. The (photo)oxidation and (photo)electrocatalytic capacity of the MnOx minerals is examined and correlated with their structural properties.",

keywords = "MnxEFG protein complex, biogenic materials, manganese, structural disorder, structure elucidation, tunable morphology",

author = "Simonov, {Alexandr N.} and Hocking, {Rosalie K.} and Lizhi Tao and Thomas Gengenbach and Timothy Williams and Fang, {Xi Ya} and King, {Hannah J.} and Bonke, {Shannon A.} and Hoogeveen, {Dijon A.} and Romano, {Christine A.} and Tebo, {Bradley M.} and Martin, {Lisandra L.} and Casey, {William H.} and Leone Spiccia",

note = "Publisher Copyright: {\textcopyright} 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2017",

month = sep,

day = "27",

doi = "10.1002/chem.201702579",

language = "English (US)",

volume = "23",

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journal = "Chemistry - A European Journal",

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T1 - Tunable Biogenic Manganese Oxides

AU - Simonov, Alexandr N.

AU - Hocking, Rosalie K.

AU - Tao, Lizhi

AU - Gengenbach, Thomas

AU - Williams, Timothy

AU - Fang, Xi Ya

AU - King, Hannah J.

AU - Bonke, Shannon A.

AU - Hoogeveen, Dijon A.

AU - Romano, Christine A.

AU - Tebo, Bradley M.

AU - Martin, Lisandra L.

AU - Casey, William H.

AU - Spiccia, Leone

PY - 2017/9/27

Y1 - 2017/9/27

N2 - Influence of the conditions for aerobic oxidation of catalysed by the MnxEFG protein complex on the morphology, structure and reactivity of the resulting biogenic manganese oxides (MnOx) is explored. Physical characterisation of MnOx includes scanning and transmission electron microscopy, and X-ray photoelectron and K-edge Mn, Fe X-ray absorption spectroscopy. This characterisation reveals that the MnOx materials share the structural features of birnessite, yet differ in the degree of structural disorder. Importantly, these biogenic products exhibit strikingly different morphologies that can be easily controlled. Changing the substrate-to-protein ratio produces MnOx either as nm-thin sheets, or rods with diameters below 20 nm, or a combination of the two. Mineralisation in solutions that contain makes solids with significant disorder in the structure, while the presence of facilitates formation of more ordered materials. The (photo)oxidation and (photo)electrocatalytic capacity of the MnOx minerals is examined and correlated with their structural properties.

AB - Influence of the conditions for aerobic oxidation of catalysed by the MnxEFG protein complex on the morphology, structure and reactivity of the resulting biogenic manganese oxides (MnOx) is explored. Physical characterisation of MnOx includes scanning and transmission electron microscopy, and X-ray photoelectron and K-edge Mn, Fe X-ray absorption spectroscopy. This characterisation reveals that the MnOx materials share the structural features of birnessite, yet differ in the degree of structural disorder. Importantly, these biogenic products exhibit strikingly different morphologies that can be easily controlled. Changing the substrate-to-protein ratio produces MnOx either as nm-thin sheets, or rods with diameters below 20 nm, or a combination of the two. Mineralisation in solutions that contain makes solids with significant disorder in the structure, while the presence of facilitates formation of more ordered materials. The (photo)oxidation and (photo)electrocatalytic capacity of the MnOx minerals is examined and correlated with their structural properties.

KW - MnxEFG protein complex

KW - biogenic materials

KW - manganese

KW - structural disorder

KW - structure elucidation

KW - tunable morphology

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JF - Chemistry - A European Journal

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ER -

Tunable Biogenic Manganese Oxides

Abstract

Keywords

ASJC Scopus subject areas

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