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

Catalysis
Organic Chemistry

Access to Document

10.1002/chem.201702579

Cite this

@article{651f2d86cbbd4b259862b2fa71d4dd55,

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 = "Funding Information: The authors thank the Monash Centre for Electron Microscopy for providing access to the facilities, the Australian Synchrotron for providing access to the XAS beam-line (project ID M9991) and beam-line scientists Dr. Bernt Johannessen, Dr. Peter Kappen and Dr. Chris Glover for support in experiments. Funding of this work by the Australian Research Council (CE140100012 to LS) and National Science Foundation (EAR1231322 to WHC and CHE1410688 to BMT) is gratefully appreciated. 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",

pages = "13482--11349",

journal = "Chemistry - A European Journal",

issn = "0947-6539",

publisher = "Wiley-VCH Verlag",

number = "54",

}

TY - JOUR

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

N1 - Funding Information: The authors thank the Monash Centre for Electron Microscopy for providing access to the facilities, the Australian Synchrotron for providing access to the XAS beam-line (project ID M9991) and beam-line scientists Dr. Bernt Johannessen, Dr. Peter Kappen and Dr. Chris Glover for support in experiments. Funding of this work by the Australian Research Council (CE140100012 to LS) and National Science Foundation (EAR1231322 to WHC and CHE1410688 to BMT) is gratefully appreciated. Publisher Copyright: © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

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

UR - http://www.scopus.com/inward/record.url?scp=85028416046&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85028416046&partnerID=8YFLogxK

U2 - 10.1002/chem.201702579

DO - 10.1002/chem.201702579

M3 - Article

AN - SCOPUS:85028416046

SN - 0947-6539

VL - 23

SP - 13482

EP - 11349

JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

IS - 54

ER -

Tunable Biogenic Manganese Oxides

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this