Water oxidation catalysis by using nano-manganese ferrite supported 1D-(tunnelled), 2D-(layered) and 3D-(spinel) manganese oxides

We report a new series of core-shell composite catalysts obtained by supporting 1D-(tunnelled), 2D-(layered) and 3D-(spinel) manganese oxides on nano-manganese ferrite. All other factors being equal, magnetic 2D-MnO sub(x) structures carried out the chemical water oxidation reaction with Ce super(4+...

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Published inJournal of materials chemistry. A, Materials for energy and sustainability Vol. 4; no. 22; pp. 8812 - 8821
Main Authors Elmaci, Gokhan, Frey, Carolin E, Kurz, Philipp, Zuemreoglu-Karan, Birguel
Format Journal Article
LanguageEnglish
Published 2016
Subjects
Catalysis
Catalysts
Ferrite
Manganese
Manganese oxides
Nanostructure
Oxidation
Surface area
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Summary:We report a new series of core-shell composite catalysts obtained by supporting 1D-(tunnelled), 2D-(layered) and 3D-(spinel) manganese oxides on nano-manganese ferrite. All other factors being equal, magnetic 2D-MnO sub(x) structures carried out the chemical water oxidation reaction with Ce super(4+) at a higher efficiency than their 1D-, 3D- and non-magnetic counterparts. Ca-birnessite, when supported on a ferrite core, produced the highest amount of O sub(2) [3900 mmol (O sub(2)) per mol (Mn) per h] normalized per mol of manganese in the catalysts. The composition and morphology parameters of the magnetic core-shell structures appeared to be important in determining the observed activity while no direct correlation was noted with the surface area.
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ISSN:2050-7488
2050-7496
DOI:10.1039/c6ta00593d