期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 4, 期 22, 页码 8812-8821出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta00593d
关键词
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资金
- Scientific and Technological Research Council of Turkey [113Z900]
- EU Erasmus + Programme
- German Federal Ministry of Education and Research (BMBF)
- German Science Foundation (DFG) [KU2885/2-2, SPP1613 27 SolarH2]
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-MnOx structures carried out the chemical water oxidation reaction with Ce4+ 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-2 [3900 mmol (O-2) per mot (Mn) per hl normalized per mot 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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