Water oxidation catalysis by using nano-manganese ferrite supported 1D-(tunnelled), 2D-(layered) and 3D-(spinel) manganese oxides
JOURNAL OF MATERIALS CHEMISTRY A, vol.4, no.22, pp.8812-8821, 2016 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 4 Issue: 22
- Publication Date: 2016
- Doi Number: 10.1039/c6ta00593d
- Journal Name: JOURNAL OF MATERIALS CHEMISTRY A
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.8812-8821
- Hacettepe University Affiliated: Yes
Abstract
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.