Water oxidation catalysis by using nano-manganese ferrite supported 1D-(tunnelled), 2D-(layered) and 3D-(spinel) manganese oxides. Issue 22 (20th May 2016)

• Record Type: Journal Article
• Authors: Elmacı, Gökhan; Frey, Carolin E.; Kurz, Philipp; Zümreoğlu-Karan, Birgül
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 22(2016)
• Page Start: 8812
• Page End: 8821
• Publication Date: 2016-05-20
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6ta00593d
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A first comparative study on 1D-, 2D- and 3D-manganese oxides supported by iron oxide nanoparticles for use as water oxidation catalysts is presented. 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-MnO x structures carried out the chemical water oxidation reaction with Ce 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 O2 [3900 mmol (O2 ) 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.