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Updated: Jul 26, 2026

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
Published on: August 7, 2018
Polymer-Assisted Direct and Rapid Microwave Synthesis of Mesoporous Binary and Ternary Metal Oxides for
Jasmin Helgert1, Jana Timm1, Lion Schumacher1
1Physical Chemistry III, University of Bayreuth, 95447, Bayreuth, Germany.
Abstract:
A novel quick and facile polymer-assisted microwave synthesis route to prepare mesoporous binary metal oxides α-Fe2O3 and α-Mn2O3 and spinel-type ferrites NiFe2O4 and ZnFe2O4 is presented, which can potentially be applied for many other mixed metal oxides. The presented synthesis only needs 15-30 min, much shorter than conventional approaches for mesoporous materials. Thorough characterization of the materials is performed by Powder X-Ray Diffraction (PXRD), Raman spectroscopy, energy dispersive X-ray spectroscopy (EDXS), nitrogen physisorption analysis, mercury intrusion porosimetry (MIP), diffuse reflectance infrared fourier transform (DRIFT) spectroscopy, UV-Vis-spectroscopy, X-Ray photoelectron spectroscopy (XPS), and scanning (SEM) as well as transmission electron microscopy (TEM) and selected area electron diffraction (SAED). Furthermore, mesoporous α-Mn2O3 and NiFe2O4 are applied as electrocatalysts for electrocatalytic oxygen evolution in alkaline media, showing improved performance compared to nanoparticles or EISA-derived mesoporous NiFe2O4.
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