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Updated: Feb 21, 2026

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
Published on: August 7, 2018
From molecular to colloidal manganese vanadium oxides for water oxidation catalysis
Benjamin Schwarz1, Johannes Forster, Montaha H Anjass
1Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany. carsten.streb@uni-ulm.de.
Abstract:
The spontaneous, sonication-driven conversion of a molecular manganese vanadium oxide water oxidation catalyst, (n-Bu4N)3[Mn4V4O17(OAc)3] × 3H2O, into colloidal manganese vanadium oxide particles (average particle size ca. 70 nm) together with their stability and chemical water oxidation activity is reported. The nanoparticulate metal oxide colloid (approximate composition: VMn5O10·ca. 6H2O·ca. 0.2nBu4N+) is formed spontaneously when the molecular precursor is sonicated in water. The particles show water oxidation activity when combined with CeIV as the oxidant, are stable even under highly acidic reaction conditions and can be recovered and reused.
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