Publication | Closed Access
From molecular to colloidal manganese vanadium oxides for water oxidation catalysis
19
Citations
32
References
2017
Year
The spontaneous, sonication-driven conversion of a molecular manganese vanadium oxide water oxidation catalyst, (n-Bu<sub>4</sub>N)<sub>3</sub>[Mn<sub>4</sub>V<sub>4</sub>O<sub>17</sub>(OAc)<sub>3</sub>] × 3H<sub>2</sub>O, 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: VMn<sub>5</sub>O<sub>10</sub>·ca. 6H<sub>2</sub>O·ca. 0.2nBu<sub>4</sub>N<sup>+</sup>) is formed spontaneously when the molecular precursor is sonicated in water. The particles show water oxidation activity when combined with Ce<sup>IV</sup> as the oxidant, are stable even under highly acidic reaction conditions and can be recovered and reused.
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