从分子态到胶态的锰钒氧化物用于水氧化催化
From molecular to colloidal manganese vanadium oxides for water oxidation catalysis.
作者信息
Schwarz Benjamin, Forster Johannes, Anjass Montaha H, Daboss Sven, Kranz Christine, Streb Carsten
机构信息
Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
出版信息
Chem Commun (Camb). 2017 Oct 19;53(84):11576-11579. doi: 10.1039/c7cc06840a.
The spontaneous, sonication-driven conversion of a molecular manganese vanadium oxide water oxidation catalyst, (n-BuN)[MnVO(OAc)] × 3HO, 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: VMnO·ca. 6HO·ca. 0.2nBuN) is formed spontaneously when the molecular precursor is sonicated in water. The particles show water oxidation activity when combined with Ce as the oxidant, are stable even under highly acidic reaction conditions and can be recovered and reused.
报道了一种分子态锰钒氧化物水氧化催化剂(n-BuN)[MnVO(OAc)]×3HO在超声作用下自发转化为胶体状锰钒氧化物颗粒（平均粒径约70 nm）的过程，以及这些颗粒的稳定性和化学水氧化活性。当分子前驱体在水中超声处理时，会自发形成纳米颗粒状金属氧化物胶体（近似组成：VMnO·约6HO·约0.2nBuN）。这些颗粒与Ce作为氧化剂结合时表现出水氧化活性，即使在高酸性反应条件下也很稳定，并且可以回收再利用。
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