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• W2316634527 endingPage "2061" @default.
• W2316634527 startingPage "2052" @default.
• W2316634527 abstract "In this work, transition metal oxide clusters (MnOx, FeOx, CoOx, NiOx, and CuOx, denoted as TM-TiO2) are in situ loaded on TiO2 nanosheets through one-pot reaction. Structural and pore structural characterizations prove that metal ions do not dope into the frameworks of TiO2 nanosheets. Through TEM and STEM, we can determine that clusters with ∼2 nm size are finely dispersed on TiO2 nanosheets. PL spectra and photoelectrochemical measurements suggest that these metal oxide clusters can serve as hole traps. Time-resolved PL spectra demonstrate that the charge-transfer process in TM-TiO2 is significantly accelerated, leading to higher charge separation efficiency. Metal oxide clusters show significant promotion effect in photocatalytic water oxidation to O2 compared to RuO2/TiO2 and IrO2/TiO2 nanosheets (denoted as Ru-TiO2(IM) and Ir-TiO2(IM)) prepared through conventional impregnation method. We also prepared RuO2/TiO2 and Ir/TiO2 nanosheets (denoted as Ru-TiO2(HT) and Ir-TiO2(HT)) through the in situ loading method. Ru-TiO2(HT) and Ir-TiO2(HT) show O2 evolution rates much better than those of Ru-TiO2(IM) and Ir-TiO2(IM) due to the smaller sizes of RuO2 and IrO2. However, Mn-TiO2 and Co-TiO2 still display better photoactivities compared to those of Ru-TiO2(HT) and Ir-TiO2(HT). These results indicate that transition metal oxides with small sizes can also work as co-catalysts in photocatalysis to substitute noble metal oxides." @default.
• W2316634527 created "2016-06-24" @default.
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• W2316634527 date "2013-08-12" @default.
• W2316634527 modified "2023-10-16" @default.
• W2316634527 title "<i>In Situ</i> Loading Transition Metal Oxide Clusters on TiO₂ Nanosheets As Co-catalysts for Exceptional High Photoactivity" @default.
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• W2316634527 doi "https://doi.org/10.1021/cs4002755" @default.
• W2316634527 hasPublicationYear "2013" @default.
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