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- W2215432009 abstract "Very small platinum nanoclusters have been synthesized by reduction of H2PtCl6·6H2O salt with NaBH4 in the presence and absence of water-soluble l-cysteine ligand. The synthesized platinum clusters were supported over anatase titanium dioxide (TiO2) by 1% wt/wt. The spectroscopic properties of Ptn(l-Cys)m clusters were studied by UV–vis spectroscopy and Fourier transform infrared spectroscopy (FTIR) and its chemical structure were determined by thermogravimetric analysis (TGA) and elemental analysis. The particle sizes of supported and non-supported platinum clusters were characterized by transmission electron microscopy (TEM) and powder X-ray diffraction analysis. As well as their specific surface areas were determined using nitrogen adsorption/desorption measurements, pore volume and average pore diameter were also calculated. Finally, oxidation of styrene is used as a simple model reaction to demonstrate that these systems exhibit the potential to be used as heterogeneous catalysts. The doped monodisperse platinum clusters (1% Ptn(l-Cys)m/TiO2) catalyst exhibited the highest catalytic activity and selectivity (100% benzaldehyde) in oxidation of styrene. The non-doped platinum clusters (Ptn(l-Cys)m) showed more catalytic activity than doped polydisperse platinum clusters (1% Pt/TiO2). Hydrogen peroxide was used as oxidizing agent, which exhibited stronger oxidation potential than oxygen gas. The unique atom-packing structure and electronic properties of Ptn(l-Cys)m nanoclusters (∼1 nm) are rationalized to be responsible for their extraordinary catalytic activity observed in oxidation of styrene." @default.
- W2215432009 created "2016-06-24" @default.
- W2215432009 creator A5089553106 @default.
- W2215432009 date "2016-03-01" @default.
- W2215432009 modified "2023-09-24" @default.
- W2215432009 title "Monodisperse and polydisperse platinum nanoclusters supported over TiO2 anatase as catalysts for catalytic oxidation of styrene" @default.
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- W2215432009 doi "https://doi.org/10.1016/j.molcata.2015.12.011" @default.
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