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- W2340781391 abstract "We report a simple and environmentally friendly approach to the synthesis of Au-SiO 2 composite nanospheres. Our method presents a route for the decoration of preformed amine functionalized SiO 2 nanospheres by in situ formation of Au nanoparticles at three different concentrations of Au precursor (HAuCl 4 ). Herein, the silane coupling agent (KH-550) is used as an intermediary to connect the Au nanoparticles to the surfaces of the SiO 2 nanospheres, which helps avoid the aggregation of Au nanoparticles. The crystal structure, chemical elements, morphology and catalytic properties of the Au-SiO 2 composite nanospheres were analyzed by transmission electron microscopy (TEM), X-Ray powder diffraction (XRD), UV-vis-spectrophotometer (UV-vis) and X-ray photoelectron spectroscopy (XPS). The analytical results demonstrate that the Au nanoparticles (4–9 nm) were homogeneously distributed on the surface of the SiO 2 nanospheres, which had a good FCC crystal structure. Moreover, the Au-SiO 2 composite nanospheres exhibited good catalytic properties, measured by their ability to reduce organic dyes. The Au-SiO 2 composite nanospheres are promising candidates for applications in catalysis and wastewater treatment." @default.
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- W2340781391 date "2016-04-01" @default.
- W2340781391 modified "2023-09-26" @default.
- W2340781391 title "Synthesis of Au-SiO2 Composite Nanospheres and Their Catalytic Activity" @default.
- W2340781391 doi "https://doi.org/10.1166/jnn.2016.11883" @default.
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