- Synthesis and Catalytic Characteristics of Thermally Stable TiO2/Pt/SiO2 Hybrid Nanocatalysts
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A. Satyanarayana Reddy, Chan-Ho Jung, Sun-Mi Kim, Jung-Yeul Yun, Jeong-Young Park
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J Korean Powder Metall Inst. 2011;18(6):532-537.
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DOI: https://doi.org/10.4150/KPMI.2011.18.6.532
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 Abstract
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- Thermally stable TiO_2/Pt/SiO_2 core-shell nanocatalyst has been synthesized by chemical processes. Citrated capped Pt nanoparticles were deposited on amine functionalized silica produced by Stober process. Ultrathin layer of titania was coated on Pt/SiO_2 for preventing sintering of the metal nanoparticles at high temperatures. Thermal stability of the metal-oxide hybrid catalyst was demonstrated heating the sample up to 600°C in air and by investigating the morphology and integrity of the structure by transmission electron spectroscopy. The surface analysis of the constituent elements was performed by X-ray photoemission spectroscopy. The catalytic activity of the hybrid catalysts was investigated by CO oxidation reaction with oxygen as a model reaction.
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