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Journal of Industrial and Engineering Chemistry, Vol.13, No.2, 319-324, March, 2007
Preparation of Platinum and Palladium Nanotubes Using MPTMS-Functionalized Silica Spheroids as Templates
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Platinum and palladium nanotubes were prepared by the adsorption of metal nanoparticles onto functionalized silica templates. The silanizing agent 3-mercaptopropyl trimethoxysilane was reacted with the surface of the silica templates to present thiol-terminal groups. Dissolution of the silica template using 10 M HF solution enabled the formation of self-organized metallic platinum and palladium nanotubes. When the temperature of the metal reduction process was increased from 4 to 80 ℃, this method was more effective than the metal reduction conducted at room temperature. The platinum and palladium nanotubes were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS).
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