| Summary: | 碩士 === 中原大學 === 化學工程研究所 === 96 === A number of different ways have been developed to prepare metal
nano-particles. Some of these methods include photoreduction and
reduction using various reducing agents in association with protective
polymers or surfactants. However, it has been argued that the stabilizer or
protective polymer used for stabilization of metal nanoparticles covers its
surface and hence can reduce the catalytic properties of the metal
particles.
In this paper, we report a novel solution phase reduction method for
preparing copper nanoparticles, which does not require steric stabilizing
agents. Copper metal nanoparticles was formed with a novel reducing
agent, and were characterized using x-ray powder diffraction, scanning
electron microscopy, transmission electron microscopy, XPS and EDS
analyses. The average diameter of copper nanoparticles was measured to
be < 20 nm. The crystal structure of copper nanoparticles was determined
to be a face centered cubic single crystal structure, which is the same as
the bulk copper.
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