A novel approach for preparing silver nanoparticles under electron beam irradiation |
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Authors: | Kai Li and Fu-Shen Zhang |
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Institution: | (1) Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People’s Republic of China; |
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Abstract: | Silver (Ag) nanoparticles were obtained when Ag microparticles were exposed to an electron beam in a transmission electron
microscope (TEM). Results from TEM characterization indicated that the morphologies of the prepared Ag nanoparticles were
quasi-circular, and the sizes were mainly in the range of 5–60 nm. The effect of irradiation time (t) on size and distribution of Ag nanoparticles was investigated. It was found that the sizes of Ag nanoparticles increased
with the increase of t. The bigger Ag nanoparticles were near the Ag microparticle and the smaller ones were far from it. In addition, these Ag
nanoparticles were monodisperse. This approach offered a new route for preparing Ag nanoparticles under electron beam irradiation,
and the forming process of Ag nanoparticles was explained by the nucleation-growth mechanism. |
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Keywords: | |
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