Journal
RADIATION PHYSICS AND CHEMISTRY
Volume 77, Issue 2, Pages 169-173Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2007.05.007
Keywords
Cu nanoparticles; electron beam irradiation; surfactant; size distribution
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Electron beam irradiation method was successfully applied to the preparation of Cu nanoparticles in aqueous solution under room temperature and ambient pressure using polyvinyl alcohol (PVA) as the surfactant. The influences of the pH on the products were studied by X-ray diffraction (XRD), and those of the surfactant PVA concentration on the particle size and agglomeration by ultraviolet-visible spectrophotometry (UV-vis) and laser scattering particle size distribution analysis (LSPSDA). The products were characterized by XRD and transmission electron microscopy (TEM). The results showed that the grain size of Cu nanoparticles, within a certain range, can decrease with increasing PVA concentration. Pure Cu nanoparticles with the grain size distribution of 5-50 urn were prepared when the pH was adjusted between 5.0 and 9.0, and the PVA concentration was 2.20g/100 mL. (c) 2007 Elsevier Ltd. All rights reserved.
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