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  • Title: Fabrication and SERS properties of Ag/Cu2S composite micro-nanostructures over Cu foil.
    Author: Song W, Wang J, Mao Z, Xu W, Zhao B.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2011 Sep; 79(5):1247-50. PubMed ID: 21571583.
    Abstract:
    A new kind of Ag/Cu2S composite micro/nanostructures has been prepared via a convenient galvanic reduction method. SEM images of these micro/nanostructures showed that Ag nanoparticles with the size of around 50-100 nm were well deposited on the surface of Cu2S micro/nanostructures. The SEM images also indicated that the Ag nanoparticles were preferentially grown on the big polygonal Cu2S microstructures, which could be explained by a localization of the electrons on the surface of the polygonal Cu2S microstructures after the electron transfer step. Owing to the introduction of Ag nanoparticles on the surface of Cu2S micro/nanostructures, the resulting Ag/Cu2S composite micro-nanostructures could be used as a versatile substrate for surface enhanced Raman scattering.
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