Abstract
Nanocrystal superlattices (NCSs) comprised of self-assembled copper nanodisks were successfully synthesized in quaternary W/O microemulsions containing Span 80–Tween 80, liquid paraffin and n-butanol. Morphologies, structure and thermal properties of the Cu nanocrystals were characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectra, thermogravimetry (TG) and differential thermogravimetry (DTG). The reaction conditions which effect the growth of the Cu nanodisks were explored, and a mechanism for the formation of the Cu NCSs is proposed. XRD and TEM studies show that the as-synthesized Cu nanodisks exhibit a cubic crystal structure, and FT-IR and TG analysis show that the surfaces of the Cu nanodisks are covered with surfactants, which assist in the formation of the superlattice and prevent the oxidation of the Cu nanocrystals. Variation of the reaction parameters such as mass ratio of the surfactants and the presence of oleic acid is found to have a significant effect on the formation of the Cu nanodisks.
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Sun, L., Zhao, Y., Guo, W. et al. Microemulsion-based synthesis of copper nanodisk superlattices. Appl. Phys. A 103, 983–988 (2011). https://doi.org/10.1007/s00339-011-6368-2
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DOI: https://doi.org/10.1007/s00339-011-6368-2