| 초록 |
Uniform cupric oxide nanoparticles have been prepared for the first time via a novel supramolecular complex by a thermal decomposition approach, in which cyclodextrin is selected to encapsulate the precursors of copper acetate. The supramolecular complex was characterized by IR spectroscopy, thermogravimetric analysis, differential scanning calorimetry, X-ray powder diffraction, and calorimetric titration studies. The studies show that the complex is of the 2:1 type, in which the compounds interact weakly with each other. The morphology and microstructure of the CuO nanoparticles prepared from copper acetate with and without cyclodextrin were further investigated with transmission electron microscopy. These images reveal that the CuO nanoparticles synthesized by the present technique are uniform in shape, size, and dimension. The average size is in the range of 10-20 nm, which is much smaller than those obtained from the blank experiment. The complexes prepared in this work may be of interest for applications in catalysis, since a high specific surface areas and high catalytic activity of the nanocrystalline metal oxides can be expected. |
