| dc.description.abstract | In this thesis is to study the various morphologies of copper nanocrystals. Hydrothermal method and solvothermal reduction method are used to synthesize various copper nanocrystals. Optimum synthesis reaction conditions, by scanning electron microscope (SEM) to observe and analyze the surface morphology of copper nano-synthesis, it was found that the synthesis of products with different shapes, copper nanoparticles were detected copper nanoparticle, copper nanocube, copper nanotetrahedron, copper pyramid, copper nanorod, copper nanowire, and then analyze the components of the prepared copper nanocrystals with different shapes by Energy-dispersive X-ray spectroscopy (EDS), and use the mapping function of EDS to understand the product. The composition distribution shows that these copper nanocrystals are free from oxidation and chlorination and are pure copper nanocrystal structures. The image J software was used to analyze the number percentage (%) and size distribution of each copper nanocrystal morphology.
Under the reaction conditions for synthesizing copper nanoparticles, one can produce different amounts and sizes of copper under fixed concentration of capping agent and different reaction time; Under fixed conditions, different amounts and sizes of copper topography can be produced. In this study, various morphologies of copper nanocrystals were successfully synthesized by hydrothermal method and solvothermal reduction method. From the variety of copper nanocrystal morphology, quantity percentage and size, it can be guided and proposed that copper atoms in liquid The optimum synthetic reaction conditions for the process of grain growth and evolution during the phase reduction process will provide the basis for future basic research on copper nanowires and the application of copper nanomaterials in the electronics industry.
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