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Copper-based nanoparticles prepared from copper (II) acetate bipyridine complex

Lastovina Tatiana A. (Southern Federal University, International Research Center "Smart materials", Rostov-on-Don, Russia)
Budnyk Andriy P. (Southern Federal University, International Research Center "Smart materials", Rostov-on-Don, Russia)
Khaishbashev Gevorg A. (Southern Federal University, International Research Center "Smart materials", Rostov-on-Don, Russia)
Kudryavtsev Egor A. (Belgorod National Research University, Joint Research Center „Diagnostics of structure and properties of nanomaterials“, Belgorod, Russia)
Soldatov Alexander V. (Southern Federal University, International Research Center "Smart materials", Rostov-on-Don, Russia)

We report the synthesis of CuO, Cu/Cu2O and Cu2O/CuO nanoparticles (NPs) from the single copper (II) acetate bipyridine complex by three different methods:microwave-assisted, solvothermal and borohydride. Presence of bipyridine ligand in the copper complex would impose no need in additional stabilization during synthesis. The phases of formed NPs were identified by X-ray diffraction. CuO NPs of ~11 nm were obtained via solvothermal synthesis from alkaline solution at 160°C. The Cu/Cu2O NPs of ~80 nm were produced via microwave-assisted polyol procedure at 185-200°C, where ethylene glycol can play a triple role as a solvent, a reducing agent and a surfactant. The Cu2O/CuO NPs of ~16 nm were synthesized by a borohydride method at room temperature. Interplanar spacing calculated from the selected-area electron diffraction data confirmed the formation of Cu, CuO and Cu2O phases in respective samples. All NPs are stable and can be used for various applications including biomedicine.

Keywords: Copper (II) acetate complex, copper and copper oxides nano-particles, solvothermal and microwave-assisted polyol synthesis, borohydride method