Abstract
Nano-scale copper oxide with various morphologies is synthesized via the thermal oxide method and growth in a 5 wt% NaCl solution of spray fog environment. The nano-scale copper oxide is grown on copper metal sheets via the thermal oxide method at 650℃ for 60 minutes. Nano-scale copper oxide grains and nanowires are induced on copper metal sheets then placed in 5 wt% NaCl solution of salt spray fog environment. Significant changes in particle size and mor-phology are observed with increasing salt spray fog treatement time. The morphology of nano-scale copper oxide varies from nanograins to nanowires, Ctahedron, and icositetrahedron. The morphologies and structures of the obtained nano-scale copper oxide are investigated by scanning electron microscopy and energy-dispersive spectroscopy. Possible growth mechanisms are discussed.
Highlights
Nanoscale one-dimensional (1D) and two-dimensional (2D) materials such as nanowires, nanorods, nanoribbons, and nanosheets have attracted a lot of interest due to their unique physical properties and potential applications in nanodevices.Copper oxide (CuO) is a well known p-type semiconductor and a photovoltaic material
Nano-scale copper oxide with various morphologies is synthesized via the thermal oxide method and growth in a 5 wt% NaCl solution of spray fog environment
Nano-scale copper oxide grains and nanowires are induced on copper metal sheets placed in 5 wt% NaCl solution of salt spray fog environment
Summary
Nanoscale one-dimensional (1D) and two-dimensional (2D) materials such as nanowires, nanorods, nanoribbons, and nanosheets have attracted a lot of interest due to their unique physical properties and potential applications in nanodevices. A number of methods have been used to synthesize and control the size and morphology of nano-scale CuO, such as thermal evaporation [1], solution synthesis [7], thermal oxidation [8], sol-gel [9], hydrothermal method [10], electrospinning [11] and microwave hydrothermal synthesis [12]. These methods have been used to synthesize CuO nanomaterials with various morphologies, such as nanoparticles, 1D nanowires, nanorods, and nanobelts; 2D nanosheets, nanoleaves, and nanowiskers; and three-dimensional peachstone-like, boat-like, and ellipsoid-like nanostructures [10].
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