Formation of Hierarchical CuO Nanostructures on Copper Foil by Chemical Bath Deposition for Applications in Superhydrophobic Surfaces

Abstract

Abstract. Hierarchical CuO nanostructures (urchin-like and grassy island structure) were successfully synthesized by a simple chemical bath deposition method at low temperature of 70°C in a short reaction time of 1h. XRD analysis revealed the presence of pure crystalline monoclinic CuO. Morphological analysis revealed the formation of spherical structures composed of numerous hair-like structures. The pH of the solution was also investigated to have a great effect on the morphology of the CuO nanostructures. At lower pH, the structures tend to form urchin-like structures; while at higher pH, the structures tend to form grass-like islands. A growth mechanism was also proposed in this paper. Lastly, wettability test proved the stable superhydrophobic property of the CuO nanostructured thin film surface.

Electrochemical Investigation of Cupric Oxide Grown on Copper Foil via Chemical Bath Deposition

“…Chemical bath deposition of Cu foil in Cu(NO 3 ) 2 •2.5H 2 O/NH 3 solution produced a black product on the surface of the foil. The high alkalinity favors the oxidation of the Cu foil [1]. Fig.…”

“…Improvement of specific capacitance highly depends on the structure and size of the electrode materials used. Copper (Cu) nanomaterials exhibit a wide variety of morphology and properties which can be useful for numerous applications [1]. They are also low in cost and environmentally friendly in nature.…”

“…They are also low in cost and environmentally friendly in nature. Cupric oxide (CuO) is a p-type transitional metal oxide semiconductor with a narrow bandgap of 1.22.1 eV, is naturally black in color, and observes a monoclinic crystal structure [1].…”

“…Chemical bath deposition (CBD) on Cu foil allows direct formation onto a conductive substrate, which is ideal for use in energy storage devices such as lithium ion batteries and supercapacitors [1]. The active materials directly grown on conductive substrate is more beneficial to improve supercapacitor performance.…”

“…In this study, CuO were grown on Cu foil via a facile, low-temperature CBD under alkaline conditions. CBD on Cu foil allows direct formation onto a conductive substrate, which is ideal for use in energy storage devices such as lithium ion batteries and supercapacitors [1]. The influence of pH on the morphology, and crystal structure of the resulting Cu compounds were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD).…”