Cross-sectional characterization of cupric oxide nanowires grown by thermal oxidation of copper foils

• DOI: 10.1016/j.apsusc.2010.06.034
• Publication Date: 2010-06-21T04:21:14Z
• Authors: JianBo Liang; Naoki Kishi; Tetsuo Soga; Takashi Jimbo
• Keywords: Thermal oxidation; Energy-dispersive X-ray spectroscopy; Copper oxide; Field emission microscopy

CuO nanowires have been synthesized by heating a Cu foil in an ambient condition. The diameters of nanowires can be controlled by changing the annealing temperature. The morphology, composition, and structure were analyzed by using X-ray diffraction (XRD) and scanning electron microscope (SEM). To investigate the detailed layering structure of the substrates after oxidation, the cross-sectional analysis was also performed by using field emission-SEM and energy dispersive X-ray spectroscopy (EDX). The EDX measurements indicated that the CuO nanowires were grown on the CuO/Cu2O layer, which was formed on the surface of Cu foil.