We report the growth of CuO nanowires from copper foils oxidized in air at temperatures between 400 and 800  ∘C
Nanostructure materials have many special physical and chemical properties compared to traditional micron scale materials. For instance, nanomaterials with quantum confined effect have unique electrical, optical, magnetic and thermal properties (Manmeet et al. 2006). Potential applications of nanomaterials have attracted extensive concern of scientific research. In recent years, human beings are extremely interested in one dimensional nanostructure materials such as nanowires, nanotubes and nanorods owing to their potential applications in fabrication of nanodevices (Xia et al. 2003; Liu et al. 2014a, b; Miao et al. 2014). Cupric oxide (CuO) is a p-type semiconductor with a narrow band gap of about 1.2 eV (Rakhshani 1986) and is expected to be used as high temperature superconductors (MacDonald 2001), giant magnetoresistance materials (Zheng et al. 2000), promising solar cells materials (Maruyama 1998), lithium ion battery material (Gao et al. 2004), gas sensor (Liao et al. 2009) and electron field emission source (Zhu et al. 2005).
