Synthesis of aligned copper oxide nanorod arrays by a seed mediated hydrothermal method

The synthesis of ordered copper oxide (CuO) nanorod arrays has been obtained using a seed-mediated hydrothermal method. Aligned CuO nanorods were obtained on fluorine doped tin oxide glass substrates over a large scale at low temperature ranging from 75 to 85 °C. It is found the CuO nanoseeds play an important role to facilitate the growth of those aligned CuO nanorods. The band gap energy of the CuO nanorods was estimated by ultraviolet–visible absorption spectroscopy. The growth mechanism of this method was also investigated.