摘要
Hierarchical 3D flower-like CuO nanostructures on the Cu substrates were synthesized by a wet chem- ical method and subsequent heat treatment. The synthesis, structure and morphologies of obtained samples under different concentrations of NazS203 were investigated in detail and the possible growth mechanisms of the 3D flower-like CuO nanostructures were discussed. Na2S203 plays a key role in the generation of the 3D flower-like CuO nanostructures. When the concentration of Na2S203 is more than 0.4 mol/L, the 3D flower-like CuO nano- structures can be prepared on the Cu foils. The photocatalytic performances were studied by analyzing the degra- dation of methyl orange （MO） in aqueous solution in the presence of hydroxide water （H202）. The 3D flower-like CuO nanostructures exhibit higher photocatalytic activity （96.2% degradation rate） than commercial CuO particles （36.3% degradation rate）. The origin of the higher photocatalytic activity of the 3D flower-like CuO nanostructures was also discussed.
Hierarchical 3D flower-like CuO nanostructures on the Cu substrates were synthesized by a wet chem- ical method and subsequent heat treatment. The synthesis, structure and morphologies of obtained samples under different concentrations of NazS203 were investigated in detail and the possible growth mechanisms of the 3D flower-like CuO nanostructures were discussed. Na2S203 plays a key role in the generation of the 3D flower-like CuO nanostructures. When the concentration of Na2S203 is more than 0.4 mol/L, the 3D flower-like CuO nano- structures can be prepared on the Cu foils. The photocatalytic performances were studied by analyzing the degra- dation of methyl orange （MO） in aqueous solution in the presence of hydroxide water （H202）. The 3D flower-like CuO nanostructures exhibit higher photocatalytic activity （96.2% degradation rate） than commercial CuO particles （36.3% degradation rate）. The origin of the higher photocatalytic activity of the 3D flower-like CuO nanostructures was also discussed.
基金
supported by the High-Tech Research and Development Program of China(No.2009AA03Z427)
