Hydrogen peroxide-assisted hydrothermal synthesis of hierarchical CuO flower-like nanostructures

Abstract

Hierarchical CuO nanostructures were synthesized through a hydrogen peroxide-assisted hydrothermal route in which Cu(OH) 2 was the copper source. The CuO nanostructures were composed of numerous nanobelts that radiated from the center of the nanostructure and formed a flower-like shape with a diameter of 5–10 μm. The nanobelts had lengths of 2.5–5 μm and widths of 150–200 nm. The H 2O 2 concentration directly influenced the product morphology. As the concentration of H 2O 2 increased, the length and width of the nanobelts increased and the quantity of the nanobelts decreased. The possible formation mechanism of hierarchical CuO flower-like nanostructures was presented.