Novel copper sulfide (CuS) hollow spheres composed of nanoflakes were synthesized under hydrothermal conditions by treating copper (II)-thiourea complex from CuSO4 · 5H2O and thiourea at 180°C for 24 h. When increasing the reaction temperature, much smaller hexagonal CuS nanoflakes generated from copper (II)-thiourea complex formed and self-assembled into hollow spheres. The products were characterized by means of X-ray powder diffraction scanning electron microscopy and field emission scanning electron microscopy. It is found that the reaction temperature and copper (II)-thiourea complex are of importance to form hollow spherical superstructures. A possible mechanism is also discussed.
Bibliographical noteFunding Information:
The National Natural Science Foundation of P.R. China and the 973 Program are gratefully acknowledged.
- A1. Crystal morphology
- A2. Growth from solutions
- A2. Hydrothermal crystal growth
- B1. Inorganic compounds
- B1. Sulfides
- B3. Solar cells