Synthesis of Sulfides Nanomaterials at Aqueous-Organic Interfaces

CdS, CuS and MoS2 semiconductors were successfully synthesized at the aqueous-organic interfaces via the chemical synthesis method. The Cd2+, Cu2+, and ions were extracted into organic phase by the extractant di- (2,4,4-trimethylpentyl) monothiophosphinic acid firstly, then the obtained Cyanex 302-Cd2+ (Cu2+ or ) complexes in organic phase reacted with S2− in the aqueous phase at the aqueous-organic interfaces to synthesize sulfide nanomaterials, respectively. The obtained nanomaterials were characterized by x-ray powder diffraction, transmission electron microscopy and electron diffraction, respectively. It could be seen that the extractant played several functions in the whole procedure: the phase transferring agent, the morphology controlling agent and surface-modifying agent.