Effect of TGA Concentration on Morphology of Cu<sub>2</sub>S Nanoparticals

Copper chalcogenide nanoparticles (NPs) represent a promising material for solar energy conversion and electrical charge storage. We showed that aqueous synthesis of high quality monodispersed high-chalcocite Cu 2 S NPs is possible. Here, different thioglycolic acid (TGA) concentrations were employed in studies made to investigate the effects of stabilities ratio on particle morphology. It was found that the stabilizes concentration plays a key role in the synthesis of Cu2S NPs, the reaction rate is fast at low concentrations of TGA, and the size range is lager, while flower-like cluster with sizes of 30 nm were formed at high concentrations of TGA. Rapid availability of our results will provide valuable insight into the controlled growth of aqueous dispersions of ternary copper chalcogenide NPs, stimulating further studies of these materials in green energy conversion technologies and drug delivery applications.