Synthesis and characterization of CdSe nanostructures by using a new selenium source: Effect of hydrothermal preparation conditions

• A facile hydrothermal method was successfully employed to prepare CdSe.
• The effects of some parameters were investigated.
• PEG600, PVA, SDBS, CTAB and PEG4000 were used as surfactant.
• N2H4·H2O, KBH4 and Zn were used as reductant.

In this paper, we report a convenient and controllable synthetic method based on a reaction in an aqueous system, which can produce CdSe nanostructures of different sizes and shapes at 180 °C for 12 h. SeCl4 and 3CdSO4·8H2O are used as reactants in this hydrothermal method. By using appropriate surfactants and reductants as controlling reagents and also adjusting molar ratio of Cd/Se and amount of reductant, the morphology, particle size and structural phase of products can be easily controlled. Because of high yield, simple reaction apparatus, and low reaction temperature, this method will have a good prospect in future large-scale application and surely can be used to synthesize other metal selenide nanostructures.

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