Synthesis and Photocatalytic Performance of Dendritic CdS Nanostructures by an Ionic Liquid-assisted Hydrothermal Route

Dendritic cadmium sulfide were synthesized in aqueous solution of Ethylenediamine fluoboratebased ionic liquid([H2NCH2CH2NH3]BF4)with cadmium chloride and thiourea as raw materials.The obtained products were characterized by X-ray diffraction,scanning electron microscopy,fluorescence spectroscopy.Optical properties of dendrites CdS and photocatalytic degradation of methyl orange were tested.The results show that the ionic liquid and reaction time play an important role in the formation of dendritic structures of cadmium sulfide.A possible growth mechanism on the formation of dendritic CdS was proposed.The experiment results of photocatalysis indicate that the as-prepared CdS nanostructures have high photocatalytic degradation rate for methyl orange under UV,and the photocatalytic degradation rate of methyl orange is up to 85%after 280min degradation.