Synthesis and catalytic study of CeO2 heterostructures with (Zn0.003-xCdx)S0.003 for the removal of crystal violet dye

In the present work different CeO2 heterostructures are synthesized with (Zn0.003-xCdx)S-0.003 via co-precipitation method by varying the concentration of zinc (Zn) and cadmium (Cd). The synthesized heterostructures were characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), UV-visible spectroscopy, Photoluminescence (PL) and Raman spectroscopy. XRD results confirmed the formation of NPs with average crystallite size of 3-5 nm. TEM micrographs depicted the formation of agglomerated non-symmetrical NPs. EDS spectra gives confirmation for the presence of all the elements in synthesized material. FTIR, PL and Raman spectroscopy confirmed the presence of ZnS and CdS in synthesized heterostructures with CeO2 NPs. The photocatalytic activity has been studied by the UV-visible spectrophotometer. The crystal violet (CV) dye was used to check the photocatalytic activity of the synthesized heterostructures. It has been observed that the heterostructures of CeO2 with (Cd0.0015Zn0.0015)S-0.003 has shown enhanced catalytic activity and large rate constant than all other synthesized samples.

Automated summary

In this study, different CeO2 heterostructures were synthesized using the co-precipitation method and characterized using various methods. The results showed that the CeO2 heterostructure with (Cd0.0015Zn0.0015)S-0.003 exhibited higher catalytic activity and rate constant.