Impact of precursor type on physical, morphological, microstructural, and optical properties of CdZnS nanoparticles for photodegradation applications

In current work, Cadmium Zinc Sulfide (CdZnS) nanoparticles (NPs) prepared by chemical co-precipitation technique without using any capping agents. Effect of Zinc source on surface morphology, elemental analysis, and optical properties of CdZnS are discussed in this work. these properties of prepared materials were investigated using a variety of techniques, including X-ray diffraction (XRD), scanning electron microscopy, energy dispersive X-ray, and ultraviolet–visible absorption. Distinct peaks at 31, 34, 43, and 62, which matched CdS, could be seen in the XRD patterns of the CdZnS nanoparticles. The crystalline phase of CdZnS nanoparticles was attributed to the remaining peaks at 34, 36, 47, and 68. The reactants' physicochemical interactions were revealed by FTIR spectroscopy. The spectrum had apparent ethanol-related peaks, with a clear Zn–S interaction peak at 635–634 cm −1 . The CdZnS nanoparticles contained sulphur, zinc, and cadmium, according to EDS analysis. In the Zn1 and Zn2 samples, the stoichiometry ratios were found to be 53% Cd, 41% Zn, and 5% S and 82% Cd, 17% Zn, and 1% S, respectively. The CdZnS nanoparticles were spherical in shape and ranged in size from 40 to 50 nm, according to an SEM analysis. The CdZnS nanoparticles' absorption peaks, (Zn1) at 370 nm and (Zn2) at 390 nm, were visible in UV-–Vis. spectra. Quantum size effects on band gap absorption energy were found to have an impact on the optical bandgap energy, which was found to be 3.35 eV (Zn1) and 3.13 eV (Zn2). Overall, the study successfully characterized the structural, morphological, and optical properties of CdZnS nanoparticles and provided valuable insights into their potential applications in various fields. According to the results the prepared nanoparticles are suitable for photodegradation applications.