Enhanced photocatalytic degradation of Acid Blue dye using CdS/TiO(2) nanocomposite

Photocatalytic degradation is essential for the successful removal of organic contaminants from wastewater, which is important for ecological and environmental safety. The advanced oxidation process of photocatalysis has become a hot topic in recent years for the remediation of water. Cadmium sulphide (CdS) nanostructures doped with Titanium oxide (CdS/TiO(2)) nanocomposites has manufactured under ambient conditions using a simple and modified Chemical Precipitation technique. The nanocomposites crystal structure, thermal stability, recombination of photo-generated charge carriers, bandgap, surface morphology, particle size, molar ratio, and charge transfer properties are determined. The production of nanocomposites (CdS-TiO(2)) and their efficient photocatalytic capabilities are observed. The goal of the experiment is to improve the photocatalytic efficiency of TiO(2) in the visible region by doping CdS nanocomposites. The results showed that as-prepared CdS-TiO(2) nanocomposites has exhibited the highest photocatalytic activity in the process of photocatalytic degradation of AB-29 dye, and its degradation efficiency is 84%. After 1 h 30 min of visible light irradiation, while CdS and TiO(2) showed only 68% and 09%, respectively. The observed decolorization rate of AB-29 is also higher in the case of CdS-TiO(2) photocatalyst ~ 5.8 × 10(−4)mol L(−1) min(−1)) as compared to the reported decolorization rate of CdS ~ 4.5 × 10(−4)mol L(−1) min(−1) and TiO(2) ~ 0.67 × 10(−4)mol L(−1) min(−1). This increased photocatalytic effectiveness of CdS-TiO(2) has been accomplished by reduced charge carrier recombination as a result of improved charge separation and extension of TiO(2) in response to visible light.