Photocatalytic Degradation of Azure-A Using Visible Light-Responsive Metal Bismuth Iodides: A Comparative Study

The total annual contribution of textile, material, and other industrial effluents is large in numbers and discharges into water bodies that are not biodegradable. Hence, there is a need for the disposal of dyestuff water effluents with financially savvy innovation. In this regard, photo-catalytic degradation of Azure-A is considered a highly significant and acceptable procedure for organic dye decomposition. In the past few years, metal iodide has also received much attention due to its great decomposition efficiency as a photocatalyst to decompose different organic dyes. The present work investigates the comparative photocatalytic competence of synthesized metal bismuth iodides (MBI). The various operational parameters, such as the effect of the Azure-A concentration, the amount of photocatalyst, the pH of the experimental solution, and the intensity of light, were studied. The maximum degradation values for cobalt bismuth iodide were obtained. Photocatalysts were static and maintained significant degradation efficiency, ensuring their reusability.