Assessing the photocatalytic activity of visible light active Bi2S3-based nanocomposites for Methylene Blue and Rhodamine B degradation
Bachir Yaou Balarabe, Yerkanat N. Kanafin, Kuralay Rustembekkyzy, Imanzhussip Serkul, Meruert A. Nauryzbaeva, Timur Sh. Atabaev
Abstract
High levels of organic compounds, notably synthetic dyes like Methylene blue (MB) and Rhodamine B (RhB), in untreated effluents have become a major environmental concern, endangering human health and ecosystems. These dyes are difficult to remove due to their non-biodegradable nature, prompting extensive research in this area. Photocatalysis has emerged as a promising, environmentally friendly method that only requires a light source and a photocatalyst for pollutant degradation. Bismuth sulfide (Bi 2 S 3 ) stands out among other photocatalytic materials due to its narrow band gap, strong light absorption in the visible range, and nontoxicity, making it a good candidate to improve the overall photocatalytic efficiency. Therefore, this review article focuses on recent advances in Bi 2 S 3 -based nanocomposites and their role in the effective degradation of organic pollutants, particularly MB and RhB, through enhanced photocatalytic mechanisms.