Bismuth series photocatalytic materials for the treatment of environmental pollutants

Photo-excited nanostructured materials are used for heterogeneous photocatalysis which degrades toxic pollutants into water and CO 2 under visible light irradiation. This holds a profound impact for sustainable energy substitutes and environmental remediation. The efficient utilization of solar light for the development of active photocatalysts under visible light remains a significant focus for researchers. Bismuth-based photocatalysts such as BiOX (X = Cl, Br, I), Bi 2 O 3 , and Bi a AO b (A = Fe, V, W, Mo) are newly exploited active photocatalysts for the degradation of toxic pollutants (such as methyl orange (MO), methylene blue (MB), rhodamine B (RhB), azo dye (4BS), phenol, and Cr(VI)) under visible light of the electromagnetic spectrum. The photocatalytic activity of the mentioned active Bi-based catalysts highly depends on their morphology, crystallinity, exposed facets, phase, particle size, bandgap, and surface area. This chapter deals with the detailed synthesis and applications of Bi-based nanostructured materials. It will help the scientific community optimize the synthesis of Bi-based nanostructured materials with exceptional environmental remediation qualities.