Trends in photocatalytic degradation of organic dye pollutants using nanoparticles: A review

• Published in: Inorganic chemistry communications Vol. 159; p. 111613
• Main Authors: Lanjwani, Muhammad Farooque, Tuzen, Mustafa, Khuhawar, Muhammad Yar, Saleh, Tawfik A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-01-2024
• Subjects: Nanocomposite; Organic dyes; Photocatalyst nanoparticles; Photocatalytic degradation; Photocatalytic degradation; Nanocomposite; Organic dyes; Photocatalyst nanoparticles
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2023.111613

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•Advance management for active elimination of organic pollutants is of serious concern.•A state of art review on nanoparticles used for photocatalytic degradation of dyes.•Advance photo based treatment technologies are discussed.•The present review describes different types of nanoparticles (NPs) applied for the degradation of dyes pollutants.•The degradation of dyes is effected by size, surface area and amount of catalyst.
The development of the textile industry is a major concern due to the effluents of organic dyes. These organic dyes contaminate the drinking water and cause a carcinogenic risk to humans. Nanomaterials such as semiconductors can be used for the degradation of dye pollutants through photocatalysis. Several parameters, including catalyst dosage, irradiation time, light sources, initial concentration of dyes, temperature, and pH, significantly influence the degradation of the dyes. Single metal nanoparticles such as Ag, Au, Fe, and Cu NPs were also used for the degradation of organic dyes. Photocatalytic nanomaterials can be classified into three different generations. The first-generation catalysts consist of single-component materials such as metal oxide Fe3O4, ZnO, SnO2, TiO2, and metal nanoparticles such as silver nanoparticles (AgNPs), CuNPs, and gold nanoparticles (AuNPs). The second-generation catalysts consist of binary metal oxides, such as ZnO-SnO2, PbO-Al2O3, Fe3O4-CeO2, WO3-ZnO, and ternary metal oxides, such as ZnO-CuO-Ag2O, Fe3O4-TiO2-CoMoO4. The third-generation catalysts comprise photocatalysts spread on inert solid substrates, such as Ce/TiO2 and Al/ZnO. This review describes different types of nanoparticles (NPs) used for dye degradation, including metal nanoparticles, metal oxides, and their doping with other metals, semiconductors, binary metal oxides, and ternary metal oxide nanocomposites.