Effect of Sulfur Source and Its Oxidation State in the Physicochemical Characteristics of CdS Nanoparticles Obtained with the Biomass of Fusarium oxysporum

• Published in: Proceedings of the National Academy of Sciences, India. Section B: Biological sciences India. Section B: Biological sciences, 2024, Vol.94 (5), p.1143-1149
• Main Authors: Loa, J. D. A., Cruz-Rodríguez, I. A., Barceinas-Sánchez, J. D. O., Rojas-Avelizapa, N. G.
• Format: Article
• Language: English
• Subjects: Ammonium; ammonium persulfate; Behavioral Sciences; Biomass; Biomedical and Life Sciences; Cadmium; Cadmium sulfide; catalytic activity; crystal structure; electrical conductivity; fluorescence; Fusarium oxysporum; India; Life Sciences; Morphology; Nanoparticles; nitrates; Nucleic Acid Chemistry; Oxidation; Physical characteristics; Plant Biochemistry; Research Article; Sodium; Sodium sulfate; Sodium sulfite; Sodium thiosulfate; Sulfite; Sulfur; Sulfur sources
• ISSN: 0369-8211; 2250-1746
• DOI: 10.1007/s40011-024-01647-8

Cadmium sulfide nanoparticles (CdS-NPs) synthesized by fungi can present different optical, electrical or chemical properties, which depend on their size and structure as well as the conditions of synthesis. Those properties confer to the CdS-NPs catalytic activity, electric conductivity and photoreactivity; therefore; they can be employed to develop several electronic products. Nevertheless, in biogenic synthesis of CdS-NPs, the role of different precursors in the physicochemical characteristics of these materials has not been explored. Thus, the aim in this work was to determine the effect of the sulfur source and its oxidization state over the CdS-NPs physicochemical characteristics synthetized by biomass of Fusarium oxysporum . CdS-NPs were synthetized from biomass of F. oxysporum , cadmium nitrate and four sulfur sources (sodium thiosulfate, ammonium persulfate, sulfate, and sodium sulfite) under the same synthesis conditions. CdS-NPs were characterized by UV–Vis and fluorescence at 450 and 520 nm, respectively. Results showed that CdS-NPs synthetized from ammonium persulfate were spheres with a diameter of 31.1 ± 6.1 nm while the synthetized from thiosulfate, sulfate and sodium sulfite presented a triangular morphology and a maximum distance of 5.4 ± 1.1, 3.5 ± 0.6 and 12.9 ± 2.4 nm, respectively. Besides, crystalline CdS-NPs were obtained with thiosulfate and sodium sulfate. Finally, it was proved that sulfur source and its oxidation state influence physicochemical characteristics of CdS-NPs like size, morphology, and crystallinity.