Ceftazidime and 4-nitrophenol inactivation using alginate-based spheres inlaid with mycogenic silver nanoparticles. (June 2022)

• Record Type: Journal Article
• Authors: Cunha, F.A.; Agressott, E.V.H.; Paschoal, A.R.; de Menezes, F.L.; Fechine, L.M.U.D.; Martins, R.T.; de Cássia C Barbosa, R.; Cunha, M.C.S.O.; Menezes, E.A.; Coutinho, H.D.M.; Fechine, P.B.A.
• Is Part Of: Materials today sustainability. Volume 18(2022)
• Publication Date: 2022-06
• Subjects: Alginate spheres -- Antibiotic -- Pollution -- Rhodotorula; Materials science -- Environmental aspects -- Periodicals; Sustainable engineering -- Periodicals; 620.11
• DOI: 10.1016/j.mtsust.2022.100114
• Languages: English
• ISSNs: 2589-2347

Abstract

Abstract: The aim of this work was synthetized alginate-based spheres to encapsulate biosynthesized AgNPs, produced by the fungis: Rhodotorula mucilaginosa (Ag@Alg Rm) and Rhodotorula glutinis (Ag@Alg Rg). These spheres were characterized through UV–Vis and Fourier-transform infrared spectroscopies, X-Ray diffraction and scanning electronic and atomic force microcopies. In addition, their catalytic activities were evaluated in front of drug molecules, considering as pollutants, such as 4-nitrophenol (4-NP) and ceftazidime (Ceft). The average size diameter of the spheres Ag@Alg Rg and Ag@Alg Rm were 2.49 and 2.78 mm, respectively, and the plasmon band was detected around 400 nm. The particles presented a rough appearance, showing AgNPs been distributed onto alginate sphere's surface. The catalytic activity for 4-NP pollutant was around 95% of removing in 30 min for both types of spheres. The spheres were also able to degrade the antibiotic Ceft, which did not show activity against Klebsiella pneumoniae and Escherichia coli . This multi-focal catalytic activity profile of both Ag@Alg Rm and Ag@Alg Rg particles presents great potential application, principally considering a sustainable environment and effluents treatment.