BSA mediated Ag@Bi2S3 composites: synthesis, characterization, photodegradation of mixed dyes via metal-semiconductor interface, antimicrobial and antioxidant activities. (September 2020)

• Record Type: Journal Article
• Authors: Ayodhya, Dasari; Veerabhadram, Guttena
• Is Part Of: Materials today chemistry. Volume 17(2020)
• Publication Date: 2020-09
• Subjects: Bovine serum albumin -- Ag@Bi2S3 nanorods -- Mixed dyes degradation -- Antimicrobial activity -- Antioxidant activity; Chemistry -- Periodicals; Materials -- Research -- Periodicals; Materials science -- Periodicals; Chemistry; Materials -- Research; Electronic journals; Periodicals; 660.282
• DOI: 10.1016/j.mtchem.2020.100320
• Languages: English
• ISSNs: 2468-5194

Abstract

Abstract: Nowadays, the development of metal-metal sulfide interface semiconductors using green approach is best material for the photocatalytic and biological applications. Here, we provided for the first time, an environmentally friendly route to fabricate bovine serum albumin (BSA) assisted Ag@Bi2 S3 composites through a metal-metal sulphide interface via a simple hydrothermal method for the evaluation of photochemical and biological applications. The synthesized composites were characterized by UV–vis DRS, PL, XRD, TEM, and N2 adsorption-desorption isotherms. The UV–vis DRS and PL spectra show that the obtained nano-sized Ag@Bi2 S3 composite displays enhanced visible-light absorption and a decreased fluorescence emission compared to that of Bi2 S3 nanorods (NRs). The photocatalytic performances of the synthesized composites were evaluated by the degradation of the single (RhB and MB) and mixed dye (RhB+MB) under sunlight irradiation. The results indicated that the Ag@Bi2 S3 composite exhibits superior photocatalytic activity (98.38%) than that of individual Ag NPs and Bi2 S3 NRs due to the synergistic effect of Ag and Bi2 S3 nanophases in the Ag@Bi2 S3 composite, which results in an effective charge separation, fast electron transfer from Ag to Bi2 S3, and a low recombination of photo-induced electron-hole pairs. The Ag@Bi2 S3 composite also has good recycling stability up to 5 cycles and its mechanism also investigated. The evaluation of reactive species during the photocatalytic reaction was also carried out. Further, the effects of Bi2 S3 and Ag NPs on the antimicrobial and antioxidant activity of the resultant Ag@Bi2 S3 composite were also systematically investigated. Graphical abstract: Image 1 Highlights: Eco-friendly synthesis of BSA mediated Ag NPs, Bi2 S3 NRs, and Ag@Bi2 S3 composite. Ag NPs dispersed on the surface of Bi2 S3 NRs in Ag@Bi2 S3 composite. Ag@Bi2 S3 composite exhibited superior photocatalytic performance due to SPR. Ag@Bi2 S3 composite has good recycling stability up to five cycles. Ag@Bi2 S3 composite exhibited reasonable antibacterial and antioxidant activities.