Sonochemical synthesis of ZnCo2O4/Ag3PO4 heterojunction photocatalysts for the degradation of organic pollutants and pathogens: a combined experimental and computational study. (6th July 2022)

• Record Type: Journal Article
• Authors: Nawaz, Muhammad; Ansari, Mohammad Azam; Paz, Alejandro Pérez; Hisaindee, Soleiman; Qureshi, Faiza; Ul-Hamid, Anwar; Hakeem, Abbas Saeed; Taha, Muhammad
• Is Part Of: New journal of chemistry. Volume 46:Number 29(2022)
• Page Start: 14030
• Page End: 14042
• Publication Date: 2022-07-06
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj01352e
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A ZnCo2 O4 /Ag3 PO4 nanocomposite with high photocatalytic activity against pollutants and pathogens was sonochemically prepared, characterized using various techniques and simulated computationally. Abstract : ZnCo2 O4 /Ag3 PO4 heterostructure nanoparticles were prepared via a facile ultrasonic method and characterized using various techniques. The photocatalytic activity of ZnCo2 O4 /Ag3 PO4 nanoparticles was investigated for the degradation of organic pollutants (methyl orange and bisphenol A) under visible-light irradiation. An enhanced photocatalytic efficiency was observed within 75 minutes compared with the individual constituents. A mechanism of the enhanced photocatalytic activity of the heterojunction is proposed based on density functional theory (DFT) calculations. The cytotoxicity of the ZnCo2 O4 /Ag3 PO4 nanoparticles was tested against the breast cancer cell line (MCF-7), the human colorectal cancer cell line (HCT116) and the normal human foreskin fibroblast cell line (HFF). More cytotoxicity was observed against the fibroblast cell line. The antimicrobial and antifungal activities of the ZnCo2 O4 /Ag3 PO4 nanoparticles were also examined against methicillin-resistant Staphylococcus aureus (MRSA), multidrug-resistant Pseudomonas aeruginosa (MDR-PA) and the yeast Candida albicans . It was observed that MDR-PA was more susceptible to ZnCo2 O4 /Ag3 PO4 nanoparticles than MRSA and Candida albicans . Furthermore, the effect of the ZnCo2 O4 /Ag3 PO4 nanoparticles on biofilm formation by MDR-PA, MRSA and Candida albicans was also studied. The results indicated that the inhibition of biofilm production by MDR-PA was higher than for MRSA and yeast under similar conditions.