Sonochemical synthesis of ZnCo2O4/Ag3PO4 heterojunction photocatalysts for the degradation of organic pollutants and pathogens: a combined experimental and computational study

Muhammad Nawaz, Mohammad Azam Ansari, Alejandro Pérez Paz, Soleiman Hisaindee, Faiza Qureshi, Anwar Ul-Hamid, Abbas Saeed Hakeem, Muhammad Taha

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

ZnCo2O4/Ag3PO4 heterostructure nanoparticles were prepared via a facile ultrasonic method and characterized using various techniques. The photocatalytic activity of ZnCo2O4/Ag3PO4 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 ZnCo2O4/Ag3PO4 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 ZnCo2O4/Ag3PO4 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 ZnCo2O4/Ag3PO4 nanoparticles than MRSA and Candida albicans. Furthermore, the effect of the ZnCo2O4/Ag3PO4 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.

Original languageEnglish
Pages (from-to)14030-14042
Number of pages13
JournalNew Journal of Chemistry
Volume46
Issue number29
DOIs
Publication statusPublished - Jun 22 2022

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Materials Chemistry

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