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Brindha, B.; Okla, Mohammad K.; Kokilavani, S.; Sabariselvan, L.; Al-amri, Saud S.; Abdel-Maksoud, Mostafa A.; Harini, G.; Alshuwaish, Raida; Alsakkaf, Waleed A.; Khan, S. Sudheer
Journal of cleaner production, 04/2024, Letnik: 451Journal Article
Infectious diseases, particularly bacterial infections, pose a global crisis with significant impacts on public health and economic stability due to the emergence of multi-drug resistance and limitations in existing therapeutic options. The present study focused on the development of photocatalytic disinfectant and silver-decorated hexagonal zinc oxide nanorods (Ag/ZnO NRs) were fabricated through an ultrasonic-assisted solvothermal method, and investigated for the photocatalytic inactivation on E. coli. The morphological, structural, and optical characteristics of the fabricated Ag/ZnO NRs were systematically studied through various analytical techniques. Here, 3%Ag/ZnO NRs showed 96.9% inactivation of E. coli within 120 min of visible light irradiation. The excellent inactivation efficiency of the photocatalyst could be attributed to the higher charge carrier mobility, efficient electron-hole pair separation, and highvisible light harvesting ability. The Schottky heterojunction was proposed as a possible mechanism for the photoinactivation of E. coli. Further, the impacts of different dosages of nanocomposites (NCs) and varying pH on bacterial inactivation were studied under visible light exposure. The reusability and stability of the NCs were investigatedfor 6 consecutive cycles of photoinactivation and it showed excellent efficiency (91.16%) of the photocatalyst for prolonged usage. The real-time application was assessed using reclaimed wastewaterand the influence on the organic matter was determined using COD analysis. The proposed study offers a significant point reference for the practical application of photocatalysis forthe inactivation of antibiotic-resistant microbes present in water bodies and environmental wastewater. Display omitted •Ag/ZnO nanorods with (200) hexagonal facets were fabricated via ultrasonic assisted method.•Optimized 3%Ag/ZnO exhibited excellent photocatalytic inactivation of E. coli.•Schottky heterojunction with enhanced charge separation elucidated from PL and EIS.•Real time waste water photoinactivation evaluation suggests its practical applicability.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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