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Novel Dy2O3/ZnO-Au ternary nanocomposites: Green synthesis using pomegranate fruit extract, characterization and their photocatalytic and antibacterial properties

[Display omitted] •Green synthesis of Dy/ZnO-AuNCs in presence of pomegranate fruit extract.•The effect of different reaction condition studied on shape and size of product.•The products were characterized by HRTEM, FE-SEM, TEM, EDS, XRD, FT-IR and UV/Vis.•The antibacterial activity of Dy/ZnO-AuNCs...

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Published in:Bioorganic chemistry 2021-10, Vol.115, p.105204, Article 105204
Main Authors: Khormali, Keyvan, Mizwari, Zirar M., Masoumeh Ghoreishi, Seyedeh, Mortazavi-Derazkola, Sobhan, Khezri, Behrooz
Format: Article
Language:English
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Summary:[Display omitted] •Green synthesis of Dy/ZnO-AuNCs in presence of pomegranate fruit extract.•The effect of different reaction condition studied on shape and size of product.•The products were characterized by HRTEM, FE-SEM, TEM, EDS, XRD, FT-IR and UV/Vis.•The antibacterial activity of Dy/ZnO-AuNCs was studied against various bacteria.•The photocatalytic studies were performed on dyes under UV and sunlight radiations. In this study for the first time, high efficient, eco-friendly and novel Dy2O3/ZnO-Au ternary nanocomposites (Dy/ZnO-AuNCs) were prepared in presence of pomegranate fruit (PF) extract as capping and reducing agents (Dy/ZnO-AuNCs@PF). The influence of various parameters such as basic agents, reducing agents, sonication power, and sonication time were performed to reach the optimum condition. The formation of the products was characterized by FT-IR, HRTEM, XRD, FE-SEM, TEM, EDX and DRS techniques. The XRD and TEM analysis showed that the morphology and crystallite size of nanocomposites were spherical morphology and 85–90 nm, respectively. The obtained Dy/ZnO-AuNCs@PF were investigated as a nanocatalyst for degradation of erythrosine (ES) as anionic dye and basic violet 10 (BV10) as cationic dye under UV and visible light irradiations. The Dy/ZnO-AuNCs@PF exhibited higher photodegradation against ES (89.6%) and BV10 (91.3%) than pure Dy2O3 (63.1% for ES, 66.5% for BV10) and Dy2O3/ZnO (64.5% for ES, 70.8% for BV10) under UV irradiation. It was found that gold nanoparticles have significant effect on Dy/ZnO-AuNCs@PF catalytic performance for decomposition of organic pollutants. In addition, Dy/ZnO-AuNCs@PF showed excellent in-vitro antibacterial activity against A. baumannii, S. aureus and P. mirabilis with MIC and MBC values of (5, 80 mg/ml), (5, 40 mg/ml) and (2.5, 20 mg/ml), respectively. Generally, according to its excellent antibacterial and catalytic activity, Dy/ZnO-AuNCs@PF can be used in biomedical and environmental applications.
ISSN:0045-2068
1090-2120
DOI:10.1016/j.bioorg.2021.105204