Characterization of green synthesized nanoflowers using corn silk extract obtained in different solvents and pH media and comparative study of the effects of morphologies on catalytic, antioxidant, and antimicrobial activities.

Autor: Bakar, Ramazan, Kar, Musa, Koca, Fatih Doğan, Gökpınar, Gökhan
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Zdroj: Applied Nanoscience; Jun2023, Vol. 13 Issue 6, p4631-4640, 10p
Abstrakt: Corn silk extracts synthesized with ethanol (CSeth) and water (CSwtr) media were used for the first time in the green synthesis of hybrid copper nanoflower (Cu-hNF) structures. Moreover, the effects of extraction volume as an organic compound and different pH values on Cu-hNF synthesis performance and morphology were investigated. The morphologies of Cu-hNFs were evaluated using field emission scanning electron microscopy images (FE-SEM). Functional groups in corn silk extracts that play active role in Cu-hNF synthesis, as well as the elemental skeleton and crystallinity of Cu-hNFs, were investigated by Fourier-transform infrared spectroscopy (FT-IR) and energy-dispersion X-ray spectroscopy (EDX) and X-ray diffraction (XRD) analyses, respectively. As a result, it was found that corn silk extracts are suitable organic compound for the synthesis of Cu-hNF structures and that the pH and the amount of extract are crucial for the success of Cu-hNF synthesis. In addition, different volumes of extract and different pH values resulted in a different arrangement of petals in the nanoflower structure and thus a change in the overall morphological structure of Cu-hNF. The effects of Cu-hNFs with different morphologies on antioxidant, peroxidase, and antimicrobial activities were investigated and the relationship between morphology and activity was evaluated. The antioxidant and peroxidase-like activities of Cu-hNF structures synthesized with CSwtr extract were higher than Cu-hNF synthesized using CSeth extract. In terms of antimicrobial activity, it was found that MIC concentrations for Gram-positive and Gram-negative bacteria were different depending on the type of extract for the synthesis. Accordingly, it has been determined that the biological activities of the synthesized Cu-hNF structures may vary depending on the differences in morphology. It has been concluded that Cu-hNF can be synthesized in a controlled manner with the parameters studied (type of solvent, volume of extract, pH) for the intended use. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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