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. 2022 Apr 25;13:798751. doi: 10.3389/fpls.2022.798751

FIGURE 1.

FIGURE 1

Characterization of green synthesized Zn NPs using Mentha arvensis leaves with (A) UV-visible spectroscopy, (B) scanning electron microscopy (SEM), (C) transmission electron microscopy (TEM), and (D) X-ray diffraction analysis (XRD). SEM analysis showed aggregated nature of Zn NPs in the solution used, indicating a gel-like appurtenance, while clear morphology of the green synthesized NPs can be seen in TEM image, revealing an irregular shape. The XRD peaks are in reference to the standard present in the library data of the XRD machine, which confirmed the presence of Zn NPs in the sample.