Green Synthesis of ZnO/Ag Nanoparticles and Their Effect on the Skin Determined Using IR Thermography

Abstract

In this study, a green synthesis approach was used to prepare (ZnO/Ag NPs). These Zno/Ag NPs' optical and structural characteristics were investigated using TEM, FE-SEM, X-ray diffraction, and UV-vis spectroscopy. The highest peak in the UV-vis absorption spectra was seen at 400 nm. The ZnO/Ag NPs that were created featured narrow, strong peaks that indicated high crystallinity of the nanoparticle. The X-ray pattern reveals that these peaks match to the ZnO hexagonal wurtzite phase structure. ZnO/Ag nanoparticles were spherical in shape, small (varying in size from 17.8 to 73.6 nm), and had regular, homogenous structures, according to the FE-SEM data. When ZnO/Ag NPs were investigated at various magnifications using TEM, it was discovered that they were primarily spherical and evenly distributed throughout the sample. Using infrared thermal imaging (IRT), it was possible to see how the skin's temperature changed when the ZnO/Ag NPs had an impact. Following that, the sample was applied to the skin in two different ways: first, by mixing it with water, and second, by applying Vaseline. Both applications included no radiation and produced a rise in temperature.It was determined how much the temperature change in two bands (3–5 and 8–14 µm) affected the radiance. For picture R8 without radiation, the highest value in the range (3-5) µm was (0.9733), while for image R2* with radiation, the highest value in the range (8–12) µm was (0.9365).As temperature rises, the total spectrum radioactive emission moves towards shorter wavelengths in proportion to the area under the curves. Radial heat diffusion is seen by comparing line profile data from various temperatures, which results in the energy from the submerged nanoparticles being transferred to the surrounding areas.