Abstract
Silver (Ag) nanoparticles (NPs) have been synthesized through an easy, inexpensive, and ecofriendly method. Petroselinum crispum, parsley, leaf extract was utilized as a reducing, capping, and stabilizing agent, without using any hazardous chemical materials, for producing Ag NPs. The biosynthesized Ag NPs were characterized using different characterization techniques, namely UV-Vis, FT-IR spectroscopy, X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), dynamic light scattering (DLS), zeta potential, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), transmission electron microscope (TEM), field emission scanning electron microscopy (FESEM), and energy-dispersive X-ray (EDX) analysis to investigate the optical, thermal, structural, morphological, and chemical properties of the plant extract and the biosynthesized Ag NPs. After that, the biosynthesized Ag NPs were utilized in harvesting sunlight for solar thermal generation. Surface plasmon resonance (SPR) for the green synthesized Ag NPs with the dark color were adjusted at nearly 450 nm. Once the Ag NPs are excited at the SPR, a large amount of heat is released, which causes a change in the local refractive index surrounding the Ag NPs. The released heat from the Ag NPs under the solar irradiation at the precise wavelength of plasmon resonance significantly increased the temperature of the aqueous medium. Different percentages of Ag NPs were dispersed in water and then exposed to the sunlight to monitor the temperature of the suspension. It was found that the temperature of the aqueous medium reached its highest point when 0.3 wt. % of Ag NPs was utilized. This investigation is rare and unique, and it shows that utilizing a small amount of the biosynthesized Ag NPs can increase the temperature of the aqueous medium remarkably.
Highlights
The demographic and economic growth of our modern society has led to high demand for energy, which is largely met by the use of fossil fuels. [1]
Different characterization techniques were utilized to investigate the morphology, purity, stability, crystal structure, optical, and thermal properties of the biosynthesized Ag NPs. This investigation shows that polyphenols and flavonoid complex exhibit higher reducing and capping properties than either polyphenols or flavonoid alone; this complex can provide homogenous, spherical, and monodisperse silver NPs
Ag NPs were used to investigate the plasmonic effect of different concentrations, namely
Summary
The demographic and economic growth of our modern society has led to high demand for energy, which is largely met by the use of fossil fuels. [1]. The demographic and economic growth of our modern society has led to high demand for energy, which is largely met by the use of fossil fuels. Because of its limited availability and the negative impact on the environment, it is important to build technologies that allow for more effective use of alternative energy sources [2]. In general, is safe, abundant, simple to obtain, and of unlimited supply. Solar radiation energy is one of the most promising sources for meeting future energy demand [3]. Solar energy can be effectively transformed into electrical and thermal energy through the photovoltaic and photocatalytic processes [4]. Metal-based nanomaterials are the most common photoactive materials capable of performing the processes described above [5]. Nanoparticles (NPs), which are particles with one or more dimensions within the range of 100 nanometers or less, have attracted great interest due to their unique and attractive features and their irreplaceable
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