Microwave Assisted Green Synthesis of Ag, Ag2O, and Ag2O3 Nanoparticles

Abstract

In this study, nanoparticles containing Ag, Ag2O, and Ag2O3 mixture were synthesized by using a microwave-assisted green synthesis method. For the reduction of Ag + to Ag 0 , Rhododendron ponticum plant extract was used while the microwave synthesis method was used for the formation of silver oxides. Nanoparticles synthesized under 90 °C, 450 W, and 30-minute microwave synthesis conditions were characterized by UV-Vis, XRD, and STEM. As a result of characterization, Ag-NPs were found to show maximum absorbance peak at 432 nm in the UV-Vis spectrum, crystallite size was 46 nm according to XRD analysis, and nanoparticles showed in a spherical homogeneous distribution by STEM analysis. Our results showed that the phytochemicals in the plant extract of R. ponticum reduce Ag + ions to Ag-NPs and that the mixture of silver and silver oxide can be synthesized quickly and easily with microwave heating support. This study is important to increase the use of Ag2O and Ag2O3 nanoparticles in industrial production and medical applications. In particular, nanoparticles of silver and silver(I) oxide show great promise for widespread usage in medical polymers and nanodrugs. Because in this study, toxic chemicals were not used in the synthesis of silver oxide nanoparticles and it is a safe synthesis because there is no risk of explosion.

Optical and Structural Properties of Cobalt Nanoparticles Synthesized by Laser Ablation

“…This result is in agreement with that of Arias et al [31]. Korkmaz and Karadag [10] stated that the formation of metal oxides NPs was caused by the interaction of metal atoms with oxygen atoms or radicals during their decomposition in liquid. They also stated that the type of oxide formed depends on the temperature and oxygen partial pressure.…”

“…Metal NPs are typically formed by reducing salts of metal found in a solution or by forming metal atom aggregates by heating or vaporizing a metal in a vacuum or an inert gas [6]. They have recently received a lot of attention due to their nontoxic nature, insensitivity to air and light, size-related electronic properties, good conductivity, chemical stability, magnetic properties, potential biological applications [9], increased surface-to-volume ratio and increased magnetic properties [10,11]. Colloidal metal NPs are of great interest to researchers from a variety of disciplines, including materials science, physics, engineering, and chemistry due to their magnetic, electronic, and optical properties [12].…”

Effect of biosynthesised silver nanoparticles as sterilant on physiological and biochemical characteristics in micropropagation of Musa sapientum L.

“…In addition, several secondary peaks were detected at 28.1°, 32.4°, 46.6°, 55.1°, 57.6°, and 85°, and marked with stars. These peaks were due to the presence of silver oxide nanoparticles [31,32]. The crystallite size of the prepared AgNPs was 9.13 nm, which was calculated using the Debye−Scherrer equation: D = Kλ/(β cosθ), where D is the crystallite size (nm), K is the crystallite-shape factor constant (0.9), λ is the X-ray wavelength, β is the half-height width of the X-ray peak in radians, and θ is the Bragg angle.…”

Effect of the Working Pressure and Oxygen Gas Flow Rate on the Fabrication of Single-Phase Ag2O Thin Films

“…Several materials are used for the construction of p-n junctions; among them, ZnO, β-Ga 2 O 3 , and MoS 2 have been used as n-type semiconductor materials, and silver oxide, copper oxide, and nickel oxide have been employed as p-type semiconductor materials for the manufacturing of p-n junction-based photodetectors [3,4]. In particular, Ag x O y (silver oxide) exists in different crystal forms, such as AgO, Ag 2 O, Ag 3 O 4 , and Ag 2 O 3 , which result in different electrical, chemical, and optical properties [5][6][7]. Among them, Ag 2 O exhibits a stable structure, excellent thermal stability, and photoreactivity [8,9].…”

“…The thin films have been applied in many practical fields, such as gas sensors, photocatalysts, and photodetector manufacturing [12,13], owing to their excellent electrical properties and wide and strong light absorption in the visible light region [14]. However, fabricating single phase Ag 2 O thin films using conventional deposition systems remains challenging [6].…”