Synthesis of Silver Nanoparticles Using the UV-Irradiation Technique in an Antibacterial Application

Abstract

The article describes a new way to the synthesis of silver nanoparticles based on UV-irradiation energy. Our technique allows for producing high quality and clean nanoparticles. Moreover, our photolysis approach allows us to synthesis silver nanoparticles (Ag NPs) with very low cost and short time. The nanostructures were characterized using X-ray diffraction, transmission electron spectroscopy and UV-visible spectrometer. Most of the Ag NPs are shown to be a hexagonal shape and some of them are a spherical shape. The average size of nanoparticles was calculated to be around 20.23 nm. The morphology, size, and ion concentration of the synthesized Ag NPs determine their absorbance and transmittance at the UV region of spectrum. Silver's antimicrobial properties are well known and due to their antimicrobial activity, silver nanoparticles become more important. Therefore, our synthesized Ag NPs were used against Staphylococcus aureus (Gram-positive bacteria) and E. coli (Gram-negative bacteria). The results show that the nanoparticles at a concentration of 0.2 mg/ml demonstrated a high activity of antimicrobials, resulting in a good inhibition for both grams positive and negative bacteria. However, the effect of Ag NPs on gram-positive bacteria is higher than gram-negative bacteria.

Fabrication of Solar Cells Using Novel Micro- and Nano-Complexes of Triazole Schiff Base Derivatives

“…The maximum power can be calculated from relationship (1). The fill factor is a substantial parameter that can be calculated from relationship (2), which defines the power conversion efficiency of the solar cellthe conversion efficiency is the ratio between the maximum electrical power coming out and the falling photovoltaic power, which can be calculated as in the relationship (3). There are numerous factors that can significantly influence (F.F.…”

“…The best fill factor and conversion efficiency was achieved when using nano L1Ag. Pm = Vm * Im (1)F.F = Pm/V OC * I SC (2) η = (Pm/R*A)×100 (3) (1) Table 4. Solar cell parameters of dye sensitizer solar cell for (Ag/nanoL1Ni/silicon/Al, Ag/nanoL1Ag/silicon/Al, Ag/nanoL1Pd/silicon/Al) and (Ag/L1Ni /silicon/Al, Ag/L1Ag/silicon/Al, Ag/L1Pd/silicon/Al)…”

“…The development of dye-sensitized solar cells has received significant attention due to its increased energy-conversion efficiency and low manufacturing cost [1], [35], [37]. Nanomaterials have an important role in the application of solar cells [2], [3], [4]. Several studies are being done on the applications of semiconductor nanocompounds, electrodes, organic dyes, electrolytes, and counter electrodes to increase the efficiency of dye-sensitized solar cells.…”

Nanoscale Synthesis of Metal(II) Theophylline Complexes and Assessment of Their Biological Activity

“…TMCs drugs (TMCD) have become increasingly important in inorganic and medicinal chemistry and have attracted a great deal of attention over the past decade in drug development strategies [4,5]. The studies have also shown that the nanomaterials and nanocomplexes have distinctive physical, chemical and biological applications [6][7][8][9][10][11][12][13][14][15][16][17]. Theophylline, 1,3-dimethylxanthine, with significant biological characteristics, is a purine alkaloid.…”

Water Treatment Ability of CuO-ZnO Nanocomposites Synthesized by Laser Ablation and Anodization Techniques

“…Nanochemistry is one of the modern sciences that has many applications [1], [2], [3], [4], [5]. It is known that nanosized metal composites has different chemical, physical, and optical properties than for their bulky sized composites, which is due to their composition dependent properties, and these advanced properties can give materials designs that offer many advantages in the communication industry.…”