Glutathione promoted expeditious green synthesis of silver nanoparticles in water using microwaves

Abstract

Silver nanoparticles ranging from 5-10 nm in size have been synthesized under microwave irradiation conditions using glutathione, an absolutely benign antioxidant that serves as the reducing as well as capping agent in aqueous medium. This rapid protocol yields the nanoparticles within 30-60 s at a power level as low as 50 W. The effect of microwave power on the morphology of ensuing silver nanoparticles is investigated for this green and sustainable procedure which is adaptable for the synthesis of palladium, platinum and gold nanoparticles.

High Value Products from Waste: Grape Pomace Extract—A Three‐in‐One Package for the Synthesis of Metal Nanoparticles

“…[12][13][14][15][16] As sugars [13] and polyphenolics from tea and coffee [17] extracts are suitable for the generation of nanoparticles, we envisioned wine to be an even better option due to their alcohol, sugar, and anthrocyanin content. Herein, we report an extremely easy and completely green synthetic method for generating a number of metal nanoparticles, such as Au, Ag, Pd, and Pt.…”

Gold nanoparticle formation using Shewanella oneidensis: a fast biosorption and slow reduction process

“…15 Sources of sulfur in bacteria are amino acids (cysteine and methionine) and glutathione. 28,29 Sporosarcina ureae immobilized Au (without precipitation of metallic Au) after exposure to an Au-L-asparagine complex, the immobilized gold was associated with the low-molecular weight intracellular protein fraction. 30 In the case of S. oneidensis, it could be that Au(III) is reduced to an Au(I)-S complex, which is then further reduced to Au(0) by H 2 or formate.…”

Utility of silver nanoparticles for the analysis of diosmin and rutin in Persicaria salicifolia extract, authentic and pharmaceutical dosage forms monitored with their haemostatic activity

“…This extinction band results when the incident photon frequency is resonant with the collective excitation of the conduction electrons and is known as the surface plasmon resonance (SPR). SPR excitation results in wavelength-selective absorption with extremely large molar extinction coefficients where the peak wavelength and intensity of the SPR spectrum is dependent upon the size, shape and inter-particle spacing of the nanoparticle as well as its own dielectric properties and those of its local environment including the substrate, solvent and adsorbates (Baruwati et al, 2009;Nezhad et al, 2010). Silver nanoparticles exhibit significant antibacterial, antiviral, antifungal, antiinflammatory effects, in addition; they are used in cancer diagnosis and treatment (Ahmed et al, 2003).…”

“…Nanoparticles made of noble metals have been the focus of research for many decades as a result of their intriguing optical properties; among the noble metal nanoparticles, silver nanoparticle gained special interest because of their advantageous properties concerning stability and conductivity (Popescu et al, 2010;Baruwati et al, 2009), in addition, they have been the subject of intensive research because of their unique and tunable surface plasmon resonance (SPR) properties when dispersed in liquid media exhibiting a strong characteristic UV-Vis extinction band that is not present in that of the bulk metal. This extinction band results when the incident photon frequency is resonant with the collective excitation of the conduction electrons and is known as the surface plasmon resonance (SPR).…”