Effect of discharge time on the size control of AgNPs prepared by non-thermal atmospheric plasma discharge

Abdallah, Shahad M.; Alwan, Alwan M.; Khamis, Raad A.

doi:10.1007/s10854-019-01624-2

Cited by 2 publications

(1 citation statement)

References 28 publications

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“…e microplasma glow discharge method is used to synthesize mainly noble metal nanoparticles [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. Studies in recent years indicate the possibility of obtaining nanoparticles from nonferrous metals [31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Microplasma Synthesis of Antibacterial Active Silver Nanoparticles in Sodium Polyacrylate Solutions

Shepida

Кuntyi

Sukhatskiy

et al. 2021

Bioinorganic Chemistry and Applications

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The great demand for functional, particularly biologically active, metal nanoparticles has led to the search for technologically effective, green, and controlled methods of synthesizing these metal nanoparticles. Plasma glow discharge is one of the most promising techniques in this direction. The results of studies based on the synthesis of colloidal solutions of stabilized silver nanoparticles (AgNPs) by the microplasma method in solutions of a nontoxic surfactant sodium polyacrylate (NaPA) are presented. It is shown that AgNPs with a size of 2–20 nm are formed in solutions of 0.05–0.2 mmol⋅L−1 AgNO3 + 5 g⋅L−1 NaPA at U = 250 V by tungsten cathode plasma glow discharge. At 20°C, the yellow solutions are formed with λmax ≈ 410 nm, which are stable during long-term storage. It was found that the process of AgNPs formation corresponds to a first-order reaction on the AgNO3 concentration. Its value has little effect on the geometry of nanoparticles, so the Ag(I) concentration in solution is one of the main factors influencing the rate of microplasma synthesis of AgNPs. The antimicrobial activity of synthesized AgNPs solutions against strains of Escherichia coli, Staphylococcus aureus, and Candida albicans was established.

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