Green synthesis, characterization of silver sulfide nanoparticles and antibacterial activity evaluation

Abstract

This research work presents a facile and green route for synthesis silver sulfide (Ag2SNPs) nanoparticles from silver nitrate (AgNO3) and sodium sulfide nonahydrate (Na2S.9H2O) in the presence of rosemary leaves aqueous extract at ambient temperature (27 oC). Structural and morphological properties of Ag2SNPs nanoparticles were analyzed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The surface Plasmon resonance for Ag2SNPs was obtained around 355 nm. Ag2SNPs was spherical in shape with an effective diameter size of 14 nm. Our novel approach represents a promising and effective method to large scale synthesis of eco-friendly antibacterial activity silver sulfide nanoparticles.

Iron Oxide Nanoparticles-Plant Insignia Synthesis with Favorable Biomedical Activities and Less Toxicity, in the “Era of the-Green”: A Systematic Review

“…Lemon leaf extract possessed higher bactericidal activity compared to ampicillin, with greater anti-bacterial activity for B. subtilis (26.1 ± 0.24 mm inhibition zone) as compared to K. pneumoniae (21.5 ± 0.36 mm inhibition zone) [9].…”

“…Plant parts used to prepare extracts could be the entire plant [1], but not limited to, pods [7], leaves [1,[8][9][10][11][12][13][14][15][16][17], roots [18,19], seeds [20,21], fruits [22][23][24], fruit peel [22,43], berries [23], even seaweeds [25], as well as essential oils [26], honey [44], rhizomes [38], fulfilling the zero-waste concept, for more sustainability, as well as the fact that each part has its own beneficial effects and unique bioactive constituents.…”

“…Plant extract preparation, as illustrated in Figure 2, is executed after washing the plant part with tap water, then deionized water, to remove any dust or particulate matter. Second, after drying the plant parts well, they are chopped into small pieces [13], via mortar and pestle grinding [14][15][16]20] or homogenized by an electric grinder [7][8][9]24]. Finally, the obtained powder or paste is heated in sterile water for some time, till extraction is complete.…”

“…and, finally, checked by the chief investigators, to include all studies(s) that were found to be associated with green-synthesized plant-based IONPs and were summarized in Tables 1-6. Brown Seaweed, Sargassum muticum polysaccharides [3] Trigonella foenum-graecum saponin, alkaloids [4] Kappaphycus alvarezii polysacharides [5] Persea Americana polysacharides [6] Papaver somniferum; Papaveraceae alkaloids [7] Glycosmis mauritiana; Rutaceae Flavanone [8] Lemon; Citrus triterpenoid [9] Rhamnella gilgitica ω-phenylpentaene fatty acid amide diglycosides [10] Composite of Psidium guavaja; Moringa oleifera phenolic acids, flavonoids, isothiocyanates, tannins, saponins [11] Sida cordifolia alkaloids [12] corn of Z. mays L flavonoid glycosides, polyphenols [13] Coriandrum sativum terpenoids, polyphenols [14] Coriandrum sativum flavonoids [15] Leucas aspera; Lamiaceae alkaloids, flavonoids [16] Neem (Azadirachta indica) sitosterol, polyphenolic flavonoids [17] Skimmia laureola saponins, tanins, flavonoids [18] Rheum emodi flavonoids [19] Fenugreek saponins [20] Aloe vera/Flax seed flavonoids, terpenoids, polysacharides, tannins, sterols/polysacharides, alkaloids [21] Hyphaene thebaica phenols and flavonoids [22] Withania coagulans alkaloids, steroidal compounds [23] Couroupita guianensis; Lecythidaceae carotinoids and sterols [24] Green seaweeds, U. prolifera, U. flexuosa, U. linza, U. intestinalis, U. clathrate, one brown seaweed, S. boveanum polysacharides [25] Table 1. Cont.…”

Helianthus annuus assisted green synthesis of Co3O4 and Ag‐Co3O4 and evaluation of their catalytic activities toward photodegradation of crystal violet dye

“…20 In this way, Jinlong and co-workers 21 More recently, the green synthesis of metal oxides and hetero structured materials has received much attention due to its environmentally friendly as well as economical point of view. [26][27][28][29][30] In green synthesis various biological (plants and animals) substrates are employed as reducing and stabilizing agents. For instance, Zhao and co-workers 31 34 Fan et al 35 and Han et al 36 under visible irradiation.…”