Browsing by Author "Smutok, Oleh"

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Bioinspired Silver Nanoparticles from Artemisia Lerchiana as Durable Electrodes for Next-Generation Supercapacitors
(Royal Soc Chemistry, 2026) Baran, Mehmet Firat; Khalilov, Rovshan; Abdullayeva, Nailya; Hasanova, Gunay; Mammadova, Afat; Smutok, Oleh; Omarova, Sabina
A novel, eco-friendly approach for synthesizing silver nanoparticles (AgNPs) using Artemisia lerchiana extract is presented, where plant-derived biomolecules act as natural reducing and stabilizing agents. The biosynthesized AgNPs exhibit uniform spherical morphology with sizes of 25-50 nm, high crystallinity confirmed by X-ray diffraction (XRD), elemental purity verified by energy-dispersive X-ray spectroscopy (EDX), characteristic functional groups identified by Fourier-transform infrared spectroscopy (FTIR), surface morphology characterized by scanning electron microscopy (SEM), and excellent thermal stability demonstrated by thermogravimetric analysis (TGA). Electrochemical evaluation demonstrated pronounced pseudocapacitive behavior, with a maximum specific capacitance of 322.14 F g-1 at 0.07 A g-1, 89.25% capacitance retention after 5000 cycles, an energy density of 4.74 Wh kg-1, and a power density of 336.76 W kg-1. Electrochemical impedance spectroscopy (EIS) analysis indicated relatively low series resistance (41.2 Omega) and charge-transfer resistance (11.7 k Omega), confirming efficient ion diffusion and favorable electrode-electrolyte interactions. This green synthesis strategy provides a cost-effective and sustainable route for producing structurally robust and electrochemically active supercapacitor electrodes, demonstrating the potential of combining plant biochemistry with nanotechnology for the development of environmentally benign energy-storage materials.
Citation - WoS: 7
Citation - Scopus: 9
Silver Nanoparticles for Anticancer and Antibacterial Therapy: a Biogenic and Easy Production Strategy
(Wiley-v C H verlag Gmbh, 2025) Dogan, Serap; Baran, Ayse; Baran, Mehmet Firat; Eftekhari, Aziz; Khalilov, Rovshan; Aliyev, Elvin; Smutok, Oleh
Metal nanoparticles are very valuable products due to their wide range of uses. Among these silver nanoparticles are beneficial products used in many fields, especially in medicine, due to their antibacterial properties. This research aimed to produce silver nanoparticles (Ag NPs) that are both affordable and environmentally friendly. For this purpose, Ag NPs were quickly obtained from domestic waste components of the carrot plant (Daucus carota L.). The UV-vis spectrophotometric, TEM, AFM, FE-SEM, STEM, EDX, XRD, and DLS analyses were performed to determine the properties of the obtained Ag NPs. It has been found that their surface charge is -21.8 mV, with a maximum absorbance at a wavelength of 421.37 nm, spherical appearance, and an average size distribution of 85.41 nm. The anticancer and antibacterial activities of the produced Ag NPs were investigated by MTT and microdilution. The synthesized Ag NPs showed the most significant antimicrobial effect on Pseudomonas aeruginosa ATCC 27833 with microdilution and low concentration. However, they were also determined to be effective on Bacillus subtilis ATCC 11774 and on Candida albicans ATCC 10231 pathogenic strains. In fact, the effective concentrations of Ag NPs on these strains were significantly lower than the antibiotics used. Furthermore, aside from exhibiting a superior anticancer impact on CaCO-2 cancer cells, it was established that Ag NPs also had remarkable efficacy in inhibiting U118 and Skov-3 cancer cells.