“Green” synthesis of nanoparticles of precious metals: antimicrobial and catalytic properties

Скіба, Маргарита; Vorobyova, Viktoria; Пивоваров, А. А.; Shakun, Anastasiia; Gnatko, Olena; Трус, Інна

doi:10.15587/1729-4061.2018.144602

Cited by 18 publications

(10 citation statements)

References 33 publications

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“…e color change of the mixture of "AgNO 3 -PC OrPWE" to brown indicates the formation of AgNPs. e strong SPR band at 400-450 nm in UV-Vis spectra additionally confirms the formation of the AgNPs [1][2][3][4][5][23][24][25].…”

Section: Synthesis Of Silver Nanoparticles (Agnps) With Orange Peelmentioning

confidence: 99%

Synthesis of Silver Nanoparticles Using Orange Peel Extract Prepared by Plasmochemical Extraction Method and Degradation of Methylene Blue under Solar Irradiation

Скіба

Vorobyova

2019

Advances in Materials Science and Engineering

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In pursuit of greener nanoscale research, the utilization of the reductive potency of a common byproduct of food-processing industry, i.e., orange peel, has been researched to prepare "green" silver nanoparticles (AgNPs). e synthesized AgNPs were characterized by UV-Vis spectroscopy, dynamic light scattering, and scanning electron microscopy. e results confirmed that silver nanoparticles were formed at the investigated concentrations of Ag + (0.25-6.0 mmol/L) during 5-10 minutes, at ratio AgNO 3 : extract (mL) � 1 : 1, and at 75°C. From the SEM images, the silver nanoparticles are found to be almost spherical. Powder XRD results reveal that Ag nanoparticles had a face-centered cubic crystal structure. e zeta potential value for AgNPs obtained was − 21.7 mV, indicating the moderate stability of synthesized nanoparticles. e effect of pH on nanoparticle synthesis has been determined by adjusting the pH of the reaction mixtures. e catalytic effectiveness of the prepared green catalyst, AgNPs, has also been investigated in catalytic degradation of methylene blue (MB) dye. e catalytic degradation reaction under solar irradiation was completed (99%) within 35 min, signifying excellent catalytic properties of silver nanoparticles in the reduction of MB.

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Section: Synthesis Of Silver Nanoparticles (Agnps) With Orange Peelmentioning

confidence: 99%

Synthesis of Silver Nanoparticles Using Orange Peel Extract Prepared by Plasmochemical Extraction Method and Degradation of Methylene Blue under Solar Irradiation

Скіба

Vorobyova

2019

Advances in Materials Science and Engineering

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“…Nowadays, from an ecological point of view, it is important to solve the problem of utilization or practical application in various solid wastes in different industries, as well as to increase the recycling and reuse of illiquid wastes (Skіba et al 2018). Therefore, a method of efficient utilization of the formed precipitate in the composition of cements was developed (Martínez-Cruz et al 2021).…”

Section: Utilization Of Sludge In the Composition Of Cementmentioning

confidence: 99%

Techno-Economic Feasibility for Water Purification from Copper Ions

Трус¹,

Halysh²,

Gomelya³

et al. 2021

Ecol. Eng. Environ. Technol.

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The main direction of the industrial development of Ukraine is the solving of the environmental pollution problems under the conditions of preservation of natural resources through complex use of raw materials with involvement of industrial wastes. The developed technology is intended for galvanic, accumulator, machine-building, mine and other enterprises, the wastewater from which contains ions of heavy metals. Heavy metal ions are extremely dangerous toxic substances because of a cumulative effect on aquatic organisms. In order to remove copper ions from aqueous solutions, the chemical precipitation with lime is used. The choice of reagent is associated with its cheapness. The most effective reagent precipitation of copper ions in the form of hydroxide occurs when the pH is raised to 10. In this work, the influence of sludge, which is formed as a result of water purification from copper ions, on the properties of cement was investigated. The effect was evaluated on the following properties: normal density of cement, hardening time, compressive strength at the age of 2 and 28 days and water separation coefficient. This allowed us to develop effective ways to their disposal. The developed method provides: a high degree of metal removal (up to 98-99%); simplicity of technological process; small capital and operating costs; complex technology of wastewater treatment process. Thus, the results of the study will contribute to the creation of lowwaste and non-waste technologies for waste processing and disposal.

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“…e solution of AgNO 3 -PVA was in the reactor with the discharge of plasma. A detailed diagram of the installation and image of the plasma discharge is provided in the work [28,29].…”

Section: Synthesis Of Silver Nanoparticles (Agnps)mentioning

confidence: 99%

Preparation of Silver Nanoparticles in a Plasma-Liquid System in the Presence of PVA: Antimicrobial, Catalytic, and Sensing Properties

Скіба

Vorobyova

Kosogina

2020

Journal of Chemistry

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The preparation of stabilized silver nanodispersions under the action of short-term plasma discharge using a polyvinyl alcohol stabilizer (polyvinyl alcohol (PVA)) was investigated. The influence of the basic technological parameters such as initial Ag+ concentration, PVA concentration, and process duration on the formation of nanoparticles and their characteristics (size and stability) were determined. The UV-Vis spectra showed the localized surface plasmon resonance at wavelengths of 400–420 nm. The SEM images showed that the shape of Ag NPs is spherical with an average particle size up to 30 nm. Ag NPs were used as a catalyst for the reduction of 4-nitrophenol (4-NP). The effect of the concentration of PNP and catalyst dosage on the value of apparent rate constant (kapp) for catalytic reduction of 4-NP in the presence of Ag NPs was investigated by means of UV-Vis spectrophotometry. The antimicrobial activity of Ag nanoparticles was investigated against yeast and Escherichia coli. The colorimetric sensor studies of plasma synthesized Ag NPs showed selective sensing of the potentially hazardous Hg2+ ion in water.

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“Green” synthesis of nanoparticles of precious metals: antimicrobial and catalytic properties

Cited by 18 publications

References 33 publications

Synthesis of Silver Nanoparticles Using Orange Peel Extract Prepared by Plasmochemical Extraction Method and Degradation of Methylene Blue under Solar Irradiation

Synthesis of Silver Nanoparticles Using Orange Peel Extract Prepared by Plasmochemical Extraction Method and Degradation of Methylene Blue under Solar Irradiation

Techno-Economic Feasibility for Water Purification from Copper Ions

Preparation of Silver Nanoparticles in a Plasma-Liquid System in the Presence of PVA: Antimicrobial, Catalytic, and Sensing Properties

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