Selective and complementary antimicrobial and antiviral activity of silver, copper, and selenium nanoparticle suspensions in deep eutectic solvent.

Metallic and nonmetallic nanoparticles are bioactive compounds that exhibit broad resistance to bacteria, fungi, and even viruses. In this paper, a deep eutectic solvent (DES) based on betaine, glucose, and ethylene glycol was used to obtain suspensions of silver, copper, and selenium nanoparticles. Depending on the nanoparticle precursor used, Ag, Cu, and Se nanoparticles (NPs) with an average particle size of 50-100 nm were prepared, and the properties of the products were confirmed by the STEM, XPS, DLS, and UV-VIS methods.

and Studies of Titanium Dioxide Nanoparticles with Galactose Coating as a Prospective Drug Carrier.

In today's medicine, progress often depends on new products with special qualities. Nanotechnology focuses on the creation of materials tailored to fulfill specific therapeutic requirements. This study aims to elucidate the potential of nanoparticles, particularly titanium dioxide nanoparticles, as carriers for pharmaceutical agents.

Development of Nanozymatic Characteristics in Metal-Doped Oxide Nanomaterials.

Nanozymes are nanoscale materials that exhibit enzymatic-like activity, combining the benefits of nanomaterials with biocatalytic effects. The addition of metals to nanomaterials can enhance their nanozyme activity by mimicking the active sites of enzymes, providing structural support and promoting redox activity. In this study, nanostructured oxide and silicate-phosphate nanomaterials with varying manganese and copper additions were characterized.

Preparation and application of SiO-FeO and SiO-FeO-Fe for soot oxidation: A step toward decarbonization by reducing soot particle emissions.

The article presents a method for obtaining catalytic systems: SiO-FeO, SiO-FeO-Fe and verification of their catalytic properties in the oxidation process of technical soot N550. The process of immobilization of Fe ions on microsilica-SiO was investigated in the batch system (equilibrium, kinetics, thermodynamics). The process was aimed at obtaining a system with a developed surface and using less iron while maintaining the same catalysis active surface.

Assessment of the Environmental Impact of Solid Oil Materials Based on Pyrolysis Oil.

One method of managing used car tires is decomposition by thermochemical conversion methods. By conducting the process at temperatures of 450-750 °C, three fractions are obtained from tires: oil, gas, and solid. The liquid product of the pyrolysis of used car tires is pyrolysis oil, which consists of aromatic, polyaromatic, and aliphatic hydrocarbons.

Fluorescence of D-Glucose-Derived Carbon Dots: Effect of Process Parameters.

The aim of this study was to synthesize highly fluorescent carbon dots (CDs) from glucose using a microwave hydrothermal method. It explored the impact of glucose concentration, process time, molar ratio of KHPO to glucose, and homogenization time on the resulting CDs, employing a fractional plan 3 with four independent parameters for twenty-seven synthesis. Results showed that longer process times at 200°C increased the fluorescence intensity of the CDs.

Inorganic Nanomaterials Used in Anti-Cancer Therapies:Further Developments.

In this article, we provide an overview of the progress of scientists working to improve the quality of life of cancer patients. Among the known methods, cancer treatment methods focusing on the synergistic action of nanoparticles and nanocomposites have been proposed and described. The application of composite systems will allow precise delivery of therapeutic agents to cancer cells without systemic toxicity.

Nanohybrids of oxides nanoparticles-chitosan and their antimicrobial properties.

Growing international problem with pathogens acquiring resistance to antibiotics is the reason for the search for bactericidal substances against which microorganisms cannot become resistant. The aim of this study was to synthesize inorganic-organic nanohybrids and obtain materials with antimicrobial effects. Chitosan (CS) was deposited on nanocomposite carriers such as calcium oxide with titanium dioxide (CaO-TiO), magnesium oxide with titanium dioxide (MgO-TiO) and copper(II) oxide with titanium dioxide (CuO-TiO).

Synergistic effect of sorption and photocatalysis on the degree of dye removal in single and multicomponent systems on ZnO-SnO.

The paper presents the photodegradation process of one-, two- and three-component dye mixtures by ZnO-SnO nanoparticles. After 60 min of running the processes, the dye removal efficiencies of 76.44, 72.

Metal and bimetallic nanoparticles: Flow synthesis, bioactivity and toxicity.

Hypothesis: Metal nanoparticles are used as additives in commercial products due to their antimicrobial properties. Apart from their high biocidal activity, it is widely observed that silver nanoparticles are toxic. Simultaneously, copper nanoparticles show fungicidal properties, but with limited effectiveness.

Preparation and of PVA-based compositions with embedded silver, copper and zinc oxide nanoparticles and assessment of their antibacterial properties.

A series of poly(vinyl alcohol) (PVA) based liquid compositions with addition of zinc oxide, silver and copper nanoparticles has been prepared. The compositions also contained other consistency-forming organic components. The physico-chemical properties of the products have been determined.

Optimisation of the co-combustion of meat-bone meal and sewage sludge in terms of the quality produced ashes used as substitute of phosphorites.

To obtain a high-quality phosphorus raw material comparable in quality to the best phosphorites used in the fertiliser industry, an analysis was carried out to determine the optimal mass proportions of a meat-bone meal and sewage sludge mixture to be used in a co-combustion process. The ashes obtained contained hydroxyapatite that could be considered a high-quality substitute for phosphorites, with an average PO content of 33.5%.

Synthesis and antimicrobial properties of CaCO-nAg and nAg-CaCO nanocomposites.

The nanocomposites of nAg-CaCO and CaCO-nAg with different mass content of silver nanoparticles were obtained in a two-stage continuous microwave process. The nanocomposites were characterized by XRD, TEM, UV-vis, and FTIR spectroscopy. The effects of microwave radiation, silver nanoparticles content in the composite and the molar ratio of tannic acid to silver on the size of salt crystallites were studied.

Silver nanoparticles based on blackcurrant extract show potent anti-inflammatory effect in vitro and in DSS-induced colitis in mice.

Silver nanoparticles have been used in a range of applications and although they are already employed in medicine, there are new, promising possibilities for their utilization. We investigated the potential of silver nanoparticles obtained with the use of blackcurrant extract in vitro in the LPS-stimulated RAW264.7 macrophages and in vivo in the murine DSS-induced colitis model.

Sorption behavior of Arachis hypogaea shells against Ag ions and assessment of antimicrobial properties of the product.

The paper presents sorption behavior of Arachis hypogaea shells towards silver ions and possibility of their use as antimicrobial product. During the modification process of the natural sorbent, equilibrium tests were carried out. Moreover, the possibility of obtaining biocomposite Arachis hypogaea shells/nAg has been determined, and its antimicrobial properties have been evaluated.

Analysis of the physicochemical properties of antimicrobial compositions with zinc oxide nanoparticles.

In this study, an antimicrobial composition based on polyvinyl alcohol (PVA) and zinc oxide (ZnO) was developed. The aim of the work was to obtain a film-forming product for antimicrobial treatment of surfaces. To improve the physical, mechanical, and film-forming properties of the compositions, three natural stabilizing agents were added to the formulation: gelatine, guar gum and hydroxyethyl cellulose.

Obtaining of oil blocks as a way to manage hazardous asbestos.

In the second half of the 20th century, asbestos extraction was up to 4 Mt/year. Due to its high strength and insulation properties, this mineral was used as an additive in building materials. Over time these materials were destroyed by the process of weathering and leaching.

Analysis of the Exposure of Organisms to the Action of Nanomaterials.

The rapid development of the production of materials containing metal nanoparticles and metal oxides is a potential risk to the environment. The degree of exposure of organisms to nanoparticles increases from year to year, and its effects are not fully known. This is due to the fact that the range of nanoparticle interactions on cells, tissues and the environment requires careful analysis.

Methods for Reducing the Toxicity of Metal and Metal Oxide NPs as Biomedicine.

The rapid development of medicine has forced equally rapid progress in the field of pharmaceuticals. In connection with the expensive and time-consuming process of finding new drugs, great emphasis is put on the design and use of metal and metal oxides nanoparticles in nanomedicine. The main focus is on comprehensive presentation of both physicochemical properties and the possibilities of using, in particular, silver (Ag) and gold (Au) nanoparticles, as well as zinc oxide (ZnO) and titanium oxide (TiO) nanoparticles as drug carriers and in the treatment of cancer.

Safety of the application of nanosilver and nanogold in topical cosmetic preparations.

The safety of the use of cosmetic preparations with silver or gold nanoparticles was assessed. This study describes the methodology and results of research involving the generation of suspensions of silver and gold nanoparticles and creams with added silver or gold at concentrations of 20, 65, 110, 155, and 200 mg/kg. The silver nanoparticles ranged from 8 to 140 nm, and the gold nanoparticles, measured 13-99 nm.

Studies on CWL with glycerol for combustion process.

Findings of more efficient energy recovery methods are focused on composite fuels consisting of coal, water, and waste materials. The use of such slurry fuels has enormous environmental benefits due to the potential for waste utilization and low emissions of harmful oxides to the atmosphere during the combustion process. In this study, we report the effect of waste glycerol on the rheological properties of coal-water fuel (CWS).

Statistical Analysis of Optimal Ultrasound Emulsification Parameters in Thistle-Oil Nanoemulsions.

Thistle oil (INCI: seed oil) is known as an anti-oxidant, moisturizing and skin regenerating cosmetic raw material. Nanoemulsions are a new form of cosmetic product showing very good user properties (ease of spreading over the skin with no greasy feeling). Moreover, due to their structure, they can also transport both hydrophilic and hydrophobic active substances to the skin.

Synthesis and evaluation of anti-inflammatory properties of silver nanoparticle suspensions in experimental colitis in mice.

The aim of our study was to investigate the effect of newly developed silver nanoparticle aqueous suspensions NanoAg1 and NanoAg2 in the mouse models mimicking ulcerative colitis and Crohn's disease. NanoAg1 and NanoAg2 were synthesized in aqueous medium with the involvement of tannic acid. To elucidate their anti-inflammatory activity, semi-chronic mouse models of inflammation induced by dextrane sulfate sodium addition to drinking water and intracolonic (i.

Effect of Process Parameters on the Size and Shape of Nano- and Micrometric Zinc Oxide.

The paper presents a method of obtaining zinc oxide nano- and microparticles. In these studies microwave reactor and laboratory pressure reactor were used. Since microwave radiation accelerates proceeding of reactions, this way was found to be an effective method in the process of obtaining nanocrystallines of zinc oxide.

Nanosilver Biocidal Properties and Their Application in Disinfection of Hatchers in Poultry Processing Plants.

The aim of this study was to use aqueous suspensions of silver nanoparticles with a wide spectrum of particle sizes, variable morphology, high stability, and appropriate physicochemical properties to examine their bactericidal and fungicidal properties against microorganisms present in poultry processing plants. At the same time, the particles were tested for preventing the production of odorogenous pollutants during incubation and thereby reducing the emission of harmful gases from such types of facilities. The results show that the use of nanosilver preparations in order to disinfect eggs and hatchers reduced microbiological contamination.