The study's objective was to obtain silver nanoparticles (SVAgNP and FUAgNP) using aqueous extracts of Salvia verticillata Filipendula ulmaria. optimal conditions for nanoparticle synthesis were determined obtained; then characterized UV-Vis, Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), Dynamic Light Scattering (DLS), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM/EDS). SVAgNP FUAgNP possessed a crystalline structure 48.42% 60.41%...

The aim of this research was the synthesis silver nanoparticles (SPA- and SPR-AgNPs) using aqueous extracts aerial (SPA) root (SPR) parts plant Salvia pratensis L., their characterization, reaction condition optimization, evaluation biological catalytic activity. UV-Vis spectroscopy, X-ray powder diffraction (XRPD), scanning electron microscopy with EDS analysis (SEM/EDS), dynamic light scattering (DLS) were utilized to characterize nanoparticles, while Fourier transform infrared (FTIR)...

This study was designed to evaluate the optimal conditions for eco-friendly synthesis of silver nanoparticles (AgNPs) using Lythrum salicaria L. (Lythraceae) aqueous extracts and their potential application safe use. AgNPs synthesized aerial parts (LSA-AgNPs) root extract (LSR-AgNPs) were characterized by UV-Vis spectrophotometry, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM/EDS), X-ray powder diffraction (XRPD). Dynamic light scattering (DLS) used...

The production of fruit brandies is based on distilling fermented juices. Distillation equipment usually made copper. In traditional manufacturing, it consists a boiler (batch) distiller, (pot), steam pipe, and condenser, all which are pure This study determined the corrosion parameters for copper (Cu) Cu72Zn28 (in wt%) alloy in apricot juice at room temperature. fermentation process examined this research utilized natural strains yeast bacteria, supplemented by active dry Saccharomyces...

A procedure for the formulation and characterization of a gilding electrolyte based on mercaptotriazole is described. It was found that can be synthesized in wide pH range, so solutions with different values (2, 4, 7, 9 12) have been prepared analyzed. Inductively coupled plasma atomic emission spectroscopy ultraviolet–visible were used chemical solutions. Electrochemical performed by open circuit potential measurement, cyclic voltammetry polarization measurements.

Sn-Pd electrocatalysts with a constant atomic ratio of 60 at.% Sn-40 Pd suitable for potential application in direct ethanol fuel cells were synthesized using novel two-step electrodeposition method. First, Sn was electrodeposited various forms dendrites, from spear-like and needle-like to individual fern-like dendrites network intertwined by varying the cathodic then performing at current density second step. A morphological elemental analysis performed scanning electron microscopy (SEM),...

Elemental sulfur (S8) is a corrosive compound which was found to be extremely reactive silver, causing intensive silver sulfide (Ag2S) deposition on on-load tap changer (OLTC) contacts in power transformers. A highly selective adsorbent (HSA), called Tesla'Ssorb, for the removal of S8 from mineral insulating oils prepared raw material (RM) using novel procedure. In this study, adsorption properties HSA oil were determined. RM and characterized various techniques, such as field-emission...

The electrochemical deposition of zinc/gold dendrite-free alloys was achieved from deep eutectic solvents based on a mixture choline chloride and ethylene glycol, without using any additives. Potentiostatic electrodeposition carried out at relatively low Zn overpotential different Zn(II) concentrations. Insight into the mechanism revealed by cyclic voltammetry (CV) chrono- amperometry (CA). morphology structure obtained electrodeposits were characterized scanning electron microscopy (SEM)...

This paper presents the results of Pb2+ adsorption from synthetic Pb(NO3)2 solutions, using beech sawdust and wheat straw as adsorbents. Physicochemical characterization adsorbents included specific surface area, pHpzc, SEM-EDS FTIR analysis. Adsorption kinetics isotherms, well changes in pH solution during process, were monitored analyzed. The showed that is explained by pseudosecond order kinetic model for both on described Temkin isotherm, which confirmed high values regression...

Silver fine powder with different shapes and sizes were prepared by chemical reduction characterized scanning electron microscope. In this paper was presented the method for preparation of Ag particles size smaller than 2.5 µm suitability mass-production scale. Reduction performed from nitrate solution directly vigorous stirring at room temperature three agents, without presence two dispersants. Scanning microscopy revealed preferred obtained in all experiments aim protecting agent. Larger...

Abstract The results of experimental investigation creep rate and rupture time the alloys Pt-Rh system are presented in this paper. Selected with 7–40 wt.-% Rh content were examined using a universal device for tensile testing materials at high temperatures, monitoring structure changes samples by electron microscopy. Investigations performed temperature range between 1200°C 1700°C stress 2 MPa 15 MPa.

Abstract The aim of this work was to investigate the effect temperature on thickness, surface roughness, visual appearance and morphology electrochemically deposited gold decorative coatings obtained from conventional cyanide electrolyte (AUROCIN DPB) based mercaptotriazole (Au-MT). Heating does not significantly affect thickness ( b ) (at 20 °C = 0.08 μm, at 30 0.07 μm 40 μm) and, for reason, coating processes were carried out room temperature. Temperature increase has a positive...

Development of lithium-ion batteries (LIBs) during the latest decades resulted in improved performances new integrated cathode materials and their wide applications. This rapid expansion led to intensive replacement old-fashioned, traditional increased a simultaneous accumulation both kinds at extremely hazardous electronic waste sites, which additionally an urgent need for recycling. Most importantly, this way, spent LIBs may further serve as significant source valuable metals such Li...

Abstract In this paper are presented investigation results of tensile strength and elongation selected alloys from Pt-Rh system. Samples with the content rhodium in a concentration range 7-40% (wt.) were studied. Studies performed temperature 1100-1500°C at stress 2-20 MPa. A universal device for measuring hardness was used to measure Vickers hardness. For time high temperatures, Mayes MK2 TC/10 used. It found that value increases increasing content, decreases temperature. Elongation 7% Rh,...

Abstract This work is the first to demonstrate possibilities of direct analysis corrosion film formed on Ag 43 Cu 37 Zn 20 alloy using laser desorption/ionization (LDI) a commercial matrix-assisted LDI time flight mass spectrometry (MS) instrument. In spectra measured from water solution film, ion species + , Zn(H 2 O) AgH H O(OH) 3 (high intensity), and Cu(OH)(H ZnCl(OH)(H AgCl CuCl (low intensity) were identified. The propan-2-ol contains ions 5 Cl(OH) (H 11 Cl (OH) 8 6 (OH)(H 14 . Mass...

Abstract The aim of this work was to investigate the effects current density, temperature, pH and concentration ethylhexilsulfonate additive on microhardness electrochemically deposited gold decorative coatings obtained from a conventional cyanide electrolyte complex based mercaptotriazole. Mechanically chemically prepared brass samples were first nickeled acidic electrolyte. Nickel substrate deposit, then two types electrolytes at different densities temperatures. Decorative...

Hybrid aluminum composites obtained with stir casting were investigated in this study. Aluminum alloy EN AW 6061 was reinforced particles of Al2O3 and walnut-shell ash (WSA). The weight fraction constant (5 w/%) for the ash, it (1, 2 3) w/%. morphology particle distribution examined an optical microscope scanning electron microscope. Microstructural studies showed a uniform all samples. A chemical analysis reinforcing on samples’ surfaces done using energy-dispersive spectrometer. changes...

Highly porous lignin-based microspheres, modified by magnetite nanoparticles, were used for the first time removal of selenate anions, Se(VI), from spiked and real water samples. The influence experimental conditions: concentration, adsorbent dosage contact on adsorption capacity was investigated in a batch mode. FTIR, XRD, SEM techniques to analyze structural morphological properties native exhausted adsorbent. maximum found be 69.9 mg/g Se(VI) anions at pH 6.46 simulated natural polymer...

This work presents the perspective of applying laser desorption/ionization mass spectrometry (LDI MS) for characterization anode film Ag60Cu26Zn14, Ag58.5Cu31.5Pd10, and Ag63Cu27In10 alloys (at high concentrations chloride ions in solutions). The reference LDI spectra films pure Ag Cu have been used identification product corrosion. Knowing clusters detected lead to facilitating spectrum sample reduces analysis time. MS these revealed that predominant corrosion are AgCl (from AgnCln+1−/+, n...

Dust from an electric arc furnace is formed as the main by-product of steel production process secondary iron-based raw materials. This dust has significant contents Zn and Fe, well Pb, Cd, Ca, Mg, Cr, Mn, Si, Ni, Cu, F, Cl other elements considered hazardous industrial solid waste since it contains heavy metals. In order to protect environment public health negative impact this type waste, necessary, even mandatory, carry out its treatment in accordance with legislation country where...