Abstract Simultaneously hard and tough nitride ceramics open new venues for a variety of advanced applications. To produce such materials, attention is focused on the development high-entropy ceramics, containing four or more metallic components distributed homogeneously in sublattice. While fabrication bulk carbides borides well established, nitrides have only been produced as thin films. Herein, we report newel three-step process to fabricate nitrides. The phase was obtained by exothermic...

Abstract The control of atmosphere content and concentration specific gases are important tasks in many industrial processes, agriculture, environmental medical applications. Thus there is a high demand to develop new advanced materials with enhanced gas sensing characteristics including selectivity. Herein we report the result study on synthesis, characterization, investigation properties In 2 O 3 –graphene–Cu composite nanomaterials for elements single-electrode semiconductor sensors....

Abstract Aluminum matrix composites (AMCs), incorporating Zirconium Nitride (ZrN) as reinforcing additives, demonstrate immense promise for applications in aerospace, automotive, and power generation due to their unique combination of low density, superior mechanical properties, excellent thermal/electrical conductivity. This study explores the influence ZrN reinforcement on microstructure properties AlSi10Mg metal-matrix composites. Utilizing high-energy ball milling (HEBM) spark-plasma...

In this work, the multiferroic bismuth ferrite materials Bi0.9RE0.1FeO3 doped by rare-earth (RE = La, Eu, and Er) elements were obtained solution combustion synthesis. Structure, electrical, magnetic properties of prepared samples investigated X-ray photoelectron spectroscopy, Mössbauer electrical hysteresis measurement, broadband dielectric SQUID magnetometry. All nanomaterials are characterized spontaneous polarization, which confirmed their ferroelectric properties. Investigation at 300.0...

Medium- and high-entropy carbides (MECs HECs) have a wide range of advanced applications and, in many cases, outperform monocarbides. However, the behavior, oxidation mechanisms, factors defining resistance some popular HECs at high temperatures not been studied detail yet. In this study, behavior MEC including (Ta,Ti,Nb,Zr)C, (Ta,Ti,Nb,Zr,Mo)C, (Ta,Ti,Nb,Zr,Hf)C, (Ta,Ti,Nb,Zr,W)C was investigated under both non-isothermal isothermal conditions up to 1200 °C, possible path described. It...

Pure copper nanoparticles have previously been successfully produced by different combustion methods, but most of them require the use an inert atmosphere (N2, Ar) during synthesis process or usage addition post reducing metal oxides. In this article, novel modification solution technique for one-step metallic Cu preparation was developed. The main unique feature our approach is microwave-assisted foam preparation. Also, effect types fuels (urea, citric acid, glycine, and...

In this paper, we report a new modified solution combustion synthesis technique for one-step production of metallic Co nanoparticles. The main unique feature our approach is the use microwave-assisted foam preparation. Also, effect different types fuels (urea, citric acid, glycine, and hexamethylenetetramine) on process characteristics resultant solid products were investigated. It was shown that combination hexamethylenetetramine as fuel allows us to produce nanoparticles with broad size...

The fine bimetallic Cu-Ni integrated nanoparticles were obtained by the modified solution combustion synthesis in air using glycine as a fuel. synthesized studied XRD analysis single- and two-phase approaches for Rietveld refinement simulation, scanning TEM–EDX spectroscopy HR TEM technics. data nanoparticles' characteristics showed close integration of Cu Ni crystalline structures, which tend to form alloy. process formation was computer simulated Monte Carlo method temperature range from...

Abstract Graphene and its analogs in combination with metal nanopowders are among the most promising catalysts for various industry valuable processes. The newly obtained solution combustion synthesized graphene–Cu graphene–CuNi nanocomposites were examined heterogeneous catalysis of thermal activated CO oxidation photoactivated degradation acid telon blue direct dyes. characterized by a closely connected graphene-metal structure number graphene layers from 1 to 3 fine grains sizes 31 nm...

Solution combustion synthesis approach with hexamethylenetetramine/citric acid as mixed fuel was used for the of bimetallic single-phase nanomaterials in CoCu, CoNi, CoFe, and FeNi systems air. All obtained are characterized by fine crystallinity crystallites sizes from 15 nm to 41 nm. The study shows using allows obtaining CoNi CoFe phase, CoCu results split phases. Due its higher stability solutions could be industrial scale-up solution production polymetallic nanomaterials.

Groundwater is one of the cleanest natural sources drinking water available, which, at same time, often requires deironing – removal dissolved iron ions before could be used. In this paper, there are describe preparation, characterization, and properties surface-modified refractory chamotte granules, used as active components fillers for filters. For research, surface modification was made by solution combustion synthesis (SCS) approach an aqueous synthetic nitrate citric acid with different...

Pure metallic Co, Ni, and their bimetallic compositions of Co

In this study, nanocrystalline (18–28 nm) perovskite-like bismuth ferrite rare earth-doped powders (Bi 0.9 RE 0.1 FeO 3 , where = La (BLaFO), Eu (BEuFO), and Er (BErFO)) were obtained by microwave-assisted modification of solution combustion synthesis (SCS). The influence high load 3+ doping on structural, optical, electrical properties BiFeO was investigated. It found that earth along with fast phase formation quenching significantly distorts the crystal cells materials, which results in...

Graphene (G) and metal-decorated G nanocomposites are among the most promising materials for a wide variety of practical applications, and, therefore, development fast reliable methods nanocomposite synthesis is an important task. Herein we report new approach solution combustion (SCS) large-area G–metallic in air atmosphere. The G-based were obtained by SCS using copper nickel nitrates, as well their stoichiometric mixture metal source citric acid fuel carbon source. structures started on...

Increased use and production of engineered nanoparticles (NPs) lead to an elevated risk their diffuse dispersion into the aquatic environment increased concern on unknown effects induced by release ecosystem. An improved understanding environmental transformation processes NPs various surface characteristics is hence imperative for assessment management. This study presents results natural organic matter (NOM) dissolution metal oxide different solubility properties in synthetic freshwater...

SiC-based ceramics are of great interest for various advanced applications. However, its fabrication requires high-temperature treatment at ∼2000 – 2100 °С. In this study, we developed an approach based on low-temperature reactive spark plasma sintering to produce dense with superior mechanical properties. It was found that SPS temperature 1600 °C and introduction 10 15 wt% mechanically activated non-oxide Ti–Si–C additive is required manufacture a theoretical density higher than 90%....

The attention to rare earth oxide nanoparticles (NPs), including yttrium (Y2O3), has increased in many fields due their unique structural characteristics and functional properties. aim of our study was investigate the mechanisms by which bio-corona formation on Y2O3 NPs affects environmental fate toxicity. induced toxicity freshwater filter feeder Daphnia magna at particle concentrations 1 10 mg/L, regardless size. Interactions between naturally excreted biomolecules (e.g. protein, lipids,...