Abstract In this paper, the preparation of calcium oxide (CaO) nanoparticles (NPs) is reported by a precipitation method, using CaCl 2 and NaOH as starting raw materials. The produced NPs were characterized for chemical composition, phase particle size distribution, morphological features, specific surface area, crystallite sizes. It shown that calcination Ca(OH) in vacuum takes place faster/at lower temperature compared to air due higher entropy gaseous product calcination. also when these...

Abstract A remarkable number of scientific papers are available in the literature about bulk amorphous alloys and metallic glasses. Today, DSC is an essential tool for research development, course quality assurance. In many cases, users seek to examine determination only one or two properties, although much more information can be obtained from measurements. The involved structural relaxation, Curie temperature, glass crystallization, phase separation, nanocrystalline volume fraction,...

Carbon foams have gained significant attention due to their tuneable properties that enable a wide range of applications including catalysis, energy storage and wastewater treatment. Novel synthesis pathways novel via yielding complex, hierarchical material structure. In this work, activated carbon (ACFs) were produced from waste polyurethane elastomer templates using different pathways, one-step method. Uniquely, the exhibited complex structure contained microspheres. The ACFs synthesized...

Mineral carbonation, a process of carbon-dioxide (CO2) captured from the atmosphere or flue gases, is way to sequestrate CO2 safely and permanently. In this technology, chemically reacted with calcium, magnesium, sodium, iron-containing materials. The procedure analogous natural weathering processes, form thermodynamically stable environmentally harmless carbonate minerals. Our research was focused on simultaneous mechanical activation capture storage (CCS) Linz-Donawitz steel slag...

Copper ferrite nanoparticles for use as MRI contrast agents were synthesized using two different methods. A novel microwave-assisted (MW) solvothermal method was developed and compared to a conventional 12-hour synthesis (Reflux) an eco-friendlier approach. This innovative successfully produced with enhanced properties traditional materials. The nanoparticles’ morphological magnetic evaluated tested in in-vivo studies. results revealed both similarities differences between the...

A naturally derived silicate, diatomaceous earth has been endowed with magnetic properties by depositing magnetite nanoparticles on its surface. Palladium crystallites were created the resulting magnetizable catalyst support. The support provided high specific surface area porosity which ideal for binding of both particles and palladium. was successfully tested in hydrogenation benzophenone three different solvents (methanol, ethanol, isopropanol). Significant differences catalytic activity...

This article is focused on the development of geopolymer–glass foam composite, produced by encapsulation glass waste based lightweight aggregate in geopolymer matrix. The aim investigation was to encase with optimum cell size order obtain environmentally friendly concrete from materials. Physical properties (uniaxial strength and specimen density) composite were determined, while XRD, SEM FTIR measurement carried out investigate structure resulted composite. density compared neat decreased...

Abstract Poly(ethylene terephthalate) (PET) materials with different molecular weights were isothermally crystallized from melt by systematically varying the temperature and duration of treatment performed in differential scanning calorimeter (DSC). Multiple endotherm peaks observed on subsequent heating thermograms that separated each other basis their melting versus crystallization crystallinity function. By this new approach five sub-peak sets identified then comprehensively...

The aim of this study was to investigate the construction and demolition waste (CDW) fine size fraction by increasing its reactivity with mechanical activation (MA) in a stirred media mill. Systematic measurements were carried out order gain information about reactivity. Particle distribution BET specific surface area as dispersion properties. changes particle shape measured scanning electron microscopy (SEM), structural alteration investigated FTIR spectroscopy X-ray diffraction (XRD)....

The suitability of pumice, an altered volcanic rock, for the synthesis geopolymer cement has been investigated. reactivity pumice was improved by mechanical activation (MA) in a stirred media mill various rotor speeds (3 and 5 m/s) residence times (ranging from 1 to 10 min), respectively. MA resulted into increase specific surface area (SSA). effect SSA on is evident lime adsorption capacity, which increased 70.7 mg CaO/g solid material 234.7 under calorimetric peak 4 mJ 16.6 9.3 27.2 at 27...

The combination of the sonochemical activation Ni(NO3)2 and Co(NO3)2 in presence Fe(NO3)3 polyethylene glycol consecutive heat treatment formed metal hydroxides offers a cheap efficient method for preparation nickel ferrite cobalt magnetic nanoparticles, which can be successfully applied selective capture fluorescently derivatized N-glycans from human serum. XRD measurement revealed that, besides phase, oxides also form during treatment. amount simple well controlled by temperature...

This paper focuses on the investigation of co-utilization two major industrial waste materials, power station fly ash and red mud. Experimental studies were carried out to establish correlation between physical properties a geopolymer product mixture composition. The effect mechanical activation mud dosage geopolymerisation was investigated. Geopolymerisation mechanically activated has been with various proportions ranging 0–30 % by weight. compressive strength based increased until 15%...

In this study, Zr-pillared montmorillonite clays (Zr-PILCs) were synthesized using two different precursor materials: raw (CM) and sodium ion-saturated (Na-CM) at Zr/clay ratios (2.5, 5 10 mmol/g). To study the effect of Zr concentration clay pre-treatment with NaCl on pillaring, modified samples characterized in detail X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), high-resolution transmission electron microscopy (HRTEM), scanning...

Abstract The 2,4-toluenediamine (TDA) is one of the most important chemicals in polyurethane industry, produced by catalytic hydrogenation 2,4-dinitrotoluene (DNT). development novel catalysts that can be easily recovered from reaction mixture paramount importance. In our work, a NiFe 2 O 4 /N-BCNT supported magnetic catalyst was prepared modified coprecipitation method. support alone also showed activity synthesis TDA. Platinum nanoparticles were deposited on surface fast, relatively...

In this paper we highlighted the effect of clay mineralogy and influence physico-chemical factors on coagulation- dispersion processes rate pore throat bridging by clays. particular, describe different pH (acidic 2.5 alkaline 9.5) salinity (NaCl) stability particles in siliciclastic rocks their rock permeability which are often ignored reservoir engineering literature. We conducted first experiments powder (0.05-0.1 mm grain size) samples for tracking mineral reactions core plugs...

Nowadays, the use of hybrid structures and multi-component materials is gaining ground in fields environmental protection, water treatment removal organic pollutants. This study describes promising, cheap photoactive self-supported membranes as a possible solution for wastewater applications. In course this research work, photocatalytic performance titania nanowire (TiO2 NW)-based adsorption degradation methylene blue (MB) under UV irradiation was investigated. Characterization techniques...

Abstract The Triassic-Jurassic boundary (TJB) is marked by one of the five largest Phanerozoic mass extinctions. To constrain existing models for TJB events, we obtained a stratigraphically highly resolved dataset from marine section at Kendlbachgraben, Austria. topmost Triassic Kössen Formation contains low to medium-charged smectite and vermiculite as alteration products mafic-ultramafic minerals. clay minerals in mudstone are kaolinite ⩾ illite + muscovite ⨠ > chlorite. Predominant...

Abstract Mineral carbonation is a potentially attractive sequestration technology for the permanent safe disposal and immobilization of CO 2 . In this technology, chemically reacted with calcium, sodium, magnesium containing materials to form thermodynamically stable environmentally harmless minerals, usually carbonates. our research, mechanical activation red mud was carried out in order enhance its reactivity by means mechanochemical reactions (surface activation), behaviour investigated...

Toluene diamine (TDA) is a major raw material in the polyurethane industry and thus, its production highly important. TDA obtained through catalytic hydrogenation of 2,4-dinitrotoluene (2,4-DNT). In this study special catalyst has been developed by decomposition cobalt ferrite nanoparticles onto natural clay-oxide nanocomposite (bentonite) surface using microwave-assisted solvothermal method. The particles were examined TEM X-ray diffraction. palladium immobilized on bentonite crystal was...

The role of organic solvents in governing the crystallization and morphology semi-crystalline poly-l-lactide (PLLA) sheets was systematically investigated. Three different solvents; ethyl acetate (EA), o-dichlorobenzene (ODCB), nitrobenzene (NB), with a solubility parameter analogous to PLLA high capability swelling, were chosen. It has been witnessed that degree crystal depends highly on swelling evaporation rate solvent. Besides, temperature time treatment played significant polymers....