Химические науки список научных статей

Composite films based on aromatic polyamide imide with carboxyl-containing fragments in repeating units (PAI-Ac) containing hydrosilicate nanotubes (Mg,Fe)3Si2O5(OH)4 are structurally sensitive to the molecular weight of the polymer used. According to Mössbauer spectroscopy data, nanotubes...

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ESCI

A green and energy-efficient technique for production of porous carbon-mineral chars from agricultural wastes (rice husk, wheat bran) and sedimentary carbonaceous feedstocks (high-ash peat, coal) was developed. It is based on partial combustion in fluidized bed of a deep oxidation catalyst at low...

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ESCI

The work is devoted to studying the influence of pH values in an aqueous-salt medium on the formation of compounds in the Bi2O3–P2O5–H2O(OH−, H+) oxide system. It has been shown that in an acidic environment (pH = 2) at a temperature of 298 K, hexagonal BiPO4 forms, while at pH values of 8 and 12,...

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ESCI

In this work, hydroxide deposition in a microreactor with intensively swirling flows was used to obtain BiFeO3, followed by heat treatment of co-precipitated bismuth and iron hydroxides. The study of the formation of nanocrystalline bismuth orthoferrite was carried out using a set of methods:...

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ESCI

The paper studies the influence of titanium-containing compounds on the formation of hydrosilicate nanotubes under hydrothermal conditions. The possibility of titanium ions to enter the crystal structure, and of titania the nanotube channel, has been analyzed. The influence of temperature on the...

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ESCI

Two strategies for synthesis of copper-modified composite photocatalysts based on graphitic carbon nitride and titanium dioxide for hydrogen evolution reaction are presented. The first one is based on the mechanical dispersion of separately prepared g-C3N4 and commercial TiO2 (Evonik P25), modified ...

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ESCI

We study rheological, morphological and mechanical properties of polyamide-6 (PA) and polypropylene (PP) blends in the presence of layered silicates (two types of organically modified montmorillonite Cloisite30B for PA and Cloisite20A for PP). For comparison, we used maleic anhydride grafted...

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ESCI

In this work, we perform an intricate computational analysis to investigate the adsorption mechanism of human breath exhaled VOCs, namely, methanol and ethanol, along with interfering water vapour on the surface of armchair silicene nanoribbon (ASiNR) by employing density functional theory to...

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ESCI

The colloidal properties of the lyophilic dispersion system V2O5 · nH2O sol studied in this work was obtained by the thermolysis of V2O5 powder with hydrogen peroxide. The dispersion phase exists in the form of nanorods. The optimal mole ratio of V2O5 and H2O2 for synthesizing the sol is 1:30, and...

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ESCI

For the closed system (Σ): Zn2+–NH3,aq–NH3,gas, H+–OHˉ–N2,gas, experimental data on the change in the concentration of in the composition of the ammonia complex Zn(NH3)2+ 4 in solution, colloidal particles Zn(OH)2/ZnO in solution and growing film on the reactor walls are presented depending on the...

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ESCI

The paper presents a methodology for the synthesis of iron complex with hydrazine hydrate Fe(N2H4)xCly. The Fe(N2H4)xCly complex was investigated by X-ray phase analysis and scanning electron microscopy. Upon hydrolysis, the Fe(N2H4)xCly complex forms a composite sorbent, which is Fe3O4 in a shell...

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The production of nano-sized semiconductor oxide materials, such as indium-gallium-zinc oxide (IGZO), will make it possible to use it for the transistors manufacture using printing methods. The sol-gel method is one of the widely known and used methods for producing nano-sized oxide materials. As...

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ESCI

Ultradisperse and nanocrystalline powder compositions were obtained in the process of plasmachemical synthesis of a mechanical mixture of titanium carbonitride TiC0.5N0.5 with metallic nickel and molybdenum in a low-temperature nitrogen plasma (4000 – 6000 ºC), taking into account recondensation in ...

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The photocatalytic properties of single-phase sample Sr2Mn0.4Ti0.6O4 is studied as a representative of a series of Sr2MnxTi1−xO4 solid solutions (x = 0.05, 0.15, 0.25, 0.4) obtained by the SHS. The sample annealed at 1200 ºC is characterized by a uniform distribution of Sr, Ti and Mn in the...

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ESCI

The results on the photocatalytic activity of 0 – 2 wt.% Pt/g-C3N4 in the hydrogen evolution reaction under visible light (430 nm) are presented. Triethanolamine (TEOA), glycerol, glucose and cellulose were used as electron donor. During the reaction, not only the target product, hydrogen, but also ...

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ESCI

Халькогенидные стекла и пленки на основе селенидов мышьяка, содержащие иодиды металлов, имеют уникальные свойства и большое практическое применение. Они прозрачны в ИК-диапазоне спектра, имеют низкую чувствительность к примесям и высокую химическую устойчивость в агрессивных средах. Стеклообразные...

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AGRIS

RSCI

В работе показана возможность использования эвкалиптовой сульфатной целлюлозы как в виде самостоятельного волокна, так и в смеси с хвойной при создании целлюлозного композиционного материала для сбора биологических образцов. Показано влияние процесса размола эвкалиптовой целлюлозы на...

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AGRIS

RSCI

Методом Фурье ИК-спектроскопии проведено исследование серии образцов α- и β-форм кристаллической D(+)-глюкопиранозы с целью оценки возможности выявления примеси сопутствующего аномера. Показано, что в отличие от α-D(+)-глюкопиранозы, для спектра которой характерен интенсивный максимум 1009 смˉ¹, в...

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AGRIS

insektitsid, analog-dorilar, toksin, kanibalizm, shisha slindrik probirka.

Для сложных эфиров – метилацетата, этилацетата, пропилацетата, изопропилацетата, бутилацетата, втор-бутилацетата, трет-бутилацетата, пентилацетата, неопентилацетата, гексилацетата, 2-гексилацетата, 3-гексилацетата, а также циклогексилацетата для конформаций циклогексанола кресло и ванна – методом...

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