Химические науки список научных статей
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Ultrasonic-assisted hydrothermal synthesis of nanoscale double ceric phosphates
The combination of ultrasonic exposure on ceric phosphate gels with subsequent hydrothermal-microwave treatment resulted in the formation of nanoscale NH4Ce2(PO4)3 or KCe2(PO4)3 phases. The sun protection factor (SPF) and protection factor against UV-A radiation (UVAPF) values for double ceric...
2024 / Taisiya O. Kozlova, Ekaterina D. Sheichenko, Darya N. Vasilyeva, Daniil A. Kozlov, Irina V. Kolesnik, Ilya V. Tronev, Maria A. Teplonogova, Alexander E. Baranchikov, Vladimir K. IvanovВАКESCI
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Synthesis of magnesium ferrite by combustion of glycine-nitrate gel: the influence of reagents on the gel-precursor and the microstructure of nanopowders
In this study, the influence of initial reagents on the phase composition and morphology of magnesium ferrite obtained by combustion of glycine-nitrate gel was investigated. The local environment of iron ions in the gel-precursor was studied in detail using FT-IR, XANESand EXAFSspectroscopy. It has ...
2024 / Maria N. Smirnova, Galina E. Nikiforova, Olga N. Kondrat’evaВАКESCI -
Structural, magnetic and electrochemical studies on ZnxMg1−xFe2O4 nanoparticles prepared via solution combustion method
Zinc-manganese ferrite nanoparticles, denoted as ZnxMg1−xFe2O4 where x ranges from 0 to 1, were synthesized via solution combustion employing glycine as the organic fuel at a stoichiometric redox ratio. The resultant compositions underwent comprehensive characterization utilizing scanning electron...
2024 / Kirill D. Martinson, Alexander A. Murashkin, Artem A. Lobinsky, Danil D. Maltsev, Kezhen Qi, Jiaguo Yu, Oksana V. Almjasheva, Vadim I. PopkovВАКESCI -
Pyrochlore phase in the Bi2O3–Fe2O3–WO3–(H2O) system: its stability field in the low-temperature region of the phase diagram and thermal stability
The concentration stability field localization of the pyrochlore-structured compounds of variable composition formed in the Bi2O3–Fe2O3–WO3 system under hydrothermal conditions at a temperature of T = 200 ºC and a pressure of P = 7 MPa was determined. It was found that the pyrochlore-structured...
2024 / Makariy S. Lomakin, Olga V. Proskurina, Aleksandr A. Levin, Vladimir N. NevedomskiyВАКESCI -
Nanocomposites of aromatic poly(amide-imide) with nanotubular Mg-Fe hydrosilicate
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...
2024 / Svetlana V. Kononova, Galina K. Lebedeva, Valery S. Kozlov, Eleonora N. Korytkova, Tatyana P. Maslennikova, Elena V. Kruchinina, Elena N. Vlasova, Natalia N. Saprykina, Galina N. Gubanova, Milana E. Vylegzhanina, Vasiliy T. LebedevВАКESCI -
Green approach to production of porous char adsorbents via oxidative carbonization in fluidized catalyst bed
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...
2024 / Petr M. Yeletsky, Nikolay A. Yazykov, Yury V. Dubinin, Maksim M. Borodaevskiy, Svetlana A. Selishcheva, Vadim A. YakovlevВАКESCI -
The role of the reaction medium pH in the formation of nanocrystalline phases in the Bi2O3–P2O5–H2O system
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,...
2024 / Dmitry P. Elovikov, Alena A. OsmininaВАКESCI -
Magnetic and photocatalytic properties of BiFeO3 nanoparticles formed during the heat treatment of hydroxides coprecipitated in a microreactor with intense swirling flows
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:...
2024 / Olga V. Proskurina, Ksenia I. Babich, Sofia M. Tikhanova, Kirill D. Martinson, Vladimir N. Nevedomskiy, Valentin G. Semenov, Rufat Sh. Abiev, Victor V. GusarovВАКESCI -
Formation of chrysotile nanotubes with titania in the internal channel
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...
2024 / Elmira N. Gatina, Tatiana P. MaslennikovaВАКESCI -
Copper-modified g-C3N4/TiO2 nanostructured photocatalysts for H2 evolution from glucose aqueous solution
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 ...
2024 / Sofiya N. Kharina, Anna Yu. Kurenkova, Andrey A. Saraev, Evgeny Yu. Gerasimov, Ekaterina A. KozlovaВАКESCI -
The effect of layered silicates on the morphological, rheological and mechanical properties of PA and PP blends
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...
2024 / Qodirbek Nuridin Ugli Berdinazarov, Elshod Olmosovich Khakberdiev, Nigmat Rustamovich AshurovВАКESCI -
Investigation of sensing performance of silicene nanoribbon towards methanol and ethanol molecules: A computational study
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...
2024 / Shazia Showket, Khurshed A. Shah, Ghulam Nabi Dar, Muzaffar Ali AndrabiВАКESCI -
Colloidal chemical properties of the sol V2O5 · nH2O
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...
2024 / Hein Myat Lwin, Oksana V. YarovayaВАКESCI -
Kinetic of colloidal-chemical transformations during the decomposition of ammonia complexes of Zn(II) in alkaline solutions
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...
2024 / Maria A. Maksimova, Evgeny V. Polyakov, Ilya V. Volkov, Aleksandr P. Tyutyunnik, Alexey A. IoshinВАКESCI -
Composite sorbent based on Fe3O4 with Fe(N2H4)xCly for the removal of Chromium(VI) from wastewater
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...
2024 / Denis P. Ordinartsev, Nadezhda V. Pechishcheva, Svetlana Kh. Estemirova, Angelina V. Kim, Evgenii V. Sterkhov, Sofia A. Petrova, Galina A. ShilenkoВАКESCI -
Phase formation of nanosized InGaZnO4 obtained by the sol-gel method with different chelating agents
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...
2024 / Gleb M. Zirnik, Alexander S. Chernukha, Daniil A. Uchaev, Ibrohimi A. Solizoda, Svetlana A. Gudkova, Nadezhda S. Nekorysnova, Denis A. VinnikВАКESCI -
Formation of ultra- and nanodispersed “core-shell” structures Ti0.8Mo0.2C0.5N0.5–Ni– Mo in the process of plasma-chemical synthesis of a mechanical mixture of titanium carbonitride with metallic nickel and molybdenum
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 ...
2024 / Yuliya A. Avdeeva, Irina V. Luzhkova, Aidar M. Murzakaev, Alexey N. ErmakovВАКESCI -
Study of photocatalytic activity in two light ranges of Sr2Mn0.4Ti0.6O4 oxide with the K2NiF4-type structure
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...
2024 / Tatyana I. Chupakhina, Olga I. Gyrdasova, Anastasya M. Uporova, Larisa Y. Buldakova, Mikhail Y. Yanchenko, Dzhavid V. Mamedov, Yulia A. Deeva, Inna V. BaklanovaВАКESCI -
The control of by-product formation rates in photocatalytic hydrogen evolution reaction from organic substances over Pt/g–C3N4
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 ...
2024 / Ksenia O. Potapenko, Egor E. Aydakov, Evgeny Y. Gerasimov, Ekaterina A. KozlovaВАКESCI -
Химические сенсоры на основе халькогенидных пленок ZnI2-PbI2-As2Se3 для определения содержания цинка в водных растворах
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...
2024 / Байдаков Дмитрий Леонидович, Михайлова Нинель Вадимовна, Шелоумов Андрей Валентинович, Виграненко Юрий ТрофимовичВАКAGRISRSCI
