Персона: Фоминский, Вячеслав Юрьевич
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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- ПубликацияОткрытый доступСПОСОБ СОЗДАНИЯ ФОТОКАТОДА ДЛЯ ПОЛУЧЕНИЯ ВОДОРОДА(НИЯУ МИФИ, 2023) Соловьев, А.; Романов, Р. И.; Фоминский, В. Ю.; Фоминский, Д. В.; Грицкевич, М. Д.; Степанова, Т. В.; Степанова, Татьяна Владимировна; Фоминский, Вячеслав Юрьевич; Романов, Роман Иванович; Грицкевич, Мария Дмитриевна; Фоминский, Дмитрий Вячеславович; Соловьев, АлексейИзобретение относится к области водородной энергетики, а именно к созданию эффективных тонкопленочных фотокатодов для электрохимической, в особенности фотоактивированной реакции расщепления воды и получения водорода. Технический результат - повышение адгезионных свойств фотокаталитического слоя к подложке и коррозионной стойкости к электролиту, а также стабильности характеристик фотокатода. Способ создания фотокатода для получения водорода включает в себя размещение подложки из стеклоуглерода в вакуумной камере, создание вакуума, нагрев подложки, нанесение на подложку пленки WO3 методом импульсного лазерного осаждения путем лазерной абляции металлической вольфрамовой мишени, охлаждение подложки, напуск в вакуумную камеру серосодержащего газа, нагрев подложки до температур 300-500°C с последующим сульфидированием. 3 ил.
- ПубликацияТолько метаданныеElectrophysical and Photo-Electrocatalytic Properties of MoS2 Nanofilms(2020) Fominski, V. Y.; Nevolin, V. N.; Romanov, R. I.; Rubinkovskaya, O. V.; Fominski, D. V.; Soloviev, A. A.; Фоминский, Вячеслав Юрьевич; Неволин, Владимир Николаевич; Романов, Роман Иванович; Рубинковская, Оксана Владимировна; Фоминский, Дмитрий Вячеславович; Соловьев, Алексей© 2020, Pleiades Publishing, Ltd.Abstract: MoS2 nanofilms were created by thermochemical processing (sulfurization) of thin-film Мо and МоОу precursors in S vapor. The precursor films were created by pulsed laser deposition. The obtained molybdenum disulfide films consisted of 2H-MoS2 nanocrystals with laminar packing of basal planes oriented perpendicular to the film surface. The increase in the sulfurization temperature from 500°C to 800°C provided better quality of local packing and, as a consequence, reduction of electric resistance, higher concentration of carriers (electrons) and their mobility. The application of metal oxide precursor МоОу resulted in higher efficiency of synthesis of high quality MoS2 nanofilms. The efficiency of activation of the electrochemical processes of hydrogen production in an acidic solution was lower with crystalline MoS2 nanofilms than with amorphous MoSx films. Nanocrystalline MoS2 films, however, manifested improved photo- and electrocatalytic characteristics in activation of reactions of hydrogen and oxygen evolution in an alkaline solution.
- ПубликацияТолько метаданныеComponent Selection and Nano-Structuring of WS2/MoS2/a-C Thin-Film Coatings for Reduction of Sliding Friction in Difficult Conditions(2023) Romanov, R. I.; Fominski, D. V.; Nevolin, V. N.; Kasianenko, V. A.; Fominski, V. Y.; Романов, Роман Иванович; Фоминский, Дмитрий Вячеславович; Неволин, Владимир Николаевич; Фоминский, Вячеслав Юрьевич
- ПубликацияТолько метаданныеInfluence of the Chemical Composition and Local Atomic Packing of Nanostructured MoSx and MoSex Solid Lubricant Coatings on Their Tribological Properties under Complicated Conditions(2020) Fominski, V. Y.; Nevolin, V. N.; Fominski, D. V.; Romanov, R. I.; Gritskevich, M. D.; Фоминский, Вячеслав Юрьевич; Неволин, Владимир Николаевич; Фоминский, Дмитрий Вячеславович; Романов, Роман Иванович; Грицкевич, Мария Дмитриевна© 2020, Pleiades Publishing, Ltd.Abstract: We present the results of a comparative investigation of the friction and wear characteristics of MoSx and MoSex coatings in an oxidizing medium (argon–air mixture) at a temperature of –100°C. Thin films of these solid lubricants were manufactured by pulsed laser deposition using MoS2, MoSe2, and Mo targets in vacuum and H2S. It was established that S-containing coatings ensured a friction coefficient of ~0.09 and were much superior to S-containing coatings in respect of wear. The properties of MoSx coatings depended on the concentration of S that determined the local atomic packing in the amorphous structure of the film. The friction coefficient of MoS3 coating after running-in was half as small as that of MoS2 and amounted to 0.08.
- ПубликацияТолько метаданныеThe Effect of MoS x Nanocoatings on the Water Electrolysis Performance Using a Nickel-Foam-Based Bifunctional Catalyst(2019) Novikov, S. M.; Komleva, O. V.; Fominski, D. V.; Romanov, R. I.; Fominski, V. Y.; Esin, M. I.; Рубинковская, Оксана Владимировна; Фоминский, Дмитрий Вячеславович; Романов, Роман Иванович; Фоминский, Вячеслав Юрьевич© 2019, Pleiades Publishing, Ltd.The ability to increase the efficiency of electrochemical H2 and O2 evolution reactions in an alkaline solution using nickel-foam-based electrodes has been studied. To improve the catalytic properties of the foam, it was subjected to complex modification via sulfurizing in sulfur-containing gaseous media and the additional formation of amorphous or crystalline MoSx nanolayers. The foam was sulfidized in hydrogen sulfide or sulfur vapor at a temperature of 400°C. Amorphous MoSx films were produced via pulsed laser deposition from a MoS2 target in an H2S atmosphere. To obtain nanocrystalline catalytic MoSx layers, thin-film Mo precursors were preliminarily applied to the foam pre-sulfurized in sulfur vapor at 400°C. The deposition of precursors was carried out in vacuum at 22°C. After deposition, the foam with precursors was oxidized in air at 600°C. The modified samples were probed via scanning electron microscopy involving microanalysis and Raman spectroscopy. The effect of the precursor layer thickness on the sulfurizing efficiency and phase composition of the modified layers was established. The amorphous layer deposition was found to have a strong impact on only the O2 evolution. The crystalline layers obtained via sulfidizing of Mo-containing precursors exerted influence on both the cathodic and anodic reactions. The hydrogen overvoltage at a current density of 10 mA/cm2 was −160 mV, and the oxygen overvoltage was below 150 mV, which corresponded to the best electrocatalysts on the nickel foam after the volume modification via conventional chemical treatment (hydro- and solvothermal synthesis).
- ПубликацияТолько метаданныеComparative studies of photoactivated H2 evolution for nano-needle WO3 films with crystalline 2H-WS2 and amorphous a-MoSx co-catalysts(2021) Romanov, R. I.; Fominski, D. V.; Rubinkovskaya, O. V.; Soloviev, A. A.; Nevolin, V. N.; Fominski, V. Yu.; Романов, Роман Иванович; Фоминский, Дмитрий Вячеславович; Рубинковская, Оксана Владимировна; Соловьев, Алексей; Неволин, Владимир Николаевич; Фоминский, Вячеслав Юрьевич© 2021 Institute of Physics Publishing. All rights reserved.(Photo)electrocatalytic properties of nanostructured WO3 films used for H2 evolution reaction (HER) were modified by forming hybrid structures containing a crystalline 2H-WS2 and an amorphous a-MoSx phases. For this, respectively, thermochemical treatment of metal oxide films in H2S gas and reaction pulsed laser deposition of molybdenum in H2S were applied. The functional characteristics of the hybrid structures were studied in a three-electrode electrochemical cell in an acid solution under intermittent illumination with a Xe lamp. a-MoSx film deposition caused a more significant improvement in the HER activity of MoSx/WO3 structure compared to that of WS2/WO3 structure. However, WS2/WO3 structures were superior to MoSx/WO3 structures in the efficiency of the photoactivated HER. The factors that could influence the (photo)electrocatalytic behaviour of the created structures were analysed.
- ПубликацияТолько метаданныеFeatures of Sliding Friction on Thin-Film Mo–S–C Coatings Prepared by Pulsed Laser Deposition(2020) Novikov, S. M.; Chesnokov, A. V.; Fominski, V. Y.; Romanov, R. I.; Fominski, D. V.; Фоминский, Вячеслав Юрьевич; Романов, Роман Иванович; Фоминский, Дмитрий Вячеславович© 2020, Allerton Press, Inc.Abstract: To obtain Mo–S–C thin-film coatings on steel substrates with varying structural and chemical states, pulsed laser codeposition method was used at room temperature, including the first ever use of reactive codeposition of Mo and C in H2S. The conditions are determined for obtaining sufficiently smooth layers with optimal local packing of atoms in amorphous MoSx and diamond-like carbon nanophases, which yielded relatively high wear resistance and a low sliding friction coefficient (~0.1) in air without a long running-in phase.
- ПубликацияОткрытый доступРЕГУЛИРОВАНИЕ ПАРАМЕТРОВ ИОННОЙ БОМБАРДИРОВКИ ДЛЯ ПОЛУЧЕНИЯ ТВЕРДОСМАЗОЧНЫХ ПОКРЫТИЙ С УЛУЧШЕННЫМИ СВОЙСТВАМИ(НИЯУ МИФИ, 2015) Романов, Р. И.; Григорьев, С. Н.; Фоминский, В. Ю.; Волосова, М. А.; Фоминский, Вячеслав Юрьевич; Романов, Роман ИвановичLow-friction WSex coatings were prepared by pulsed laser deposition using two modes, i.e., the deposition under vacuum conditions and the deposition in a buffer gas (He) at a pressure of 2–10 Pa. Gas was used to change the energetic parameters of laser-induced atomic flux and to modify thus the conditions of the coatings growth. The modification of the structure and the composition of the coatings had a significant effect on their tribological behavior.
- ПубликацияТолько метаданныеStudy of the Mechanism of Photoactivated Hydrogen Evolution on a Silicon Photocathode with a-MoS x Thin-Film Catalyst(2023) Rubinkovskaya, O. V.; Nevolin, V. N.; Fominski, D. V.; Romanov, R. I.; Kartsev, P. F.; Fominski, V. Y.; Рубинковская, Оксана Владимировна; Неволин, Владимир Николаевич; Фоминский, Дмитрий Вячеславович; Романов, Роман Иванович; Карцев, Петр Федорович; Фоминский, Вячеслав Юрьевич
- ПубликацияТолько метаданныеNovel 3D-on-2D g-C3N4/AgInxSy heterojunction photocatalyst for simultaneous and stoichiometric production of H2 and H2O2 from water splitting under visible light(2025) Jiang, H.; Ye, W.; Zhen, H.; Fominskii, V.; Фоминский, Вячеслав Юрьевич