Персона:
Неволин, Владимир Николаевич

Организационные подразделения

Организационная единица

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.

Фамилия

Неволин

Имя

Владимир Николаевич

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Теперь показываю 1 - 10 из 24

Только метаданные
Component 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
Только метаданные
Influence of Sulfidation Conditions of WO3 Nanocrystalline Film on Photoelectrocatalytic Activity of WS2/WO3 Hybrid Structure in Production of Hydrogen
(2021) Shvets, P. V.; Maznitsyna, E. A.; Nevolin, V. N.; Fominski, D. V.; Romanov, R. I.; Rubinkovskaya, O. V.; Soloviev, A. A.; Fominski, V. Y.; Неволин, Владимир Николаевич; Фоминский, Дмитрий Вячеславович; Романов, Роман Иванович; Рубинковская, Оксана Владимировна; Соловьев, Алексей; Фоминский, Вячеслав Юрьевич
© 2021, Pleiades Publishing, Ltd.Abstract: The thermochemical treatment of tungsten trioxide (WO3) nanostructured films in hydrogen sulfide to obtain tungsten disulfide (WS2) layers in the WS2/WO3 hybrid structure is studied. The temperature and treatment time influence the structural-phase state, morphology, optical properties of a WS2/WO3/FTO photocathode (on fluorinated tin oxide (FTO) substrates), and its photoelectrocatalytic activity in the hydrogen evolution reaction in acidic solution is established. The sulfidation of WO3 nanoneedle films leads to the formation of a WS2/WO3 nanocrystalline hybrid structure under optimal conditions, which provides the separation of photogenerated carriers (electrons and holes) at the interphase boundaries (heterojunctions) necessary for the efficient photoactivated hydrogen evolution reaction according to Z scheme. The calculations of thermodynamic properties of the WS2/WO3 hybrid nanocatalyst show that synergistic effect of nanophases is possible in it to increase the catalytic activity of hydrogen evolution both on the basal planes of WS2 nanoclusters and on the surface of metal oxide nanoclusters.
Только метаданные
Comparative Characteristics of Catalytically Active MoSx Films in the Hydrogen Evolution Reaction on a MoSx/WSe2 Heterojunction Photocathode
(2024) Rubinkovskaya, O. V.; Romanov, R. I.; Fominski, D. V.; Nevolin, V. N.; Fominski, V. Y.; Рубинковская, Оксана Владимировна; Романов, Роман Иванович; Фоминский, Дмитрий Вячеславович; Неволин, Владимир Николаевич; Фоминский, Вячеслав Юрьевич
Только метаданные
Influence 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.
Только метаданные
Surface-Enhanced Raman Scattering of the Double Transition Metal Mo2TiC2–Ox MXene-Based Structures
(2025) Zavidovskiy, I. A.; Belozerova, N. M.; Syuy, A. V.; Nevolin, V. N.; Fominski, V. Y.; Неволин, Владимир Николаевич; Фоминский, Вячеслав Юрьевич
Только метаданные
Surface Physicochemical Treatment of Nickel Foam for Increasing Its Electrocatalytic Activity in Overall Water Splitting
(2020) Fominski, D. V.; Nevolin, V. N.; Romanov, R. I.; Fominski, V. Y.; Komleva, O. V.; Kartsev, P. F.; Novikov, S. M.; Фоминский, Дмитрий Вячеславович; Неволин, Владимир Николаевич; Романов, Роман Иванович; Фоминский, Вячеслав Юрьевич; Рубинковская, Оксана Владимировна; Карцев, Петр Федорович
© 2020, Pleiades Publishing, Ltd.Abstract: The possibility of using physicochemical methods for treating a nickel foam to increase its electrocatalytic activity in hydrogen and oxygen evolution reactions in an aqueous alkaline solution was studied. The modification of a 1-mm-thick sheet of the foam was carried out through its surface and included physical deposition of pulsed laser plasma for the formation of catalytic MoSx and MoSxSey films, followed by their annealing. The effect of foam pretreatment by sulfurization in H2S under varying conditions and formation of catalytic layers with different structures and compositions was studied. The best improvement in the electrocatalytic performance of the foam was exerted by thin-film coatings of molybdenum sulfide and sulfide/selenide with a nanocrystalline structure formed on the surface of a foam with a Ni3S2 underlayer. The possibility of a synergetic effect of the formed phases was analyzed by DFT calculations. For the optimum composition of the modified layers, the overvoltage of H2 evolution (for a current density of 10 mA/cm2) decreased to 155 mV, and the overvoltage of O2 evolution did not exceed 160 mV. The electrocatalytic characteristics obtained by this treatment are not inferior to those for the best modern electrocatalysts created on nickel foam by widely used methods of hydrothermal synthesis or electrodeposition.
Только метаданные
Nanostructured MoS3/WSe2 Thin-Film Photocathode for Efficient Water Splitting Under Light Illumination
(2021) Nevolin, V. N.; Romanov, R. I.; Fominski, D. V.; Rubinkovskaya, O. V.; Soloviev, A. A.; Fominski, V. Y.; Неволин, Владимир Николаевич; Романов, Роман Иванович; Фоминский, Дмитрий Вячеславович; Рубинковская, Оксана Владимировна; Соловьев, Алексей; Фоминский, Вячеслав Юрьевич
© 2021, Pleiades Publishing, Ltd.Abstract: The influence of the chemical state of a WOy thin-film precursor on formation of WSe2 nanofilms under rapid selenization on a glassy carbon substrate at 900°C is studied. A nanolayer of amorphous molybdenum sulfide (MoSx ~ 3), which has high catalytic activity in the electrochemical reaction of hydrogen evolution, is applied onto the surface of the obtained WSe2 films by pulsed laser deposition. It is shown that the composition of the WOy thin-film precursor has a significant effect on the morphology of the WSe2 nanolayers, and this characteristic largely determines the efficiency of hydrogen evolution by the MoS3/WSe2 heterostructure upon photoactivated water splitting. The most efficient hydrogen evolution is found for the MoS3/WSe2 photocathode heterostructure containing WSe2 in the form of crystal petals of ~50 nm in thickness, with these crystals oriented perpendicular to the substrate surface. A theoretical analysis of the possible effect of synergistic interaction at the MoS3/WSe2 interface on the efficiency of hydrogen evolution is carried out. Density functional theory calculations have shown that MoS3 clusters can increase the efficiency of the hydrogen evolution reaction upon contact with surface regions of WSe2 nanocrystals different in atomic packing.
Только метаданные
Comparative 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.
Только метаданные
Chemical Properties and Electronic Structure of Molybdenum Oxysulfide Films for Advanced Photoelectrocatalysts for Hydrogen Production
(2022) Nevolin, V. N.; Romanov, R. I.; Fominski, D. V.; Rubinkovskaya, O. V.; Fominski, V. Y.; Неволин, Владимир Николаевич; Романов, Роман Иванович; Фоминский, Дмитрий Вячеславович; Рубинковская, Оксана Владимировна; Фоминский, Вячеслав Юрьевич
Открытый доступ
Оптимизация режимов импульсного лазерного осаждения тонкопленочных катализаторов MOSX для эффективного выделения водорода на кремниевом фотокатоде
(2023) Фоминский, Д. В.; Романов, Р. И.; Рубинковская, О. В.; Неволин, В. Н.; Фоминский, В. Ю.; Неволин, Владимир Николаевич; Романов, Роман Иванович; Фоминский, Дмитрий Вячеславович; Фоминский, Вячеслав Юрьевич; Рубинковская, Оксана Владимировна
Исследована эффективность фото-активированного выделения водорода в кислотном растворе на катоде p-Si с нанесенной тонкой пленкой катализатора из аморфного сульфида молибдена. Установлено значительное влияние метода формирования пленки катализатора на качество фотокатода. Наибольшие фототоки обнаружены в случае нанесения каталитической пленки традиционным методом импульсного лазерного осаждения из мишени MoS2. Варьирование условий реакционного импульсного лазерного осаждения из мишени Мо в сероводороде не позволяло реализовать высокую эффективность получения водорода. Выявлены возможные причины различия функциональных характеристик созданных фотокатодов.