Nanotechnologies in Russia最新文献_第9页

Nanostructured Coatings to Extend the Component Lifetime in Electrochemical Devices Based on Proton Exchange Membrane 用纳米结构涂层延长基于质子交换膜的电化学器件的元件寿命

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Nanotechnologies in Russia Pub Date : 2024-03-23 DOI: 10.1134/S2635167624600147

O. K. Alekseeva, N. A. Ivanova, V. V. Tishkin, M. V. Sinyakov, Yu. S. Pak, V. N. Fateev

{"title":"Nanostructured Coatings to Extend the Component Lifetime in Electrochemical Devices Based on Proton Exchange Membrane","authors":"O. K. Alekseeva, N. A. Ivanova, V. V. Tishkin, M. V. Sinyakov, Yu. S. Pak, V. N. Fateev","doi":"10.1134/S2635167624600147","DOIUrl":"10.1134/S2635167624600147","url":null,"abstract":"Increasing the service life of electrochemical devices is an important task, the solution of which will ensure their competitiveness and commercial attractiveness. One of the methods of protecting device elements from corrosion is the application of coatings of various compositions. Various methods are used, both chemical and physical. Recently, plasma methods, especially magnetron sputtering, have attracted increasing attention. Control of the plasma parameters allows the deposition of crystalline and amorphous coatings and films of different thicknesses (even very thin ones) having the required composition, structure, stoichiometry, density, and porosity. A detailed description and analysis of nanometer coatings and island films of noble metals (Pt, Au, Ir, Pd), which are traditionally used for protective coatings, is presented. We also describe promising nanostructured coatings from carbides and nitrides of transition metals of Groups IV–VI (Ti, Zr, V, Nb, Ta, Mo, W) and carbon-based nanostructured films (amorphous carbon, diamond-like, graphite). They are synthesized under various modes and conditions of magnetron sputtering using plasma- and heat-treatment methods. Tests under conditions close to real ones show their high efficiency in extending the service life of devices. The magnetron-sputtering method is a promising technology with a wide range of applications for coating electrochemical devices, which is confirmed by the references. The optimization of application modes and conditions will make it possible to achieve the greater efficiency and stability of nanostructured coatings.","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"18 2 supplement","pages":"S225 - S239"},"PeriodicalIF":0.8,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Doping on the Magnetic and Sorption Properties of Cobalt-Ferrite Nanoparticles 掺杂对钴铁氧体纳米粒子磁性和吸附特性的影响

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Nanotechnologies in Russia Pub Date : 2024-03-21 DOI: 10.1134/S2635167623600979

S. E. Aga-Tagieva, A. S. Omelyanchik, V. D. Salnikov, K. E. Magomedov, V. V. Rodionova, E. V. Levada

{"title":"Effect of Doping on the Magnetic and Sorption Properties of Cobalt-Ferrite Nanoparticles","authors":"S. E. Aga-Tagieva, A. S. Omelyanchik, V. D. Salnikov, K. E. Magomedov, V. V. Rodionova, E. V. Levada","doi":"10.1134/S2635167623600979","DOIUrl":"10.1134/S2635167623600979","url":null,"abstract":"<div>The use of magnetic nanoparticles as sorbents for wastewater treatment in various industries can improve the efficiency of this process and reduce the impact of humans on the environment. Therefore, the development of a cost-effective method for the preparation of magnetic nanoparticles with optimal physical–chemical properties, especially high saturation magnetization, is a crucial task in current research. In this study, we use the sol–gel-citrate self-combustion method to synthesize a series of spinel ferrite magnetic nanoparticles with different chemical compositions. A set of cobalt-ferrite nanoparticles with the partial substitution of cobalt by zinc and manganese and iron by aluminum is obtained. Among the investigated samples, the zinc-doped cobalt-ferrite nanoparticles show the highest saturation magnetization of 88 A m2/kg at room temperature. Surface modification of the synthesized materials with polyethylene glycol and sodium dodecyl sulphate can improve their colloidal stability and as a consequence increase their sorption capacity.</div>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"18 1 supplement","pages":"S69 - S75"},"PeriodicalIF":0.8,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140884050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorption of Copper Ions on the Surface of Multilayer Ti3C2Tx MXenes with Mixed Functionalization 混合官能化多层 Ti3C2Tx MXenes 表面对铜离子的吸附

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Nanotechnologies in Russia Pub Date : 2024-03-21 DOI: 10.1134/S2635167623600955

K. V. Sobolev, K. E. Magomedov, N. R. Shilov, V. V. Rodionova, A. S. Omelyanchik

{"title":"Adsorption of Copper Ions on the Surface of Multilayer Ti3C2Tx MXenes with Mixed Functionalization","authors":"K. V. Sobolev, K. E. Magomedov, N. R. Shilov, V. V. Rodionova, A. S. Omelyanchik","doi":"10.1134/S2635167623600955","DOIUrl":"10.1134/S2635167623600955","url":null,"abstract":"<div>Nowadays a new class of two-dimensional materials, MXenes, is attracting considerable attention as nanoadsorbents for the removal of heavy-metal ions from water. Pollutants such as copper and other heavy metals possess a negative impact on human health and the quality of natural ecosystems when their concentration exceeds an acceptable limit, which makes it urgent to develop cheap and effective methods to reduce the concentration of such pollutants. In this work we study the adsorptive properties of Ti3C2Tx MXenes with mixed functionalization by –O, –F, and –OH surface groups in relation to copper Cu(II) ions. Herein, multilayer MXene particles are investigated, since their yield is much greater than that of single-layer particles when using standard synthesis methods, and the experimental results are compared with previously published data for single-layer MXenes. It is established that, at low concentrations (below 50 mg/L), multilayer Ti3C2Tx MXenes demonstrate a comparable adsorption capacity of ~102 mg/g which makes it possible to use them for practical applications.</div>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"18 1 supplement","pages":"S84 - S89"},"PeriodicalIF":0.8,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140884126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of Multicomponent Carbides by the Vacuum-Free Electric-Arc Method 用无真空电弧法合成多组分碳化物

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Nanotechnologies in Russia Pub Date : 2024-03-21 DOI: 10.1134/S2635167623600694

A. A. Gumovskaya, Yu. Z. Vasilyeva, A. Ya. Pak, G. I. Mamontov

引用次数: 0

On the Sol-Gel Synthesis of Zinc-Oxide Semiconductor Powder for Varistor Structures 论变阻器结构用氧化锌半导体粉末的溶胶-凝胶合成

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Nanotechnologies in Russia Pub Date : 2024-03-21 DOI: 10.1134/S2635167623600748

I. A. Filippov, I. A. Pronin, A. S. Kitaev

引用次数: 0

Low-Pressure Thermal Sensor Based on Porous Anodic Aluminum Oxide 基于多孔阳极氧化铝的低压热传感器

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Nanotechnologies in Russia Pub Date : 2024-03-21 DOI: 10.1134/S263516762360116X

A. N. Belov, A. I. Gulidova, G. N. Pestov, A. V. Solnyshkin, O. A. Spitsyn

引用次数: 0

Computational and Experimental Study of the Mechanical Properties of Porous Particles Based on Cellulose Diacetate 基于二醋酸纤维素的多孔颗粒力学性能的计算与实验研究

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Nanotechnologies in Russia Pub Date : 2024-03-21 DOI: 10.1134/S2635167623600785

O. V. Nikulenkova, A. E. Krupnin, Yu. D. Zagoskin, S. N. Malakhov, N. M. Kuznetsov, S. N. Chvalun

引用次数: 0

Synthesis, Structure, and Thermoelectric Properties of Holmium-Doped Nanomaterials Based on Bismuth Telluride 基于碲化铋的掺钬纳米材料的合成、结构和热电特性

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Nanotechnologies in Russia Pub Date : 2024-03-21 DOI: 10.1134/S2635167623600980

M. N. Yapryntsev, O. N. Ivanov

{"title":"Synthesis, Structure, and Thermoelectric Properties of Holmium-Doped Nanomaterials Based on Bismuth Telluride","authors":"M. N. Yapryntsev, O. N. Ivanov","doi":"10.1134/S2635167623600980","DOIUrl":"10.1134/S2635167623600980","url":null,"abstract":"Powdered thermoelectric materials Bi2–xHoxTe2.7Se0.3 (x = 0, 0.001, 0.0025, 0.005, 0.01, and 0.02) are obtained by the method of solvothermal synthesis. The possibility of obtaining nanomaterials based on holmium-doped bismuth telluride is shown. The influence of the concentration of holmium on the parameters of the crystal lattice, morphology and average size of the synthesized particles are studied. Bulk materials Bi2–xHoxTe2.7Se0.3 are obtained by spark plasma sintering. All obtained samples are textured, the crystallographic axis of the texture (0 0 l) is directed parallel to the direction of the application of pressure during compaction. Development of the texture is confirmed by scanning electron microscopy and X-ray diffraction (XRD) analysis. The grains in the textured samples form an ordered lamellar structure, and the lamellar sheets lie in the plane perpendicular to the direction of pressing. An increase in the concentration of holmium leads to an increase in the degree of texturing. The thermoelectric properties of the bulk materials Bi2–xHoxTe2.7Se0.3 are also obtained","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"18 1 supplement","pages":"S101 - S109"},"PeriodicalIF":0.8,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140203312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Fabrication of Niobium-Carbide Powders by the Reaction of Niobium with Acetone 通过铌与丙酮的反应制备碳化铌粉末

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Nanotechnologies in Russia Pub Date : 2024-03-21 DOI: 10.1134/S2635167623600876

V. N. Kolosov, M. N. Miroshnichenko

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In Situ Study of the Influence of Degradation of Different Types of Polymer Matriсes on Their Mechanical Properties inside Sem 不同类型聚合物材料降解对其半成品机械性能影响的现场研究

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Nanotechnologies in Russia Pub Date : 2024-03-21 DOI: 10.1134/S2635167623601158

T. D. Patsaev, C. G. Antipova, A. M. Azieva, D. A. Kirillova, T. E. Grigoriev, R. V. Sharikov, N. A. Sharikova, D. A. Volkov, E. V. Yastremsky, R. A. Kamyshinsky, A. L. Vasiliev

引用次数: 0