Pub Date : 2023-12-23DOI: 10.1134/s0018143923080192
H. T. Nguyen, A. S. Pyaterneva, E. I. Cheryakova, N. M. Murashova
{"title":"Microemulsions of Lecithin with Various Vegetable Oils for Medical Use","authors":"H. T. Nguyen, A. S. Pyaterneva, E. I. Cheryakova, N. M. Murashova","doi":"10.1134/s0018143923080192","DOIUrl":"https://doi.org/10.1134/s0018143923080192","url":null,"abstract":"","PeriodicalId":12893,"journal":{"name":"High Energy Chemistry","volume":"23 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-23DOI: 10.1134/s0018143923080179
N. A. Magdalinova, K. S. Novikova, M. V. Klyuev
{"title":"Hydroamination of Aliphatic Aldehydes with DL-α-Alanine","authors":"N. A. Magdalinova, K. S. Novikova, M. V. Klyuev","doi":"10.1134/s0018143923080179","DOIUrl":"https://doi.org/10.1134/s0018143923080179","url":null,"abstract":"","PeriodicalId":12893,"journal":{"name":"High Energy Chemistry","volume":"60 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-23DOI: 10.1134/s001814392308026x
M. M. Zoshchik, M. A. Safronova, S. V. Shulaev, N. M. Murashova
Abstract
The effect of inorganic salts and CuO nanoparticles on the dynamic viscosity of a lamellar liquid crystalline mesophase in the lecithin–avocado oil–tea tree oil–water system was studied using rotational viscometry in a range of shear rates from 0.01 to 1.0 s–1. It was found that the viscosity of liquid crystals increased by a factor of 1.2–6.25 upon the introduction of aqueous solutions of NaCl, CaCl2, and CuCl2 with a concentration of 0.1 mol/L or higher. The introduction of spherically shaped CuO nanoparticles with a size of 92 ± 3 nm at a concentration of 0.3 wt % increased the viscosity by a factor of 1.3.
{"title":"Influence of Inorganic Salts and Copper(II) Oxide Nanoparticles on the Viscosity of Lecithin Liquid Crystals","authors":"M. M. Zoshchik, M. A. Safronova, S. V. Shulaev, N. M. Murashova","doi":"10.1134/s001814392308026x","DOIUrl":"https://doi.org/10.1134/s001814392308026x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The effect of inorganic salts and CuO nanoparticles on the dynamic viscosity of a lamellar liquid crystalline mesophase in the lecithin–avocado oil–tea tree oil–water system was studied using rotational viscometry in a range of shear rates from 0.01 to 1.0 s<sup>–1</sup>. It was found that the viscosity of liquid crystals increased by a factor of 1.2–6.25 upon the introduction of aqueous solutions of NaCl, CaCl<sub>2</sub>, and CuCl<sub>2</sub> with a concentration of 0.1 mol/L or higher. The introduction of spherically shaped CuO nanoparticles with a size of 92 ± 3 nm at a concentration of 0.3 wt % increased the viscosity by a factor of 1.3.</p>","PeriodicalId":12893,"journal":{"name":"High Energy Chemistry","volume":"47 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-23DOI: 10.1134/s0018143923080234
S. A. Tovstun
Abstract
By comparing the results of calculations using the Mie theory, which is considered exact, a validity region of the approximate method for calculating the extinction cross section of spherical nanoparticles through polarizability has been found. The calculations were performed for w-CdS, InP, and PbS, and their results were presented in the form of the exact extinction cross section to the approximate absorption cross section ratio as a function of the particle size and light wavelength. The extinction coefficients for w-CdS and PbS nanoparticles depending on the wavelength and refractive index of the medium have also been calculated.
{"title":"Comparison of Extinction Cross Sections Obtained Using the Mie Theory and the Small Size Approximation for w-CdS, InP, and PbS Nanoparticles","authors":"S. A. Tovstun","doi":"10.1134/s0018143923080234","DOIUrl":"https://doi.org/10.1134/s0018143923080234","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>By comparing the results of calculations using the Mie theory, which is considered exact, a validity region of the approximate method for calculating the extinction cross section of spherical nanoparticles through polarizability has been found. The calculations were performed for w-CdS, InP, and PbS, and their results were presented in the form of the exact extinction cross section to the approximate absorption cross section ratio as a function of the particle size and light wavelength. The extinction coefficients for w-CdS and PbS nanoparticles depending on the wavelength and refractive index of the medium have also been calculated.</p>","PeriodicalId":12893,"journal":{"name":"High Energy Chemistry","volume":"471 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-23DOI: 10.1134/s0018143923080222
B. P. Tarasov, M. V. Lototsky
Abstract
The need for the transition to carbon-free energy and the introduction of hydrogen energy technologies as its key element is substantiated. The main issues related to hydrogen energy materials and systems, including technologies for the production, storage, transportation, and use of hydrogen are considered. The application areas of metal hydrides as promising materials for hydrogen energy technologies are presented. Prospects for the commercialization of hydrogen and metal hydride technologies are discussed, including those using cheap hydride-forming materials based on titanium–iron alloys.
{"title":"Hydrogen and Metal Hydride Energy Technologies: Current State and Problems of Commercialization","authors":"B. P. Tarasov, M. V. Lototsky","doi":"10.1134/s0018143923080222","DOIUrl":"https://doi.org/10.1134/s0018143923080222","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The need for the transition to carbon-free energy and the introduction of hydrogen energy technologies as its key element is substantiated. The main issues related to hydrogen energy materials and systems, including technologies for the production, storage, transportation, and use of hydrogen are considered. The application areas of metal hydrides as promising materials for hydrogen energy technologies are presented. Prospects for the commercialization of hydrogen and metal hydride technologies are discussed, including those using cheap hydride-forming materials based on titanium–iron alloys.</p>","PeriodicalId":12893,"journal":{"name":"High Energy Chemistry","volume":"155 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140929245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-23DOI: 10.1134/s0018143923080143
V. N. Kuryakov
Abstract
This paper presents the results of studies on the phase behavior of a nanosized aqueous dispersion of n-hexacosane (n-C26H54) using dynamic and static light scattering methods. The melting, crystallization, and rotator phase temperatures of particles of the test n-alkane were determined. A decrease in the melting temperature by 0.2°C and a decrease in the crystallization temperature by 14°C were observed for n-hexacosane (n-C26H54) particles with a size of no greater than 100 nm. The particles of the test n-alkane also exhibited an additional rotator phase, which was not observed in the bulk sample.
{"title":"Determination of Phase Transition Temperatures of Nanosized n-Hexacosane (n-C26H54) Particles in Aqueous Dispersion by an Optical Method","authors":"V. N. Kuryakov","doi":"10.1134/s0018143923080143","DOIUrl":"https://doi.org/10.1134/s0018143923080143","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This paper presents the results of studies on the phase behavior of a nanosized aqueous dispersion of <i>n</i>-hexacosane (<i>n</i>-C<sub>26</sub>H<sub>54</sub>) using dynamic and static light scattering methods. The melting, crystallization, and rotator phase temperatures of particles of the test <i>n</i>-alkane were determined. A decrease in the melting temperature by 0.2°C and a decrease in the crystallization temperature by 14°C were observed for <i>n</i>-hexacosane (<i>n</i>-C<sub>26</sub>H<sub>54</sub>) particles with a size of no greater than 100 nm. The particles of the test <i>n</i>-alkane also exhibited an additional rotator phase, which was not observed in the bulk sample.</p>","PeriodicalId":12893,"journal":{"name":"High Energy Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-23DOI: 10.1134/s001814392308012x
T. M. Gulieva, N. I. Kurbanova
Abstract
The effect of nanofiller additives containing cobalt oxide nanoparticles stabilized by a polymer matrix of high-density polyethylene (PE) on the structural features and properties of metal-containing nanocomposites based on isotactic polypropylene (PP) and nitrile butadiene rubber (NBR) has been studied using X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. An improvement in strength and deformation parameters was revealed, which is apparently due to the synergistic effect of the interfacial interaction of cobalt-containing nanoparticles in the PE matrix with the components of the PP/NBR polymer composition.
{"title":"Properties of Metal-Containing Nanocomposites Based on Isotactic Polypropylene and Nitrile Butadiene Rubber","authors":"T. M. Gulieva, N. I. Kurbanova","doi":"10.1134/s001814392308012x","DOIUrl":"https://doi.org/10.1134/s001814392308012x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The effect of nanofiller additives containing cobalt oxide nanoparticles stabilized by a polymer matrix of high-density polyethylene (PE) on the structural features and properties of metal-containing nanocomposites based on isotactic polypropylene (PP) and nitrile butadiene rubber (NBR) has been studied using X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. An improvement in strength and deformation parameters was revealed, which is apparently due to the synergistic effect of the interfacial interaction of cobalt-containing nanoparticles in the PE matrix with the components of the PP/NBR polymer composition.</p>","PeriodicalId":12893,"journal":{"name":"High Energy Chemistry","volume":"37 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-23DOI: 10.1134/s0018143923080180
A. A. Meshcheryakova, E. V. Tomina, S. A. Titov
Abstract
Nanosized NiFe2O4 has been obtained using solution combustion synthesis (SCS). The predominant fraction of the particles has a size of 21–50 nm (TEM). The degree of degradation of 2,4-dinitrophenol in a Fenton-like reaction in the absence of the NiFe2O4 catalyst is 6%, and that in the presence of NiFe2O4 is 53%. Effective oxidative degradation of the pollutant was carried out in a less acidic medium and at a higher initial concentration of dinitrophenol in comparison with the classical Fenton process. The results of the study can be applied in the development of new environmentally friendly water treatment systems at enterprises that use organic dyes in production cycles.
{"title":"Study of the Sorption and Catalytic Properties of Nickel Ferrite with Respect to 2,4-Dinitrophenol","authors":"A. A. Meshcheryakova, E. V. Tomina, S. A. Titov","doi":"10.1134/s0018143923080180","DOIUrl":"https://doi.org/10.1134/s0018143923080180","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Nanosized NiFe<sub>2</sub>O<sub>4</sub> has been obtained using solution combustion synthesis (SCS). The predominant fraction of the particles has a size of 21–50 nm (TEM). The degree of degradation of 2,4-dinitrophenol in a Fenton-like reaction in the absence of the NiFe<sub>2</sub>O<sub>4</sub> catalyst is 6%, and that in the presence of NiFe<sub>2</sub>O<sub>4</sub> is 53%. Effective oxidative degradation of the pollutant was carried out in a less acidic medium and at a higher initial concentration of dinitrophenol in comparison with the classical Fenton process. The results of the study can be applied in the development of new environmentally friendly water treatment systems at enterprises that use organic dyes in production cycles.</p>","PeriodicalId":12893,"journal":{"name":"High Energy Chemistry","volume":"60 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-23DOI: 10.1134/s0018143923080167
N. A. Magdalinova, M. V. Klyuev
{"title":"Palladium-Containing Aminated Activated Carbons: Hydrogenation of Multiple-Bond Organic Compounds","authors":"N. A. Magdalinova, M. V. Klyuev","doi":"10.1134/s0018143923080167","DOIUrl":"https://doi.org/10.1134/s0018143923080167","url":null,"abstract":"","PeriodicalId":12893,"journal":{"name":"High Energy Chemistry","volume":"23 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-23DOI: 10.1134/s0018143923080118
A. V. Gadomska, S. A. Tovstun, M. G. Spirin
Abstract
High-temperature colloidal synthesis was used to produce InP nanocrystals with a mean diameter of 2 nm covered with a thin ZnS shell and organic ligands ~1 nm in length. The addition of acetonitrile to a toluene solution of these nanoparticles led to the formation of aggregates with a hydrodynamic diameter of 0.2 μm. The aggregates were stable at acetonitrile/toluene ratios from 1/1 to at least 14/1. A close distance between nanocrystals in the aggregates enabled interparticle Förster resonance energy transfer. The addition of an excess of toluene to a solution of these aggregates promoted their disaggregation into individual InP/ZnS nanocrystals.
{"title":"Stable Submicron Aggregates of InP/ZnS Nanocrystals","authors":"A. V. Gadomska, S. A. Tovstun, M. G. Spirin","doi":"10.1134/s0018143923080118","DOIUrl":"https://doi.org/10.1134/s0018143923080118","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>High-temperature colloidal synthesis was used to produce InP nanocrystals with a mean diameter of 2 nm covered with a thin ZnS shell and organic ligands ~1 nm in length. The addition of acetonitrile to a toluene solution of these nanoparticles led to the formation of aggregates with a hydrodynamic diameter of 0.2 μm. The aggregates were stable at acetonitrile/toluene ratios from 1/1 to at least 14/1. A close distance between nanocrystals in the aggregates enabled interparticle Förster resonance energy transfer. The addition of an excess of toluene to a solution of these aggregates promoted their disaggregation into individual InP/ZnS nanocrystals.</p>","PeriodicalId":12893,"journal":{"name":"High Energy Chemistry","volume":"47 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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