Russian Journal of Inorganic Chemistry最新文献

{"title":"Photoactive Layers based on ZnO Nanorods Obtained by Hydrothermal Synthesis for Dye-Sensitized Solar Cells","authors":"E. P. Averochkin, A. Steparuk, E. V. Tekshina, D. A. Krupanova, V. V. Emets, L. S. Volkova, R. M. Ryazanov, E. Lebedev, S. Kozyukhin","doi":"10.1134/S0036023624600734","DOIUrl":"https://doi.org/10.1134/S0036023624600734","url":null,"abstract":"","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141922851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulation of Phase Complex of Stable Pentatope LiF–K_2CrO_4–Rb_2CrO_4–KF–RbF of the Four-Component Reciprocal System Li^+,K^+,Rb^+||F^–,\u0000 \u0000 \u0000 \u0000 $${text{CrO}}_{4}^{{2 - }}$$\u0000 \u0000","authors":"A. V. Burchakov, E. O. Burchakova","doi":"10.1134/S0036023624600606","DOIUrl":"https://doi.org/10.1134/S0036023624600606","url":null,"abstract":"","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141924925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Features of the Structure and Thermal Properties of Borate Tungstates LnBWO6 (Ln = La; La0.999Nd0.001 and La0.99Gd0.01) Synthesized by the Sol–Gel Method","authors":"V. A. Krut’ko, M. G. Komova, R. D. Svetogorov, A. V. Khoroshilov, N. N. Efimov, E. A. Ugolkova","doi":"10.1134/s0036023624600394","DOIUrl":"https://doi.org/10.1134/s0036023624600394","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Borate tungstates LnBWO₆ (Ln = La; La_0.999Nd_0.001 and La_0.99Gd_0.01) are synthesized by the Pechini method followed by annealing of the intermediates and examined by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The crystallographic parameters of the synthesized LnBWO₆ are refined by powder X-ray diffraction in two crystal systems: monoclinic (space group <i>P</i>2₁) and orthorhombic (space group <i>P</i>222). Reversible first-order phase transitions in the synthesized LnBWO₆ are detected by the DSC method, and the temperatures and enthalpies of phase transformations are determined. The doping of LnBWO₆ with Nd³⁺ and Gd³⁺ ions is shown to decrease the temperature of the LT (low-temperature) → HT (high-temperature) phase transition of LaBWO₆. Two independent positions of Gd in the La_0.99Gd_0.01BWO₆ structure are determined from the experimental electron paramagnetic resonance (EPR) data.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of La2Ti2O7 Nanoscale Powder and Ceramics Based on It by Sol–Gel Synthesis and Spark Plasma Sintering","authors":"O. O. Shichalin, E. K. Papynov, A. A. Belov, K. A. Pervakov, S. S. Gribanova, S. M. Pisarev, A. N. Fedorets, A. V. Pogodaev, A. O. Lembikov, Ya. G. Zernov, P. A. Marmaza, O. V. Kapustina, E. A. Gridasova, I. Yu. Buravlev","doi":"10.1134/s0036023624600424","DOIUrl":"https://doi.org/10.1134/s0036023624600424","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The use of ceramics as matrices for immobilization of radionuclides for the purpose of their safe long-term disposal or useful application is studied with an emphasis placed on phase stability, structural integrity, hydrolytic stability, etc. This work implements a combined approach based on the sol–gel citrate synthesis of nanosized La₂Ti₂O₇ powder and its subsequent spark plasma sintering to produce dense ceramics. The phase composition and structure of the nanosized La₂Ti₂O₇ powder and the ceramic samples obtained in the temperature range of 900–1300°C were studied by powder X-ray diffraction and SEM. It was shown that the conditions of synthesis of the powder ensure the formation of nanosized crystalline La₂Ti₂O₇ grains, consolidation of which under spark plasma heating is accompanied by a change in the phase composition of La₂Ti₂O₇ from a single-phase monoclinic structure to orthorhombic structure with a LaTiO₃ impurity at temperatures above 1200°C. It was found that a change in the ceramic structure is accompanied by the formation of non-porous and defect-free monolithic samples. This type of change was shown to lead to an increase in the relative density (81.3–95.7%) and compressive strength (78–566 MPa) of the ceramics. However, the hydrolytic stability decreases, as indicated by increasing La³⁺ leaching rate from 10^–7 to 10^–5 g/(cm² day). The obtained results are useful for the systematic study of materials suitable for immobilization of radioactive waste in ceramics.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of the Composition of the MF–HCl (M = Li+, Na+, $${text{NH}}_{4}^{ + }$$ ) Etching System on the Gas-Sensing Properties of Ti3C2Tx/TiOx Nanocomposites","authors":"E. P. Simonenko, A. S. Mokrushin, I. A. Nagornov, V. M. Sapronova, Yu. M. Gorban, Ph. Yu. Gorobtsov, T. L. Simonenko, N. P. Simonenko, N. T. Kuznetsov","doi":"10.1134/s0036023624600837","DOIUrl":"https://doi.org/10.1134/s0036023624600837","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A study was made of the effect of the nature of the MF–HCl (M = Li⁺, Na⁺, <span>({text{NH}}_{4}^{ + })</span>) etching systems on the synthesis of Ti₃C₂T_<i>x</i> MXenes based on the Ti₃AlC₂ MAX phase, microstructure, phase purity, interlayer distance, composition of functional surface groups, thermal behavior, and work function of the resulting products. The gas-sensing properties of Ti₃C₂T_<i>x</i> receptor layers deposited by microplotter printing were tested to a wide range of gaseous analytes (H₂, CO, NH₃, NO₂, O₂, benzene, acetone, methane, and ethanol) at room temperature. An increased sensitivity to ammonia was detected for MXenes produced by exposure to hydrochloric acid solutions of sodium and ammonium fluorides, and an elevated sensitivity to carbon monoxide was determined for a sample synthesized using the LiF–HCl system. High responses (~20–30% per 100 ppm NO₂) were measured for all three receptor materials; however, sensor recovery processes were much more difficult. To improve the sensory characteristics, the sensitive Ti₃C₂T_<i>x</i> layers were subjected to relatively low temperature heat-treatment in an air atmosphere to form Ti₃C₂T_<i>x</i>/TiO_<i>x</i> nanocomposites. It was detected that partially oxidized MXenes exhibit a high selective response to oxygen at very low operating temperatures (125–175°C), which is especially typical of the material produced using the HCl–NaF system.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In situ Synthesis of Nano-CeO2 Composite with Chitosan","authors":"L. A. Zemskova, V. E. Silant’ev, D. Kh. Shlyk","doi":"10.1134/s0036023624600515","DOIUrl":"https://doi.org/10.1134/s0036023624600515","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Nanosized cerium oxide (CeO₂) particles were prepared by co-precipitation using chitosan as a template, cerium(III) nitrate and cerium(IV) sulfate as starting substances, and aqueous ammonia as a precipitating agent. According to powder X-ray diffraction data, cerianite with face-centered cubic phase is formed in the reaction systems. The size of the coherent scattering regions is not more than ⁓3 nm. Fourier transform IR spectroscopy data indicate to interaction of polymer molecules with the inorganic component. The shift of N–H absorption bands for composites containing Ce(III) and Ce(IV) compared to those of chitosan indicates that amino groups interact with CeO₂ particles loaded in the polymer. The use of chitosan as a matrix for the synthesis of CeO₂ nanoparticles showed that this approach is more economical and facile to produce nanomaterials for various applications.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sol-Gel Synthesis, Structure, and Adsorption Properties of LiMgxMn(2 – x)O4 (0 ≤ x ≤ 0.7) Oxides","authors":"Sh. A. Begimkulova, A. M. Nasimov, O. N. Ruzimuradov, V. G. Prozorovich, A. I. Ivanets","doi":"10.1134/s0036023624600485","DOIUrl":"https://doi.org/10.1134/s0036023624600485","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Lithium manganese oxides with a spinel structure LiMg_<i>x</i>Mn_{(2 –} _<i>x</i>)O₄ doped with Mg²⁺ ions in the range 0 ≤ <i>x</i> ≤ 0.7, were obtained by sol-gel synthesis. Phase composition and morphology of obtained oxides were studied by X-ray powder diffraction and scanning electron microscopy. It is shown, that in the studied range 0 ≤ <i>x</i> ≤ 0.7 Mg-doped lithium manganese oxides saved the structure of the original cubic spinel LiMn₂O₄, while an increase in parameter <i>a</i> was observed from 8.175 to 8.309 Å and average crystallite size practically unchanged (30–36 nm). Samples of the initial LiMn₂O₄ spinel and Mg-doped spinel consisted of prismatic particles of submicron (0.1–0.2 µm) and micron (1.0–3.0 µm) sizes, respectively. The effect of the adsorbent dose (0.05–0.3 g/L) and pH (3.0–13.0) of the solution on the adsorption efficiency was studied. The adsorption isotherms of samples LiMg_0.3Mn_1.7O₄ were described by the Langmuir monomolecular adsorption equation. An increase in the temperature of the model solution from 25 to 45°C was accompanied by an increase in the maximum adsorption of the LiMg_0.3Mn_1.7O₄ samples from 10.50 to 10.98 mmol/g, which indicates the endothermic nature of the adsorption process. The kinetics of adsorption was well described by a pseudo-second order equation, which indicates the occurrence of chemical interaction during the adsorption process.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional Design of Peroral Iron Compound Delivery Systems Based on Polymethylsilsesquioxane Hydrogels for the Therapy of Iron Deficiency Anemia","authors":"P. D. Orlova, I. B. Meshkov, E. V. Latipov, S. G. Vasil’ev, A. A. Kalinina, A. M. Muzafarov, I. M. Le-Deygen","doi":"10.1134/s0036023624600266","DOIUrl":"https://doi.org/10.1134/s0036023624600266","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>An approach to the development of peroral iron drug delivery systems for the therapy of iron deficiency anemia is proposed. The new systems are based on polymethylsilsesquioxane hydrogels with a variable structure as biocompatible and biodegradable supports. The hydrogels are found to exhibit a high sorption capacity toward a saturated solution of FeCl₃∙6H₂O (0.27 M), whereas the sorption capacity toward a saturated solution of iron D-gluconate (0.24 M) is lower and amounts to ~30%. The developed delivery systems are studied by IR and UV spectroscopy, and the iron atom distribution over the hydrogels is studied. The prepared systems are found to be promising for the further development of drug formulations.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of New Hybrid Materials of SiO2@Melamine-Cyanurate as Precursors for Graphite-Like Carbon Nitride","authors":"M. D. Lebedev, A. A. Goncharenko, I. A. Skvortsov, M. S. Kuzmikov, A. S. Vashurin","doi":"10.1134/s0036023624600217","DOIUrl":"https://doi.org/10.1134/s0036023624600217","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This work describes the use of silica particles obtained by sol-gel method as a template for deposition of supramolecular complexes of melamine cyanurate. To obtain SiO₂@melamine-cyanurate (SiO₂@MCA) material, the method of covalent modification of silica surface by melamine molecules (SiO₂-mel) was applied and the method of its further functionalization by hydrogen-bonded organic framework of melamine-cyanurate (HOF, MCA) was proposed. One of the promising directions of using SiO₂@melamine-cyanurate is obtaining the SiO₂@g-C₃N₄ material based on it. Control of the amount of applied melamine-cyanurate allows one to potentially obtain g-C₃N₄ layers of different thicknesses on the silica surface.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gas-Sensing Properties of the Ti0.2V1.8CTx/V2O5 Nanocomposite","authors":"E. P. Simonenko, A. S. Mokrushin, I. A. Nagornov, V. M. Sapronova, Yu. M. Gorban, Ph. Yu. Gorobtsov, T. L. Simonenko, N. P. Simonenko, N. T. Kuznetsov","doi":"10.1134/s0036023624600850","DOIUrl":"https://doi.org/10.1134/s0036023624600850","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A method was developed for producing a nanocomposite containing a Ti_0.2V_1.8CT_<i>x</i> MXene core and surface layers of titanium-doped vanadium oxide by relatively low temperature partial oxidation of multilayer MXene, a two-dimensional vanadium titanium carbide. It was shown that, during the oxidation of the initial Ti_0.2V_1.8CT_<i>x</i> in an air atmosphere at a temperature of 250°C, the microstructure of accordion-like aggregates is preserved with a slight increase in the porosity of their constituent layers and an increase in their thickness due to the formation of V₂O₅. The MXene structure was detected to be preserved with a decrease in the interplanar distance from 10.3 Å (initial Ti_0.2V_1.8CT_<i>x</i> powder) to 7.3 Å. Raman spectroscopy confirmed the formation of vanadium oxide. Kelvin probe force microscopy determined that, in the formation of Ti_0.2V_1.8CT_<i>x</i>/V₂O₅ nanocomposite, the work function decreases from 4.88 eV (Ti_0.2V_1.8CT_<i>x</i>) to 4.68 eV. A comprehensive analysis was made of the chemosensory properties of Ti_0.2V_1.8CT_<i>x</i>/V₂O₅ layers deposited by microplotter printing to a number of gaseous analytes (H₂, CO, NH₃, NO₂, C₆H₆, C₃H₆O, CH₄, C₂H₅OH, and O₂). At elevated detection temperatures (125–200°C), high sensitivity to oxygen (10% O₂) and NO₂ (100 ppm) was detected; throughout the entire temperature range (25–200°C), there were noticeable responses to humidity (50% RH). If the temperature detection was room temperature, good sensitivity to acetone, ethanol, and ammonia was observed.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}