N. I. Matskevich, E. R. Elbaev, A. N. Semerikova, A. Yu. Manakov, L. M. Levchenko, A. A. Shapovalova, V. P. Zaitsev, E. N. Tkachev
{"title":"Bismuth and Ytterbium Oxide Compounds: Preparation and Thermodynamics","authors":"N. I. Matskevich, E. R. Elbaev, A. N. Semerikova, A. Yu. Manakov, L. M. Levchenko, A. A. Shapovalova, V. P. Zaitsev, E. N. Tkachev","doi":"10.1134/S0036023625602120","DOIUrl":"10.1134/S0036023625602120","url":null,"abstract":"<p>The compound Bi<sub>1.3</sub>Yb<sub>0.7</sub>O<sub>3</sub> was prepared by solid-phase reactions. The compound had a cubic structure, space group <i>Fm</i>3<i>m</i>, with the unit cell parameter <i>a</i> = 0.54202 nm. The solution enthalpy of Bi<sub>1.3</sub>Yb<sub>0.7</sub>O<sub>3</sub> as measured by solution calorimetry in 2 M HCl was Δ<sub>sol</sub><i>H</i> <sup>0</sup> = −227.8 ± 6.3 kJ/mol. The measured enthalpy of solution was used to calculate the standard enthalpy of Bi<sub>1.3</sub>Yb<sub>0.7</sub>O<sub>3</sub> formation as Δ<sub>f</sub><i>H</i> <sup>0</sup> = −996.0 ± 7.9 kJ/mol. The lattice enthalpy for Bi<sub>1.3</sub>Yb<sub>0.7</sub>O<sub>3</sub> was calculated using the Born–Haber cycle as Δ<sub>lat</sub><i>H</i> <sup>0</sup> = −13278 kJ/mol.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"70 8","pages":"1231 - 1235"},"PeriodicalIF":1.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190197","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}
G. B. Yakovlev, A. F. Smol’yakov, O. A. Filippov, A. A. Titov, E. S. Shubina
{"title":"Binuclear Silver(I) Pyrazolate Complexes with Pyrazolyl-pyridine Derivatives: Association via Intramolecular Hydrogen Bonds and Ag···Ag Contacts","authors":"G. B. Yakovlev, A. F. Smol’yakov, O. A. Filippov, A. A. Titov, E. S. Shubina","doi":"10.1134/S0036023625602193","DOIUrl":"10.1134/S0036023625602193","url":null,"abstract":"<p>Cyclic trinuclear silver(I) complex, [AgPz]<sub>3</sub> (Pz = 3,5-bis(trifluoromethyl)pyrazolate), serves as a versatile platform for binding to chelating N^N-donor aromatic ligands. In this work, we have proposed derivatives of pyrazolyl-1<i>H</i>-pyridine (L) as ligands of this type, including 2-(3-phenyl-1<i>H</i>-pyrazol-5-yl)pyridine (L<sup>1</sup>) and 2-methyl-6-(3-phenyl-1<i>H</i>-pyrazol-5-yl)pyridine (L<sup>2</sup>). It has been found that complex of the composition [AgPzL<sub>1</sub>] (1 : 1 : 1) forms in solution regardless of reactants stoichiometry. The crystallization of the prepared compounds from toluene results in binuclear complexes with the composition [AgPz<sub>2</sub>Ln]<sub>2</sub> per one solvent molecule. The formation of these compounds is caused by hydrogen bonding between the NH groups of pyrazolylpyridines (L<sup>n</sup>) and the unshared electron pair of the nitrogen atom of the pyrazolate ligand. Shortened Ag…Ag contacts (3.143–3.197 Å) have been observed in the complex, which leads to additional stabilization of the structure. The prepared compounds exhibit ligand-centered phosphorescence in solid state at ambient temperature.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"70 8","pages":"1172 - 1178"},"PeriodicalIF":1.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190239","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}
Ya. A. Moroz, V. A. Shapovalov, N. S. Lozinskii, N. V. Tokii, T. V. Drokina, A. M. Vorotynov
{"title":"Hexamethylenetetramine Polyoxotungstophosphate Copper Complexes","authors":"Ya. A. Moroz, V. A. Shapovalov, N. S. Lozinskii, N. V. Tokii, T. V. Drokina, A. M. Vorotynov","doi":"10.1134/S0036023625601989","DOIUrl":"10.1134/S0036023625601989","url":null,"abstract":"<p>Hitherto undescribed copper(II) hexamethylenetetramine (HMTA) complexes of tungstophosphate metalates Rb<sub>5</sub>[PW<sub>11</sub>O<sub>39</sub>Cu(H<sub>2</sub>O)]‧9H<sub>2</sub>O (<b>I</b>), Rb<sub>5</sub>[PW<sub>11</sub>O<sub>39</sub>Cu(C<sub>6</sub>H<sub>12</sub>N<sub>4</sub>)]‧10H<sub>2</sub>O (<b>II</b>), Rb<sub>5</sub>[PW<sub>11</sub>O<sub>39</sub>Zn<sub>0.95</sub>Cu<sub>0.05</sub>(H<sub>2</sub>O)]‧9H<sub>2</sub>O (<b>III</b>), and Rb<sub>5</sub>[PW<sub>11</sub>O<sub>39</sub>Zn<sub>0.95</sub>Cu<sub>0.05</sub>(C<sub>6</sub>H<sub>12</sub>N<sub>4</sub>)]‧10H<sub>2</sub>O (<b>IV</b>) were prepared and characterized by IR and electronic spectroscopies, X-ray powder diffraction, and electron paramagnetic resonance (EPR). The copper-ion absorption peak in the spectrum shifts to the longer wavelengths in going from [Cu(H<sub>2</sub>O)<sub>6</sub>]<sup>2+</sup> through [PW<sub>11</sub>O<sub>39</sub>Cu(H<sub>2</sub>O)]<sup>5–</sup> [PW<sub>11</sub>O<sub>39</sub>Zn<sub>0.95</sub>Cu<sub>0.05</sub>(H<sub>2</sub>O)]<sup>5–</sup>, and [PW<sub>11</sub>O<sub>39</sub>Cu(C<sub>6</sub>H<sub>12</sub>N<sub>4</sub>)]<sup>5–</sup>, to [PW<sub>11</sub>O<sub>39</sub>Zn<sub>0.95</sub>Cu<sub>0.05</sub>(C<sub>6</sub>H<sub>12</sub>N<sub>4</sub>)]<sup>5–</sup> because of the changing ligand-field strength in the inner sphere of the complex. Electron paramagnetic resonance showed a significant difference between the magnitudes of the ligand field around the octahedrally coordinated Cu<sup>2+</sup> ions in complexes (<b>III</b>) and (<b>IV</b>): the height of the crystal field potential barrier at the location of the Cu<sup>2+</sup> ion differs more than twofold due to the replacement of a water molecule by an HMTA molecule C<sub>6</sub>H<sub>12</sub>N<sub>4</sub>. The results of the studies can be helpful in the preparation and structure determination of other tungstate polyoxometalates with inner-sphere paramagnetic ions.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"70 8","pages":"1150 - 1156"},"PeriodicalIF":1.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190167","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}
V. I. Lagunova, E. Yu. Filatov, P. E. Plyusnin, N. V. Kuratieva, S. V. Korenev
{"title":"Chloropentaammine- and Tris(ethylenediamine)cobalt(III) Oxalatocuprates(II): Synthesis, Crystal Structure, and Thermal Properties","authors":"V. I. Lagunova, E. Yu. Filatov, P. E. Plyusnin, N. V. Kuratieva, S. V. Korenev","doi":"10.1134/S003602362560114X","DOIUrl":"10.1134/S003602362560114X","url":null,"abstract":"<p>New double complex salts [Co(NH<sub>3</sub>)<sub>5</sub>Cl][Cu(H<sub>2</sub>O)(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>] and [Co(en)<sub>3</sub>]<sub>2</sub>[Cu(H<sub>2</sub>O)(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>]<sub>2</sub>[Cu(H<sub>2</sub>O)<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>]·10H<sub>2</sub>O (en is ethylenediamine) have been prepared and their thermal properties have been studied. The compounds have been characterized by physicochemical methods of analysis (single crystal and powder X-ray diffraction, IR spectroscopy and elemental analysis). It has been found using thermal analysis and powder X-ray diffraction that decomposition of the complex salts leads to formation of metastable Co<sub><i>x</i></sub>Cu<sub>1–<i>x</i></sub> solid solutions with high mutual solubility of metals. Formation of metastable solid solutions in Co–Cu system has been shown.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"70 8","pages":"1198 - 1207"},"PeriodicalIF":1.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190168","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}
A. S. Zaguzin, Ya. A. Zaitsev, A. V. Zaitsev, N. A. Korobeynikov, M. A. Bondarenko, E. A. Maksimovskii, V. P. Fedin, S. A. Adonin
{"title":"Crystal Structures and Properties of Metal-Organic Coordination Polymers [Zn2(bdc)x(bdc-I)(2–x)dabco]","authors":"A. S. Zaguzin, Ya. A. Zaitsev, A. V. Zaitsev, N. A. Korobeynikov, M. A. Bondarenko, E. A. Maksimovskii, V. P. Fedin, S. A. Adonin","doi":"10.1134/S0036023625601436","DOIUrl":"10.1134/S0036023625601436","url":null,"abstract":"<p>New mixed-ligand organometallic frameworks based on zinc terephthalate (bdc), 2‑iodoterephthalate (bdc-I), and 1,4-diazabicyclo[2.2.2]octane (dabco) were obtained: [Zn<sub>2</sub>(bdc)<sub>1.67</sub>(bdc-I)<sub>0.33</sub>dabco] (<b>I</b>), [Zn<sub>2</sub>(bdc)<sub>1.46</sub>(bdc-I)<sub>0.54</sub>dabco] (<b>II</b>), [Zn<sub>2</sub>(bdc)<sub>1.12</sub>(bdc-I)<sub>0.88</sub>dabco] (<b>III</b>), [Zn<sub>2</sub>(bdc)<sub>0.80</sub>(bdc-I)<sub>1.2</sub>dabco] (<b>IV</b>), [Zn<sub>2</sub>(bdc)<sub>0.46</sub>(bdc-I)<sub>1.54</sub>dabco] (<b>V</b>). Their structures and composition were determined by single-crystal and powder X-ray diffraction, as well as elemental analysis. Compounds <b>I–V</b> are isostructural with [Zn<sub>2</sub>(bdc)<sub>2</sub>(dabco)], but not with [Zn<sub>2</sub>(bdc-I)<sub>2</sub>(dabco)], which we have not described previously, which is confirmed by X-ray powder diffraction data. Experiments on the sorption of diiodine vapors are consistent with the idea that the presence of a larger amount of 2-iodoterephthalate in the MOF should lead to a decrease in pore volume: the greatest amount of I<sub>2</sub> is absorbed by <b>I</b>, and the smallest by is absorbed <b>V</b>.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"70 8","pages":"1125 - 1131"},"PeriodicalIF":1.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190200","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}
D. A. Barantsev, N. V. Pervukhina, N. V. Kuratieva, T. G. Cherkasova
{"title":"Synthesis and Crystal Structures of Framework Tetrarhodanomercurate Mn(II), Fe(II), and Cd(II) Complexes with Nicotinamide","authors":"D. A. Barantsev, N. V. Pervukhina, N. V. Kuratieva, T. G. Cherkasova","doi":"10.1134/S0036023625601357","DOIUrl":"10.1134/S0036023625601357","url":null,"abstract":"<p>New bimetallic complexes of the composition [MHg(C<sub>6</sub>H<sub>6</sub>N<sub>2</sub>O)<sub>2</sub>(SCN)<sub>4</sub>] have been synthesized, where M = Mn<sup>2+</sup> (<b>I</b>), Fe<sup>2+</sup> (<b>II</b>), Cd<sup>2+</sup> (<b>III</b>) and C<sub>6</sub>H<sub>6</sub>N<sub>2</sub>O is nicotinamide (NA). The compounds were obtained from aqueous solutions and studied by CHNS/O analysis, IR spectroscopy, inductively coupled plasma optical emission spectrometry (ICP-OES), and single-crystal X-ray diffraction. Compounds <b>I</b>–<b>III</b> are isostructural and crystallize in the monoclinic syngony (space group <i>C</i>2/<i>c</i>). The coordination environment of the M<sup>2+</sup> atom is formed by two donor nitrogen atoms of two monodentately coordinated NA and four nitrogen atoms of the SCN groups, which form bridges between the M<sup>2+</sup> and Hg<sup>2+</sup> ions, connecting them into a three-dimensional framework. Hg<sup>2+</sup> ions have a tetrahedral coordination environment consisting of four S atoms of four SCN groups.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"70 8","pages":"1179 - 1183"},"PeriodicalIF":1.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190198","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}
T. O. Kozlova, D. N. Vasilyeva, I. V. Savintseva, A. L. Popov, N. P. Simonenko, D. A. Kozlov
{"title":"Hydrothermal Synthesis of K2Ce(PO4)2·хH2O and Analysis of Its Photoprotective Properties","authors":"T. O. Kozlova, D. N. Vasilyeva, I. V. Savintseva, A. L. Popov, N. P. Simonenko, D. A. Kozlov","doi":"10.1134/S0036023625602223","DOIUrl":"10.1134/S0036023625602223","url":null,"abstract":"<p>A new method for obtaining K<sub>2</sub>Ce(PO<sub>4</sub>)<sub>2</sub><i>·x</i>H<sub>2</sub>O (space group <i>I</i>4<sub>1</sub>/<i>amd</i>, <i>a</i> = <i>b</i> = 6.8300(2) Å, <i>c</i> = 17.8488(4) Å, <i>V</i> = 832.63(4) Å<sup>3</sup>, <i>Z</i> = 4) under hydrothermal conditions has been developed. It has been established that the thermolysis of this compound proceeds through three stages of mass loss with the formation of CePO<sub>4</sub> and K<sub>4</sub>P<sub>2</sub>O<sub>7</sub> as intermediate products, which upon further heating form a mixture of CePO<sub>4</sub> and K<sub>3</sub>Ce(PO<sub>4</sub>)<sub>2</sub>. The calculated values of the sun protection factor and UV-A protection factor for K<sub>2</sub>Ce(PO<sub>4</sub>)<sub>2</sub>·<i>x</i>H<sub>2</sub>O were 2.1 and 2.0, respectively. In relation to the human keratinocyte cell line (HaCaT), a photoprotective effect of K<sub>2</sub>Ce(PO<sub>4</sub>)<sub>2</sub>·<i>x</i>H<sub>2</sub>O was recorded. For the first time, the photoactive properties of KCe<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> and K<sub>2</sub>Ce(PO<sub>4</sub>)<sub>2</sub>·<i>х</i>H<sub>2</sub>O in the decomposition reaction of methylene blue were evaluated. A significant slowdown in the decomposition reaction of an organic dye was demonstrated when using K<sub>2</sub>Ce(PO<sub>4</sub>)<sub>2</sub>·<i>х</i>H<sub>2</sub>O.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"70 8","pages":"1140 - 1149"},"PeriodicalIF":1.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190165","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}
O. N. Kondrat’eva, M. N. Smirnova, G. E. Nikiforova, A. V. Tyurin, V. A. Ketsko
{"title":"Thermophysical Properties of Ceramics Produced from Nanocrystalline InFeZnO4 Powder","authors":"O. N. Kondrat’eva, M. N. Smirnova, G. E. Nikiforova, A. V. Tyurin, V. A. Ketsko","doi":"10.1134/S0036023625601758","DOIUrl":"10.1134/S0036023625601758","url":null,"abstract":"<p>The paper discusses the results of a study of the structural and thermophysical characteristics of polycrystalline ceramics produced from the InFeZnO<sub>4</sub> nanoparticles. It was found that the bulk density of the resulting material is ~86% of the theoretical one. Scanning electron microscopy has shown that it has a dense microcrystalline structure consisting of randomly oriented grains with dimensions of 5–20 µm. The thermal diffusivity of InFeZnO<sub>4</sub> ceramics was studied using the laser flash method. It was found that as the temperature increases from 299 to 1273 K, it decreases from 1.29 to 0.44 mm<sup>2</sup>/s. Using adiabatic and differential scanning calorimetry, the temperature dependence of the heat capacity of InFeZnO<sub>4</sub> was studied for the first time. It was established that the measured curve has no signs of the existence of phase transitions in the range from 83 to 923 K. Using experimental data on thermal diffusivity, heat capacity, and density, an equation for the dependence describing the change in thermal conductivity of the material under study in the range from 299 to 1273 K was obtained. It was revealed that ceramics produced from InFeZnO<sub>4</sub> nanoparticles obtained by the polymer-salt method have a higher thermal conductivity compared to those synthesized by standard ceramic technology from a mixture of In<sub>2</sub>O<sub>3</sub>, Fe<sub>2</sub>O<sub>3</sub>, and ZnO oxides. The results obtained allow us to recommend InFeZnO<sub>4</sub> as a basis for the creation of thermally stable functional materials with low thermal conductivity at high temperatures.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"70 8","pages":"1157 - 1165"},"PeriodicalIF":1.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190201","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}
Ph. Yu. Gorobtsov, N. A. Fisenko, N. P. Simonenko, T. L. Simonenko, E. P. Simonenko
{"title":"Aerosol Printing of Electrochromic Films Based on Nickel- or Tungsten-Doped V2O5","authors":"Ph. Yu. Gorobtsov, N. A. Fisenko, N. P. Simonenko, T. L. Simonenko, E. P. Simonenko","doi":"10.1134/S003602362560220X","DOIUrl":"10.1134/S003602362560220X","url":null,"abstract":"<p>Vanadium(V) oxide films doped with 10 mol % NiO and 10 mol % WO<sub>3</sub> were prepared by aerosol printing. In the case of nickel doping, the film crystallized in the tetragonal β-V<sub>2</sub>O<sub>5</sub> modification with strong texturing along the {200} crystallographic plane, while tungsten doping resulted in an X-ray amorphous material. The nickel-doped film consisted of one-dimensional structures, whereas the V<sub>2</sub>O<sub>5</sub>–10 mol % WO<sub>3</sub> composition formed particles of irregular or nearly spherical shape. The electron work function values indicated high number of defects in the WO<sub>3</sub>-containing film. Both samples exhibited anodic electrochromism, with the V<sub>2</sub>O<sub>5</sub>–10 mol % NiO demonstrating higher optical contrast and coloration efficiency. The results clearly show the influence of dopant nature on the functional properties of the obtained materials and demonstrate the potential of aerosol printing for fabricating electrochromic films.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"70 8","pages":"1236 - 1242"},"PeriodicalIF":1.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190241","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}
V. R. Ibragimova, I. V. Sapkov, E. I. Efremova, Z. A. Kudryashova, E. G. Rustamova, D. V. Korolev, E. I. Kunitsyna, Yu. V. Ioni
{"title":"Preparation and Investigation of Composite Based on Reduced Graphene Oxide and Fe3O4 Nanoparticles","authors":"V. R. Ibragimova, I. V. Sapkov, E. I. Efremova, Z. A. Kudryashova, E. G. Rustamova, D. V. Korolev, E. I. Kunitsyna, Yu. V. Ioni","doi":"10.1134/S0036023625602211","DOIUrl":"10.1134/S0036023625602211","url":null,"abstract":"<p>Graphene oxide (GO) and composites based on it are often used to produce graphene-like materials by thermal or chemical reduction, and the reduction method strongly affects the properties of the materials. In this study, a new method was proposed to prepare a conductive composite based on reduced graphene oxide (rGO) with magnetite nanoparticles (NPs) with an average diameter of 18 nm dispersed on its surface. The method consisted of treating a GO-based composite with Fe<sub>3</sub>O<sub>4</sub> on the its surface in supercritical isopropanol. The composites based on GO and rGO and magnetite NPs were investigated by FTIR spectroscopy, X-ray powder diffraction analysis, and scanning electron microscopy. It is shown that the sample compact film of the rGO-based composite has specific surface resistivity is 22 Ω cm<sup>–2</sup> and saturation magnetisation is 32.3 emu/g.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"70 8","pages":"1252 - 1258"},"PeriodicalIF":1.5,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190199","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}