Guangyao Li, Shihang Dai, Yao Liu, Xiaoli Fan, Jiying Cai
{"title":"Study on the Performance of Metal-coated LiNi1/3Co1/3Mn1/3O2 Cathode Materials Prepared by Decomposition of Organic Salts","authors":"Guangyao Li, Shihang Dai, Yao Liu, Xiaoli Fan, Jiying Cai","doi":"10.1134/S0036024426701517","DOIUrl":"10.1134/S0036024426701517","url":null,"abstract":"<p>Copper-coated LiNi<sub>1/3</sub>Co<sub>1/3</sub>Mn<sub>1/3</sub>O<sub>2</sub> (NCM/Cu and NCM-Cu) cathode materials were successfully synthesized via a facile chemical precipitation method coupled with organic salt decomposition. The surface morphology and elemental distribution of the samples were characterized by scanning electron microscopy. The phase composition of the two materials was further analyzed by X-ray diffraction (XRD), which confirmed that the organic salt decomposition-assisted chemical precipitation method did not destroy the original crystal structure of NCM. The copper coating improved Li<sup>+</sup> diffusion, lowered interfacial impedance, expanded electron transport pathways, increased the material’s structural stability during charge-discharge cycling, and provided the material with outstanding rate capability and cycling stability. Specifically, after 100 cycles at 0.5C, the capacity retention rates of NCM-Cu and NCM/Cu reached 70.4 and 77.6%, respectively. Moreover, NCM/Cu delivered discharge capacities of 156.8 at 2C and 124.1 mA h g<sup>–1</sup> at 5C, with capacity retention rates of 65.9 (2C) and 57.4% (5C) after 100 cycles. This work provides a feasible strategy for enhancing the rate capability of commercial cathode materials via surface metal coating.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 9","pages":"2046 - 2055"},"PeriodicalIF":0.7,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878021","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}
{"title":"Exploring the Impact of Antimony on the Structural, Phase Transition, Optoelectronic, Elastic and Thermoelectric Properties of Aluminum Nitride: A First-Principles Approach","authors":"Nesrine Louati, Faycal Oumelaz, Ouarda Nemiri, Djamel Boudjaadar, Rabab Benredouane, Akila Boumaza, Hocine Meradji, Sebti Ghemid, Kalpana Sahoo, Debidatta Behera","doi":"10.1134/S0036024426701463","DOIUrl":"10.1134/S0036024426701463","url":null,"abstract":"<p>The structural, electronic, optical, elastic, mechanical, and thermoelectric properties of <span>({text{Al}}{{{text{N}}}_{{1-x}}}{text{S}}{{{text{b}}}_{x}})</span> (<i>x</i> = 0.0, 0.25, 0.50, 0.75, and 1.0) semiconductors were systematically investigated using the full-potential linearized augmented plane-wave (FP-LAPW) method within the framework of density functional theory (DFT) as implemented in the WIEN2k software. Structural parameters, including lattice constants, bulk modulus, and transition pressures, were computed using the WC-GGA functional, showing excellent agreement with experimental and theoretical data for binary compounds, while results for ternary alloys are presented as predictive insights. Elastic constants and mechanical properties such as brittleness, ductility, hardness, and acoustic behavior were derived, confirming structural integrity and anisotropic mechanical characteristics. Electronic properties were analyzed using EV–GGA, TB–mBJ, and KTB–mBJ exchange-correlation schemes, revealing wide band gap only for AlN, with indirect gaps in binary compounds (AlN, AlSb) and direct gaps in ternary alloys (AlN<sub>0.75</sub>Sb<sub>0.25</sub>, AlN<sub>0.5</sub>Sb<sub>0.5</sub>, and AlN<sub>0.25</sub>Sb<sub>0.75</sub>), highlighting their potential for optoelectronic applications. Optical properties, including the dielectric function, refractive index, and absorption coefficient, were computed using the KTB–mBJ scheme, elucidating their strong correlation with the electronic band structure. Finally, thermoelectric performance was evaluated, demonstrating promising characteristics for energy applications, thereby offering comprehensive insights into the multifunctional potential of these semiconductors.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 9","pages":"1984 - 2007"},"PeriodicalIF":0.7,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878170","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}
S. V. Badmaeva, S. Ts. Khankhasaeva, M. V. Ukhinova
{"title":"Adsorption of Acid Blue 80 Dye on Bentonite Clay Modified with Aluminum and Iron Oxides","authors":"S. V. Badmaeva, S. Ts. Khankhasaeva, M. V. Ukhinova","doi":"10.1134/S0036024426701475","DOIUrl":"10.1134/S0036024426701475","url":null,"abstract":"<p>The adsorption of the anthraquinone dye Acid Blue 80 on bentonite modified with aluminum and iron oxides has been studied. It was found that clay modification leads to an increase in the specific surface area and sorption capacity. The effect of physicochemical parameters on adsorption has been investigated. It was determined that the adsorption capacity increases with an increase in the pH of the medium from 3.5 to 4.1 and decreases with a further increase to pH 10. It was also found that adsorption decreases with increasing sorbent loading and increases with increasing initial dye concentration. At an initial concentration of 210 mg/L, the adsorption is 40 mg/g. The equilibrium isotherm of the dye adsorption is analyzed using the Langmuir, Freundlich, and Temkin models. According to the values of the correlation coefficients, the experimental isotherm best correspond to the Freundlich model describing polymolecular adsorption on an inhomogeneous surface. The kinetics of the dye adsorption satisfies the pseudo-first order kinetic model. The results showed that the modified bentonite is a highly effective sorbent of the Acid Blue 80 and has prospects for use as a sorbent for removing anthraquinone dyes from wastewater.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 9","pages":"2008 - 2015"},"PeriodicalIF":0.7,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878131","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}
Suja Jose, R. Roshini, S. L. Angel, S. Sivamalar, Manoj Jayan, R. J. Carlin, Muthuswamy Senthil
{"title":"Wet Chemical Processing of Pure and Nickel Substituted Hydroxyapatite and Its Characterization for Bio-Medical Applications","authors":"Suja Jose, R. Roshini, S. L. Angel, S. Sivamalar, Manoj Jayan, R. J. Carlin, Muthuswamy Senthil","doi":"10.1134/S0036024426701566","DOIUrl":"10.1134/S0036024426701566","url":null,"abstract":"<p>Hydroxyapatite (HAp) is a calcium phosphate that resembles the hard tissues of humans. It is the primary component of bone and enamel and can be produced artificially using a variety of techniques. Synthetic hydroxyapatite doped with metal ions might improve its various physiochemical and biological properties. The current study is based on a facile wet chemical technique for producing Ni substituted hydroxyapatite (HAp) nanoparticles with the processing conditions such as reaction temperature of 80°C, heat treatment temperature of 450°C and PH of 11. The influence of nickel on the structural, morphological and optical properties of the prepared samples was analyzed by XRD, SEM EDX, FTIR, and UV characterization techniques. Anti-bacterial behavior of the samples was analyzed by disc diffusion method. The results revealed that the prepared Ni-HAp particles had a flake-like morphology with a size of 60 nm. The FTIR spectra exhibited the functional groups present in the samples. The UV studies showed that the Ni incorporated HAp sample had enhanced optical properties.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 9","pages":"2097 - 2103"},"PeriodicalIF":0.7,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148877974","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}
Arbaz Chaudhary, Ramakrishna Madaka, Beauty Pandey, Daya Shankar, Dipak Kumar Sahoo, D. Jagadeeswara Rao, Jatindra Kumar Rath
{"title":"Flexible and Biocompatible Pressure Sensor Based on Biomembrane Piezoelectricity","authors":"Arbaz Chaudhary, Ramakrishna Madaka, Beauty Pandey, Daya Shankar, Dipak Kumar Sahoo, D. Jagadeeswara Rao, Jatindra Kumar Rath","doi":"10.1134/S0036024426701682","DOIUrl":"10.1134/S0036024426701682","url":null,"abstract":"<p>Bio-inspired piezoelectric materials have emerged as promising environmentally sustainable alternatives for energy harvesting applications due to their non-toxic, biodegradable, and biocompatible properties. However, achieving high power density and efficient energy conversion in bio-piezoelectric sensors remains a significant challenge. This study investigates the potential of naturally abundant eggshell membrane (ESM), a bio-waste derived material, as a novel piezoelectric material for energy harvesting. The ESM possesses inherent fibrous and porous characteristics that facilitate mechanical-to-electrical energy conversion without requiring complex chemical processing. A bio-piezoelectric sensor (BPS) device was fabricated from ESM and systematically characterized for its electrical performance. Under controlled mechanical stimulation, the fabricated device demonstrated a peak output voltage of 1.56 V, indicating its viability as a cost-effective and sustainable sensing material. These findings demonstrate the potential of repurposing bio-waste materials in the development of environmentally friendly piezoelectric sensors and energy harvesting devices, offering a pathway toward circular economy principles and green electronics.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 9","pages":"2224 - 2230"},"PeriodicalIF":0.7,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878081","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}
T. N. Lugovitskaya, L. M. Danilin, D. I. Golovkin, D. A. Rogozhnikov
{"title":"Surface Activity of Lignosulfonates under Atmospheric Nitric Acid Leaching of Carbonaceous Concentrates","authors":"T. N. Lugovitskaya, L. M. Danilin, D. I. Golovkin, D. A. Rogozhnikov","doi":"10.1134/S0036024426701487","DOIUrl":"10.1134/S0036024426701487","url":null,"abstract":"<p>The interfacial properties of commercial lignosulfonates (LS) at the liquid-gas and liquid-solid interfaces were investigated. The effects of LS concentration (0.02–1.28 g/dm<sup>3</sup>), low-molecular-weight electrolyte additives (HNO<sub>3</sub>, H<sub>2</sub>SO<sub>4</sub>, NaCl, and Na<sub>2</sub>SO<sub>4</sub>), temperature (25–55°C), and pH (1–9) on the surface tension of LS solutions and their adsorption on the surface of a carbonaceous gold-bearing concentrate were established. The addition of electrolytes was shown to cause a further decrease in the surface tension of LS solutions. Adsorption of lignosulfonates on the concentrate is described by S-shaped (Langmuir-type) isotherms; increasing LS concentration (0.005–0.6 mol/dm<sup>3</sup>) and contact time (90–300 min) results in higher adsorption values. The maximum adsorption, Γ<sub>sp</sub> = 1.8 × 10<sup>–2</sup> g/g, is achieved at <i>C</i><sub>LS</sub> ≈ 0.008 mol/ dm<sup>3</sup> and a contact time of 5 h. Based on the temperature dependence, the adsorption activation energy was calculated as <i>E</i><sub>a</sub> = 62.2 kJ/mol, indicating a significant contribution of chemical interaction between LS and the concentrate surface. It was also shown that increasing pH from 1 to slightly acidic and neutral values enhances lignosulfonate adsorption. The results obtained demonstrate the potential of lignosulfonates as surface-active additives for improving the efficiency of hydrometallurgical processing of mineral raw materials.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 9","pages":"2016 - 2024"},"PeriodicalIF":0.7,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878020","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}
P. Kavitha, V. Nijarubini, R. Ganeshamoorthy, R. Menaka
{"title":"Corrosion Protection of Mild Steel in 1 M HCl Using a Chitosan-Based Vanillin Schiff Base: Adsorption and Mechanistic Insights","authors":"P. Kavitha, V. Nijarubini, R. Ganeshamoorthy, R. Menaka","doi":"10.1134/S003602442670161X","DOIUrl":"10.1134/S003602442670161X","url":null,"abstract":"<p>In the present work, eco-friendly chitosan vanillin Schiff base (ChVSB), a biopolymer derivative is reported as an anticorrosive agent for the MS corrosion in 1 M hydrochloric acid medium. The inhibitive action of ChVSB was examined by weight loss experiments at temperature differentials of 303–343 K with concentration range of 100–1500 ppm. The results were promising and the inhibitor showed a better inhibition efficiency of 81% against corrosion. The preliminary information about the anticorrosive shield formed on the metal surface and the complex formation in the solution medium was deduced by UV-visible and atomic absorption spectroscopic studies. The protective nature of the ChVSB on MS surface in acidic medium suggested Temkin adsorption model. Thermodynamic parameters of adsorption revealed the chemisorptive behavior of ChVSB with ∆<i>G</i><sub>ads</sub> more than ‒20 kJ/mol. The surface interaction between ChVSB/metal surface was studied by FTIR and SEM analysis and the results obtained were further supported by theoretical interpretations, in order to study the inhibitive action of ChVSB.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 9","pages":"2159 - 2169"},"PeriodicalIF":0.7,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878024","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}
{"title":"Quality Improvement by Reducing Inclusions in Aluminum 3104 and 8135 Alloys through Deep Bed Filtration (DBF)","authors":"A. Gobidass, Z. Edward Kennedy, R. Maheswari","doi":"10.1134/S0036024426701670","DOIUrl":"10.1134/S0036024426701670","url":null,"abstract":"<p>Aluminum alloys need to meet stringent quality requirements, especially for beverage cans, foils, fine wires, lithographic sheets and bright trims. In fact, inclusions lead to problems when smaller thicknesses sheet has to be produced. The DBF (deep bed filter) consists of an insulated box containing layers of carefully sized alumina balls through which molten aluminum flows from top to bottom. The filtering area or the bed is considered as a function of metal flow rates. A DBF Filter is necessary to produce quality aluminum. The role of the DBF is to remove solid particles from the metal through a simple filtering process. The microstructural analysis demonstrates that the alloy processed using the deep bed filtration (DBF) technique exhibits a significantly lower inclusion content compared to alloys treated with conventional ceramic foam filtration (CFF).</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 9","pages":"2215 - 2223"},"PeriodicalIF":0.7,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878128","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}
A. Asrar Ahamed, Venkatajothi Ramarao, M. Mohamed Mahroop Raja, N. Reehana, K. Vijayalakshmi, N. Sudhan
{"title":"Structural Elucidation, Spectroscopic and In Silico Analysis of Antimicrobial Metabolites Derived from Marine Streptomyces avermitilis KPMS5 Targeting Multidrug Resistant Bacteria","authors":"A. Asrar Ahamed, Venkatajothi Ramarao, M. Mohamed Mahroop Raja, N. Reehana, K. Vijayalakshmi, N. Sudhan","doi":"10.1134/S0036024426701621","DOIUrl":"10.1134/S0036024426701621","url":null,"abstract":"<p>Marine-derived <i>Streptomyces</i> are a promising source of bioactive compounds effective against antibiotic-resistant pathogens. This study aimed to identify antibacterial compounds from marine <i>Streptomyces</i> and evaluate their activity against multidrug-resistant urinary tract bacteria. Marine sediment samples were collected from the Gulf of Mannar, Kayalpatnam, Tamil Nadu, India. <i>Streptomyces</i> isolates were obtained using Actinomycetes Isolation Agar by crowded plate technique. Antibacterial activity was screened against drug-resistant <i>Klebsiella pneumoniae</i> and <i>Staphylococcus</i> <i>aureus</i>. Among ten isolates, <i>Streptomyces</i> <i>avermitilis</i> KPMS5 exhibited the strongest antibacterial activity. Bioactive compounds were extracted and characterized using FT-IR and NMR spectroscopy. The isolate was confirmed by 16S rRNA gene sequencing and deposited in GenBank (KU320674). Molecular docking analysis demonstrated stable binding of the identified compound with the target protein, showing a binding energy of −5.92 kcal/mol and three hydrogen bonds with GLU388 and SER418. These findings indicate the promising inhibitory potential of the compound against drug-resistant urinary pathogens. The study highlights marine <i>Streptomyces</i> as an important source of novel antimicrobial agents. The identified biomolecules may contribute to the development of effective therapies for combating multidrug-resistant urinary tract infections.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 9","pages":"2170 - 2181"},"PeriodicalIF":0.7,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148877979","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}
{"title":"Electrical Conductivity and Thermodynamics of the Process of Ionic Association of Ionic Liquids 1-Alkylpyridinium Bromotrichloroferrates in Acetone","authors":"A. D. Kaftanov, A. A. Arefiev, O. E. Zhuravlev","doi":"10.1134/S0036024426701396","DOIUrl":"10.1134/S0036024426701396","url":null,"abstract":"<p>The electrical conductivity of 1-alkylpyridinium ionic liquids with the bromotrichloroferrate anion in acetone in the temperature range of 298–318 K has been studied. According to the obtained conductometric data, the ion association constants (<i>K</i><sub>a</sub>), the limiting molar electrical conductivities (λ<sub>0</sub>), and the Gibbs energy of association (<span>(Delta G_{{text{a}}}^{0})</span>) in solutions were calculated for the studied compounds by the Lee–Wheaton method. The values of enthalpy (<span>(Delta H_{{text{a}}}^{0})</span>) and entropy (<span>(Delta S_{{text{a}}}^{0})</span>) of association are obtained from the temperature dependence of the equivalent electrical conductivity (EC). The Walden–Pisarzhevsky product was calculated for all the studied compounds. The activation energies (<i>E</i><sub>κ</sub>) of the specific electrical conductivity are calculated. Conclusions are drawn regarding the influence of the structure of 1-alkylpyridinium bromotrichloroferrates on the thermodynamic parameters of association and the activation energy of electrical conductivity in acetone solutions.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 9","pages":"1913 - 1920"},"PeriodicalIF":0.7,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148878079","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}