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Russian Journal of Physical Chemistry A最新文献

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Synthesis and Characterization of Hierarchical Nest-Like Sm-Doped Bi2WO6 Microstructure Used As a Visible-Light-Driven Photocatalyst 层状巢状sm掺杂Bi2WO6微观结构的合成与表征
IF 0.8 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-09-16 DOI: 10.1134/S0036024425701614
Amarin Salaeh, Anukorn Phuruangrat, Asanee Somdee, Titipun Thongtem, Somchai Thongtem
{"title":"Synthesis and Characterization of Hierarchical Nest-Like Sm-Doped Bi2WO6 Microstructure Used As a Visible-Light-Driven Photocatalyst","authors":"Amarin Salaeh,&nbsp;Anukorn Phuruangrat,&nbsp;Asanee Somdee,&nbsp;Titipun Thongtem,&nbsp;Somchai Thongtem","doi":"10.1134/S0036024425701614","DOIUrl":"10.1134/S0036024425701614","url":null,"abstract":"<p>The hierarchical nest-like Sm-doped Bi<sub>2</sub>WO<sub>6</sub> samples were successfully synthesized by a simple hydrothermal method at 180°C for 20 h. They were used as a visible-light-driven photocatalyst for rhodamine B (RhB) degradation. XRD patterns of Bi<sub>2</sub>WO<sub>6</sub> doped with different weight contents of Sm were similar with that of the pure orthorhombic Bi<sub>2</sub>WO<sub>6</sub> phase. The electron microscopic analyses show that the products were uniform hierarchical nest-like microstructure of nanoplates. The nanoplates of the doped samples were less than those of the un-doped one. Upon being doped with Sm, the specific surface area of Bi<sub>2</sub>WO<sub>6</sub> was increased with more active sites for photocatalytic reaction. The Sm dopant also favors the visible light harvest and enhances the photocatalytic performance of the doped product. The hierarchical nest-like 2% Sm-doped Bi<sub>2</sub>WO<sub>6</sub> microstructure has the best photocatalytic activity for the degradation of RhB of 98.08% within 180 min. In this research, h<sup>+</sup> and <span>({}^{ bullet }{text{O}}_{2}^{ - })</span> were the main active species used for the degradation of RhB and the photocatalytic mechanism of Sm-doped Bi<sub>2</sub>WO<sub>6</sub> was proposed.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 9","pages":"2159 - 2170"},"PeriodicalIF":0.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073800","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}
引用次数: 0
Effect of Preliminary Mechanoactivation on Structural Changes in Phosphogypsum and the Sulfuric Acid Leaching of Rare Earth Elements from It 初步机械活化对磷石膏结构变化及硫酸浸出稀土元素的影响
IF 0.8 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-09-16 DOI: 10.1134/S0036024425701547
S. V. Kirillov, E. V. Kirillov, G. M. Bunkov, A. S. Malyshev, M. S. Botalov, V. S. Semenishchev
{"title":"Effect of Preliminary Mechanoactivation on Structural Changes in Phosphogypsum and the Sulfuric Acid Leaching of Rare Earth Elements from It","authors":"S. V. Kirillov,&nbsp;E. V. Kirillov,&nbsp;G. M. Bunkov,&nbsp;A. S. Malyshev,&nbsp;M. S. Botalov,&nbsp;V. S. Semenishchev","doi":"10.1134/S0036024425701547","DOIUrl":"10.1134/S0036024425701547","url":null,"abstract":"<p>Mechanical activation has a noticeable effect on the properties of phosphogypsum (PG) and the efficiency of extracting rare earth elements (REE) from it. Samples of phosphogypsum retain their crystallinity in the wet mode of bead-type activators. The increased leaching of REE from activated phosphogypsum is due to a rise in different structural disturbances of its crystal lattice, the total effect of which is microdistortions caused by stresses of the first and third kind. Studies of the kinetics of leaching lanthanides from activated samples show that the rate of the process is limited by their internal diffusion. The calculated amount of energy absorbed by the FG sample after mechanical activation is 6.61 kJ/mol.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 9","pages":"2096 - 2106"},"PeriodicalIF":0.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073811","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}
引用次数: 0
Thermodynamic Characteristics of L-Lysine Complexation with Pyridine Monocarboxylic Acid Isomers in Aqueous Solution l -赖氨酸与吡啶一元羧酸异构体在水溶液中络合的热力学特征
IF 0.8 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-09-16 DOI: 10.1134/S0036024425701511
E. Yu. Tyunina, I. N. Mezhevoi
{"title":"Thermodynamic Characteristics of L-Lysine Complexation with Pyridine Monocarboxylic Acid Isomers in Aqueous Solution","authors":"E. Yu. Tyunina,&nbsp;I. N. Mezhevoi","doi":"10.1134/S0036024425701511","DOIUrl":"10.1134/S0036024425701511","url":null,"abstract":"<p>The interactions of the polar basic amino acid L-lysine (Lys) with the structural isomers of pyridine monocarboxylic acid: picolinic (PA), nicotinic (NA), and isonicotinic (INA) acids in aqueous solution were studied by solution calorimetry at 298.15 K. The experimental data allowed us to establish the formation of 1 : 1 complexes of Lys with the indicated isomers. The thermodynamic parameters were determined: binding constants, enthalpies of complexation, Gibbs energies, and entropies. The stability of the obtained complexes depends on the structural isomerism of pyridine carboxylic acid and increases in the series: PA &lt; NA &lt; INA. The main contribution to the stabilization of the complexes is from the enthalpy component of the Gibbs free energy of complexation.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 9","pages":"2067 - 2073"},"PeriodicalIF":0.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073818","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}
引用次数: 0
Hygroscopic Properties of Industrial Aluminum Powders 工业铝粉的吸湿性能
IF 0.8 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-09-16 DOI: 10.1134/S0036024425701468
A. G. Tereshchenko
{"title":"Hygroscopic Properties of Industrial Aluminum Powders","authors":"A. G. Tereshchenko","doi":"10.1134/S0036024425701468","DOIUrl":"10.1134/S0036024425701468","url":null,"abstract":"<p>Isotherms of the sorption of water vapor by aluminum powders of different grades (ASD-4, ASD‑6, PA-2, PA-4, PAD-2, PAD-4, PAP-1, and PAP-2) are determined experimentally. The sorption of water vapor with ASD, PA, PAD powders begins at humidities above 80%. The kinetics of the chemical reaction between water vapor and aluminum is characterized by an induction period whose duration depends on the grade of aluminum and the relative humidity of the air. A mechanism is proposed for the reaction between water vapor and aluminum powders, in which an important role is played by atomic hydrogen that is released in the main reaction and participates in a chemical reaction that destroys the oxide-hydroxide protective film on the granules of aluminum powders. The hygroscopicity of PAP powders is determined from the absorption of water vapor by the fatty film, and not by the aluminum itself.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 9","pages":"2022 - 2026"},"PeriodicalIF":0.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073797","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}
引用次数: 0
Theoretical Investigation of the Physical Features of Ternary (Emplectite) CuBiS2 and (Chalcostibite) CuSbS2: Photovoltaic Applications 三元（贫晶）cubs2和（辉长岩）CuSbS2物理特性的理论研究：光伏应用
IF 0.8 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-09-16 DOI: 10.1134/S0036024425701560
Y. Megdoud, L. Tairi, R. Menaceur, S. Ghemid, H. Meradji, S. Ugur, Devraj Singh, R. Khenata
{"title":"Theoretical Investigation of the Physical Features of Ternary (Emplectite) CuBiS2 and (Chalcostibite) CuSbS2: Photovoltaic Applications","authors":"Y. Megdoud,&nbsp;L. Tairi,&nbsp;R. Menaceur,&nbsp;S. Ghemid,&nbsp;H. Meradji,&nbsp;S. Ugur,&nbsp;Devraj Singh,&nbsp;R. Khenata","doi":"10.1134/S0036024425701560","DOIUrl":"10.1134/S0036024425701560","url":null,"abstract":"<p>First-principles evaluations were done to scrutinize the structural, electronic, and optical features of CuBiS<sub>2</sub> and CuSbS<sub>2</sub> ternary alloys. These calculations utilized the FP-LAPW (full potential-linearized augmented plane wave) technique within the framework of the DFT (density functional theory). To accurately model the exchange-correlation potential in total energy computations, the WC-GGA (Wu-Cohen generalized gradient approximation) was employed. For the band structure computations, the improved Becke–Johnson potential approximation has been utilized, which effectively addresses the band-gap underestimation typically seen in standard DFT approaches. The results showed that the calculated lattice constants and band-gap values of these ternary compounds closely match existing theoretical and experimental data. Furthermore, to explore the optical features of emplectite and chalcostibite, calculations were performed for refractive index, the reflectivity, dielectric function and absorption coefficient. The findings from the electronic and optical properties suggest that these ternary compounds could be highly beneficial for applications in photonics and photovoltaics, owing to their favourable characteristics.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 9","pages":"2115 - 2126"},"PeriodicalIF":0.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073704","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}
引用次数: 0
Correlations for the Temperature Dependent Viscosity of Saturated Liquids 饱和液体粘度随温度变化的相关性
IF 0.8 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-09-16 DOI: 10.1134/S0036024425701456
Cuihua Zhang, Xiaobing Liu, Jianxiang Tian, Shangguo Yang, Hua Jiang
{"title":"Correlations for the Temperature Dependent Viscosity of Saturated Liquids","authors":"Cuihua Zhang,&nbsp;Xiaobing Liu,&nbsp;Jianxiang Tian,&nbsp;Shangguo Yang,&nbsp;Hua Jiang","doi":"10.1134/S0036024425701456","DOIUrl":"10.1134/S0036024425701456","url":null,"abstract":"<p>The Arrhenius correlation, the Vogel–Fulcher–Tamman correlation and a four-parameter correlation for the temperature dependent viscosity are compared and checked for saturated liquids by using the viscosity data in the NIST database. 52 substances including hydrocarbons, refrigerants, and some others are considered. By comparing the calculated numerical results from the three correlations with the data from the NIST database, it is found that the four-parameter correlation can predict the NIST data with average absolute deviation (AAD) less than 5% for all the 52 liquids, AAD less than 1% for 39 liquids. Better accuracy of the four-parameter correlation compared to the Arrhenius correlation and the Vogel–Fulcher–Tamman correlation is found.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 9","pages":"2012 - 2021"},"PeriodicalIF":0.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073705","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}
引用次数: 0
Adsorption of New Reagent Collector 4-(1-Naphthylazo)Naphthol-1 on Chalcopyrite 新型捕收剂4-（1-萘基偶氮）萘酚-1对黄铜矿的吸附
IF 0.8 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-09-16 DOI: 10.1134/S0036024425701651
V. O. Gogolishvili, V. Yu. Gusev
{"title":"Adsorption of New Reagent Collector 4-(1-Naphthylazo)Naphthol-1 on Chalcopyrite","authors":"V. O. Gogolishvili,&nbsp;V. Yu. Gusev","doi":"10.1134/S0036024425701651","DOIUrl":"10.1134/S0036024425701651","url":null,"abstract":"<p>Results are presented from studying the adsorption of potential reagent collector 4-(1-naphthylazo)naphthol-1 on chalcopyrite, a monomineral that is a part of copper–nickel sulfide ore. The dependence of adsorption on the pH of the solution has been determined, along with the kinetic and thermodynamic parameters of adsorption at 296, 299, 302, 305, and 315 K. The rate constants of reagent adsorption on chalcopyrite have been calculated for pseudo-first and pseudo-second order equations. Adsorption isotherms at all studied temperatures have been constructed in the coordinates of the Langmuir and Freundlich equations, and the constants of each model have been determined. Changes in enthalpy, entropy, and the Gibbs free energy have been calculated using Langmuir adsorption constants for different temperatures. The obtained values of thermal effects show that the adsorption of 4-(1-naphthylazo)naphthol-1 on the surface of chalcopyrite is due mainly to chemisorption. Positive enthalpy and negative Gibbs energies indicate endothermic and spontaneous adsorption. The contact angles of wetting on the surface of chalcopyrite have been determined before and after treating it with a solution of 4-(1-naphthylazo)naphthol-1. It was established that the reagent had the highest hydrophobic capacity for chalcopyrite at pH 10.0.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 9","pages":"2219 - 2225"},"PeriodicalIF":0.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073801","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}
引用次数: 0
Stability of Cadmium(II) Glycylglycinate Complexes in Aqueous Dimethyl Sulfoxide Solutions 镉（II）甘氨酸配合物在二甲基亚砜水溶液中的稳定性
IF 0.8 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-09-16 DOI: 10.1134/S0036024425701493
V. A. Isaeva, O. A. Bezrukova
{"title":"Stability of Cadmium(II) Glycylglycinate Complexes in Aqueous Dimethyl Sulfoxide Solutions","authors":"V. A. Isaeva,&nbsp;O. A. Bezrukova","doi":"10.1134/S0036024425701493","DOIUrl":"10.1134/S0036024425701493","url":null,"abstract":"<p>The stability constants of cadmium(II) complexes with the glycylglycine anion in aqueous dimethyl sulfoxide solutions were determined by potentiometric titration at 298 K and an ionic strength of solutions of 0.1 M. The stability of cadmium(II) glycylglycinates increased at increased concentrations of dimethyl sulfoxide in solution. Using our own and literature data, the Gibbs energies of the transfer of cadmium(II) glycylglycinate complexes from water to the water–dimethyl sulfoxide solvent were calculated, and the contribution of reagent resolvation to the change in the Gibbs energy of the reaction of formation of complex particles was considered. The increased stability of the cadmium(II) glycylglycinate complex in aqueous dimethyl sulfoxide solutions is mainly determined by the weakening of the solvation state of the ligand.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 9","pages":"2052 - 2058"},"PeriodicalIF":0.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073699","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}
引用次数: 0
Chemical Equilibria in the Heterogeneous Region of Compositions of Acetic Acid–n-Butyl Alcohol–n-Butyl Acetate–Water System at 298.15 K and Atmospheric Pressure 298.15 K和大气压下乙酸-正丁醇-正乙酸丁酯-水体系组成非均相区化学平衡
IF 0.8 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-09-16 DOI: 10.1134/S003602442570150X
M. A. Toikka, A. A. Smirnov, G. H. Misikov, A. M. Toikka
{"title":"Chemical Equilibria in the Heterogeneous Region of Compositions of Acetic Acid–n-Butyl Alcohol–n-Butyl Acetate–Water System at 298.15 K and Atmospheric Pressure","authors":"M. A. Toikka,&nbsp;A. A. Smirnov,&nbsp;G. H. Misikov,&nbsp;A. M. Toikka","doi":"10.1134/S003602442570150X","DOIUrl":"10.1134/S003602442570150X","url":null,"abstract":"<p>A study is performed of the compositions of coexisting phases in a state of chemical equilibrium at a temperature of 298.15 K and atmospheric pressure. The object of study is an acetic acid–<i>n-</i>butyl alcohol–<i>n-</i>butyl acetate–water system. Esterification/hydrolysis is carried out using a catalyst (hydrochloric acid). All results are presented in the corresponding concentration spaces. For greater clarity of the resulting data, the compositions of chemically nonequilibrium phases are given in squares of the concentration α-variables. A comparative analysis is performed of the results. A correlation of experimental data using the NRTL model shows satisfactory agreement between the calculated compositions and experimental values.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 9","pages":"2059 - 2066"},"PeriodicalIF":0.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073706","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}
引用次数: 0
Using Integral Relations to Estimate Parameters of Microwave Resonator Plasma during the Formation of an Alloying Delta Layer in Diamond 用积分关系估计金刚石合金三角洲层形成过程中微波谐振体参数
IF 0.8 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-09-16 DOI: 10.1134/S0036024425701602
N. I. Alekseev, A. P. Broiko, I. V. Oreshko
{"title":"Using Integral Relations to Estimate Parameters of Microwave Resonator Plasma during the Formation of an Alloying Delta Layer in Diamond","authors":"N. I. Alekseev,&nbsp;A. P. Broiko,&nbsp;I. V. Oreshko","doi":"10.1134/S0036024425701602","DOIUrl":"10.1134/S0036024425701602","url":null,"abstract":"<p>The authors consider the possibility of combining TM and TE modes in a microwave plasma resonator for growing diamond with a <i>p</i>-type doped δ-layer (boron) and the minimum possible thickness in CVD. A model based on integral relations allows us to estimate the parameters of the emerging plasma ball, along with the position of the substrate carrying the diamond growth surface relative to the plasma ball, and the dependence of this position on the gas pressure, particularly the preference for the low pressure mode (not calculated in applied plasma packages) for better adhesion of the ball to the substrate.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 9","pages":"2148 - 2158"},"PeriodicalIF":0.8,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073799","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}
引用次数: 0
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