Russian Journal of Physical Chemistry A最新文献

Photoelectrochemical Oxidation of Ceftriaxone in Aqueous Solutions Using a KrCl Excilamp (222 nm) 利用KrCl Excilamp （222 nm）对头孢曲松水溶液进行光电氧化

IF 0.8 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-03-23 DOI: 10.1134/S0036024425703546

V. S. Tazetdinova, G. G. Matafonova, V. B. Batoev

{"title":"Photoelectrochemical Oxidation of Ceftriaxone in Aqueous Solutions Using a KrCl Excilamp (222 nm)","authors":"V. S. Tazetdinova, G. G. Matafonova, V. B. Batoev","doi":"10.1134/S0036024425703546","DOIUrl":"10.1134/S0036024425703546","url":null,"abstract":"The kinetics of the photoelectrochemical oxidation (PEO) of the antibiotic ceftriaxone (CEF) was studied using a Ti/RuO2–IrO2 anode, a stainless steel cathode, and UV radiation of a KrCl excilamp (222 nm) in deionized water and treated municipal wastewater. In both water matrices, the degradation rates were the highest, with UV irradiation making the predominant contribution. At the first stage of PEO in wastewater, the rate constant is comparable to that found in deionized water due to increased generation of secondary radicals involving the matrix anions. At the second stage, the degradation rate decreases, and electrochemical oxidation (EO) makes a certain contribution. During PEO, mineralization of the total organic carbon (TOC) is higher: 45 and 67% in wastewater and deionized water, respectively. In terms of UV radiation dose, PEO is a more energy-efficient process, the dose required for 90% degradation of CEF in wastewater (20 mJ/cm2) being 3.75 times less of that in deionized water. The results indicate that it is promising to use PEO for efficient degradation and mineralization of bioresistant antibiotics in wastewater aftertreatment processes.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 2","pages":"302 - 307"},"PeriodicalIF":0.8,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147560715","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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Studying the Adsorption of Copper, Zinc, and Cadmium Ions on Native and Modified Montmorillonite-Containing Clay 原生和改性蒙脱石粘土对铜、锌、镉离子的吸附研究

IF 0.8 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-03-23 DOI: 10.1134/S0036024425703522

L. A. Pimneva, A. A. Reshetova

{"title":"Studying the Adsorption of Copper, Zinc, and Cadmium Ions on Native and Modified Montmorillonite-Containing Clay","authors":"L. A. Pimneva, A. A. Reshetova","doi":"10.1134/S0036024425703522","DOIUrl":"10.1134/S0036024425703522","url":null,"abstract":"Results of studying the adsorption of copper(II), zinc(II), and cadmium(II) ions on native and modified montmorillonite clay in the OH form from the Tobolsk district of the Tyumen oblast are described. The studies are conducted using model solutions with concentrations of 0.5–15 mg/mL at a temperature of 298 K. The Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models are used to describe the experimental adsorption isotherms of the studied ions. The constants and parameters of all the equations used are calculated. The determined regression coefficients R2 confirm that the Langmuir model is the best model to describe the experimental adsorption data for Cu+2, Zn+2, and Cd+2 ions. The experimental data with correlation coefficients for the ions are 0.9997 for Cu+2, 0.995 for Zn+2, and 0.9902 for Cd+2. The sorption energy calculated in terms of the Dubinin–Radushkevich model confirms that cadmium and zinc ions undergo physical sorption, while copper ions are sorbed in accordance with the ion-exchange mechanism. The results obtained show that montmorillonite clay modified in the OH form can be used to remove heavy metal ions from water bodies.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 2","pages":"289 - 295"},"PeriodicalIF":0.8,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561142","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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Effects of Boron Concentration and Introduction Method on the Physicochemical and Catalytic Properties of Zeolite ZSM-5 硼浓度及引入方法对ZSM-5沸石理化及催化性能的影响

IF 0.8 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-03-23 DOI: 10.1134/S0036024425703467

L. N. Vosmerikova, A. A. Vosmerikov, E. Yu. Gerasimov, Ya. E. Barbashin, A. V. Vosmerikov

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Influence of Reactant Prehistory on Solid-Phase Synthesis of Magnesia Spinel 反应物史前对镁尖晶石固相合成的影响

IF 0.8 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-03-23 DOI: 10.1134/S0036024425703340

N. V. Filatova, A. S. Artyushin, N. F. Kosenko

{"title":"Influence of Reactant Prehistory on Solid-Phase Synthesis of Magnesia Spinel","authors":"N. V. Filatova, A. S. Artyushin, N. F. Kosenko","doi":"10.1134/S0036024425703340","DOIUrl":"10.1134/S0036024425703340","url":null,"abstract":"The process of magnesia spinel synthesis based on oxides, hydroxides and nitrates of magnesium and aluminum was investigated. As aluminum hydroxide, a reagent in the form of gibbsite and synthesized bayerite was used. The reactivity of precursors was compared using the effective rate constants calculated according to the Ginstling–Brownstein equation. The possibility of using this equation was confirmed by the straightness of dependencies in its coordinates with a high coefficient of linear approximation. Oxide components interacted at a significantly lower rate compared to hydroxides and salts. The effect of preliminary mechanical activation by the impact-attrition and attrition methods in a planetary (PM) and ball-ring mill, respectively, as well as microwave treatment (2.45 GHz) was analyzed. It was found that the most effective combined method consisted of mechanical treatment of Mg and Al nitrates mixture in PM and subsequent burning in a thermal furnace (1200°C), which led to the formation of an almost monophasic product. Microwave processing occupied an intermediate position in terms of effectiveness. The greatest positive effect of PM treatment associated with the activation of Mg and Al compounds revealed itself in the region of relatively low temperatures (1100–1200°C). For example, at a temperature of 1200°C, the magnesia spinel yield in joint impact treatment of oxides was ~2.5 times higher than in simple mixing. With a further increase in temperature, the effect of pretreatment decreased, since under these conditions the diffusion coefficients increased, which ensured a relatively fast reaction even without pretreatment.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 2","pages":"165 - 171"},"PeriodicalIF":0.8,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147560806","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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Extraction of Copper(II) Ions with a Sorbent Based on Cellulose and Sodium Alginate Modified with Guanidine 纤维素-胍修饰海藻酸钠吸附剂对铜离子的萃取

IF 0.8 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-03-23 DOI: 10.1134/S003602442570339X

A. R. Sofronov, T. E. Nikiforova, V. A. Kozlov, P. B. Razgovorov

{"title":"Extraction of Copper(II) Ions with a Sorbent Based on Cellulose and Sodium Alginate Modified with Guanidine","authors":"A. R. Sofronov, T. E. Nikiforova, V. A. Kozlov, P. B. Razgovorov","doi":"10.1134/S003602442570339X","DOIUrl":"10.1134/S003602442570339X","url":null,"abstract":"A new composite sorbent has been developed based on microcrystalline cellulose and sodium alginate modified with guanidine hydrochloride. Modification was performed via the stage of oxidation of polysaccharides with sodium metaperiodate, forming dialdehyde cellulose and sodium dialdehyde alginate, followed by the addition of guanidine amino groups to the aldehyde groups. A comparative analysis of the sorption properties of the modified sorbent containing amino groups with those of microcrystalline cellulose showed that the sorption efficiency of copper ions depends on the nature of sorption sites. When studying the sorption kinetics of Cu(II) cations, it was found that the results of the kinetic experiment are most correctly described within the framework of the pseudo-second-order model. The experimental isotherms of sorption of copper(II) ions from aqueous solutions with the modified sorbent and microcrystalline cellulose are well described by the Langmuir equation. As a result of linearization of isotherms, it was found that the modified sorbent surpasses microcrystalline cellulose in terms of the maximum sorption capacity by approximately an order of magnitude. The changes in the sorption capacity of the developed sorbent compared to the original are due to the appearance of new sorption sites in its structure, which is confirmed by scanning electron microscopy and IR spectroscopy data.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 2","pages":"199 - 206"},"PeriodicalIF":0.8,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561141","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

Sorption of La(III) and Ce(III) Ions on the Monocationic Na and H Forms of Clinoptilolite La（III）和Ce（III）离子在斜沸石单态Na和H形态上的吸附

IF 0.8 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-03-23 DOI: 10.1134/S0036024425703534

F. T. Makhmudov, M. A. Rahimli, Z. A. Jabbarova, Sh. Z. Efendieva, V. H. Alieva

{"title":"Sorption of La(III) and Ce(III) Ions on the Monocationic Na and H Forms of Clinoptilolite","authors":"F. T. Makhmudov, M. A. Rahimli, Z. A. Jabbarova, Sh. Z. Efendieva, V. H. Alieva","doi":"10.1134/S0036024425703534","DOIUrl":"10.1134/S0036024425703534","url":null,"abstract":"Sorption of lanthanum(III) and cerium(III) ions on the Na and H forms of clinoptilolite was studied in wide ranges of time (60 min–48 h) and concentrations (0.01–0.05 N) of La(NO3)3⋅6H2O and CeCl3⋅7H2O solutions. The ion-exchange equilibrium in the system (S : L) on the Na and H forms of clinoptilolite is achieved in 48 and 24 h, respectively. The kinetic (in statics) parameters of ion exchange of Ce(III) and La(III) on the monoforms of clinoptilolite were calculated. An intra-diffusion mechanism of ion exchange was established. The presented isotherms of ion exchange of La(III) and Ce(III) for the Na form of zeolite are convex, and those of the H form have an inflection, which corresponds to the values of the ion exchange constant calculated using the empirical Nikolsky equation (at K > 1 they are convex; at K < 1, concave). The effect of pH of the medium on the sorption capacity of zeolites in the monoforms relative to the triply charged REE cations, in particular, La(III) and Ce(III), was revealed.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 2","pages":"296 - 301"},"PeriodicalIF":0.8,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561225","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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Thermochemistry of Framework Zirconium Phosphates A2Zr1.5Mg0.5(PO4)3 (A = K, Rb, Cs) with a Langbeinite Structure 朗贝氏体结构框架磷酸锆A2Zr1.5Mg0.5(PO4)3 （A = K, Rb, Cs）的热化学性质

IF 0.8 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-03-23 DOI: 10.1134/S003602442570342X

A. K. Korytseva, A. V. Knyazev, V. E. Popov, I. A. Bazhenova, V. V. Cheverikin

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Preparation of a TiO2/Diatomite Composite by Hydrothermal Impregnation of a Mechanically Activated Matrix with a Solution of Titanium Polyhydroxocomplexes 钛多羟基配合物水热浸渍机械活化基质制备TiO2/硅藻土复合材料

IF 0.8 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-03-23 DOI: 10.1134/S0036024425703352

N. L. Ovchinnikov, N. E. Kochkina, M. F. Butman, N. E. Gordina

{"title":"Preparation of a TiO2/Diatomite Composite by Hydrothermal Impregnation of a Mechanically Activated Matrix with a Solution of Titanium Polyhydroxocomplexes","authors":"N. L. Ovchinnikov, N. E. Kochkina, M. F. Butman, N. E. Gordina","doi":"10.1134/S0036024425703352","DOIUrl":"10.1134/S0036024425703352","url":null,"abstract":"A composite material based on titanium dioxide and diatomite, possessing high photocatalytic activity, was obtained using solutions with high concentrations of titanium polyhydroxocomplexes under mild hydrothermal conditions at a temperature of 115°C and a pressure of 170 kPa for 0.5, 1, and 5 h. The starting diatomite was pre-processed mechanically by grinding it in a mortar and milling in a planetary mill with zirconium grinding media for 3 min (rotor speed 1500 rpm). The materials were characterized by X-ray diffraction analysis, IR spectroscopy, scanning electron microscopy, energy-dispersive microanalysis, low-temperature nitrogen adsorption-desorption, and static light scattering. The different types of mechanical processing of the starting diatomite had a significant effect on primary crystallization in the autoclave, which changed the surface morphology and the phase ratio of TiO2–anatase and rutile in the composite while varying the hydrothermal treatment time. The composites are characterized by higher textural parameters of the mesoporous structure and significantly higher positive values of the ζ potential compared to those of the starting diatomite. The photocatalytic properties of the composites were studied using the model dye of the cationic type rhodamine B (RhB) as an example. For composites with the highest photoactivity, the degree of RhB decomposition under UV radiation (250 W, 365 nm) was ~95% after 1 h of irradiation for an RhB solution with a concentration of 20 mg L–1 at a photocatalyst load of 1 g L–1.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 2","pages":"172 - 179"},"PeriodicalIF":0.8,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147560714","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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Effects of Reagent Solvation on the Stability of the Coordination Compounds of Silver(I) with 18-Crown-6 Ether in Mixed Methanol–Acetonitrile Solvents 试剂溶剂化对银(I) - 18-冠-6醚配位化合物在甲醇-乙腈混合溶剂中稳定性的影响

IF 0.8 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-03-23 DOI: 10.1134/S0036024425703443

I. A. Kuz’mina, M. A. Kovanova

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Electrical Conductivity of Tetrabutylammonium Bromide, Sodium Tetraphenylborate, and Sodium Bromide in the Presence of Dimethyl Sulfoxide + Water Mixtures at Different Temperatures (298.15, 303.15, 308.15, and 313.15) K 四丁基溴化铵、四苯基硼酸钠和溴化钠在不同温度（298.15、303.15、308.15和313.15）K下二甲亚砜+水混合物存在下的电导率

IF 0.8 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-03-23 DOI: 10.1134/S0036024425703480

Ambika Sharma, Ramesh Sharma, Chanchal Das

{"title":"Electrical Conductivity of Tetrabutylammonium Bromide, Sodium Tetraphenylborate, and Sodium Bromide in the Presence of Dimethyl Sulfoxide + Water Mixtures at Different Temperatures (298.15, 303.15, 308.15, and 313.15) K","authors":"Ambika Sharma, Ramesh Sharma, Chanchal Das","doi":"10.1134/S0036024425703480","DOIUrl":"10.1134/S0036024425703480","url":null,"abstract":"At (298.15, 303.15, 308.15, and 313.15) K, electrical conductances of the salts, namely, tetrabutylammonium bromide (Bu4NBr), sodium tetraphenylborate (NaBPh4), and sodium bromide (NaBr) in dimethyl sulfoxide (DMSO) + water (H2O) mixed solvent media with 0.10, 0.20, 0.30, and 0.40 mass fractions of DMSO were obtained. The 1978 Fuoss equation was used to analyze the experimental conductance data. The “reference electrolyte” tetrabutylammonium tertraphenylborate (Bu4NBPh4) was used to estimate the limiting ionic conductances. Our analysis found that all three electrolytes predominantly occur as free ions in solvent mixes at 298.15–313.15 K. The electrolyte association constant does not show noteworthy changes as the temperature varies. However, the electrolytes’ limiting molar conductances and single-ion conductivity values rise noticeably with the increase in temperature. A deviation form ideal behavior for Walden products of these salts were observed when the temperature or solvent composition were changed.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 2","pages":"251 - 261"},"PeriodicalIF":0.8,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147560801","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