Russian Journal of Physical Chemistry A最新文献_第9页

Adsorption of 4-Amino-3,5,6-Trichloropyridine-2-Carboxylic Acid on a Microporous Activated Carbon Sample 微孔活性炭对4-氨基-3,5,6-三氯吡啶-2-羧酸的吸附

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-08-25 DOI: 10.1134/S0036024426701037

S. A. Bulkin, M. D. Vedenyapina, L. R. Sharifullina, A. A. Laptev

引用次数: 0

Studies of Molecular Interactions in Binary Liquid Mixtures (Pyridine with Diethylamine, Dipropylamine, and Dibutylamine) by Employing Thermodynamic Properties at Varying Temperatures 利用不同温度下的热力学性质研究二元液体混合物（吡啶与二乙胺、二丙胺和二丁胺）中的分子相互作用

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Russian Journal of Physical Chemistry A Pub Date : 2026-08-25 DOI: 10.1134/S0036024426700871

Razia Shamshad Begum, Donthula Sumalatha, Setti Rajani, Jagadeesh Kumar Ega

{"title":"Studies of Molecular Interactions in Binary Liquid Mixtures (Pyridine with Diethylamine, Dipropylamine, and Dibutylamine) by Employing Thermodynamic Properties at Varying Temperatures","authors":"Razia Shamshad Begum, Donthula Sumalatha, Setti Rajani, Jagadeesh Kumar Ega","doi":"10.1134/S0036024426700871","DOIUrl":"10.1134/S0036024426700871","url":null,"abstract":"This work examined the development of new molecular interactions in liquid mixtures of pyridine with dialkylamines (diethylamine, dipropylamine, and dibutylamine). In order to do this, measurements of the density and speed of sound of these liquids and their binary mixtures have been made at atmospheric pressure and temperatures 298.15, 303.15, and 308.15 K. Using observed data, thermodynamic properties such as excess molar volume, apparent molar volume, isentropic compressibility, and excess molar isentropic compressibility were determined. Further, the measured speed of sound was compared to the speed of sound using Jacobson’s free length theory and Schaff’s collision factor theory. Moreover, the Redlich–Kister polynomial is used to verify the computed excess molar volume and excess molar isentropic compressibility. The (V_{{text{m}}}^{{text{E}}}) and (k_{{{text{s}}{text{,m}}}}^{{text{E}}}~) for the examined binary liquid systems deviate negatively from the ideal axis. Additionally, the thermophysical parameters data for the systems indicated above were analyzed using the Jouyban–Acree (J–A) model.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 7","pages":"1366 - 1381"},"PeriodicalIF":0.7,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148811008","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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Low-Temperature Thermodynamic Properties of LiNa5Mo9O30 Single Crystal LiNa5Mo9O30单晶低温热力学性质研究

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Russian Journal of Physical Chemistry A Pub Date : 2026-08-25 DOI: 10.1134/S0036024426701098

M. A. Bespyatov, D. S. Shevelev, N. A. Khokhlov, T. M. Kuzin, A. A. Nazarova, N. V. Gelfond

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Plasmonic Au/TiO2 Nanocatalyst for Selective CO2-to-CO Conversion at Low Temperature 等离子体Au/TiO2纳米催化剂的低温选择性co2 - co转化

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-08-25 DOI: 10.1134/S0036024426601783

Debadutta Patra

{"title":"Plasmonic Au/TiO2 Nanocatalyst for Selective CO2-to-CO Conversion at Low Temperature","authors":"Debadutta Patra","doi":"10.1134/S0036024426601783","DOIUrl":"10.1134/S0036024426601783","url":null,"abstract":"Plasmonic Au/TiO2 nanostructures were designed, synthesized by NaBH4 chemical reduction followed by calcination at 350°C, and evaluated for the photocatalytic selective reduction of CO2 to CO under visible-light illumination at sub-100°C conditions. Comprehensive structural and optical characterization (XRD, FESEM, TEM, UV–Vis, FTIR, PL) confirmed the formation of well-dispersed face-centered cubic Au nanoparticles (8.2 ± 1.4 nm) on anatase TiO2 (P25, 45 ± 6 nm) with a distinct localized surface plasmon resonance (LSPR) band at 535 nm. Under standardized reaction conditions (50 mg catalyst, CO2 : H2 = 1 : 1 (v/v), total pressure ~1 atm, total flow 40 mL min–1, 300 W Xe lamp with λ ≥ 420 nm cut-off filter, irradiance ~100 mW cm–2, T = 80 ± 2°C), the catalyst achieved a CO2 conversion of 2.05 ± 0.10% at 60 min, a CO selectivity of 94.5 ± 1.2%, a CO production rate of 75 ± 3 µmol g–1 h–1, a turnover frequency (TOF) of 4.0 × 10‒4 s–1 per mole of surface Au, and an apparent quantum yield of 0.38 ± 0.04% at 550 nm. Control experiments—dark reaction (<1 µmol g–1 CO after 60 min), bare TiO2 under light (~3 µmol g–1 CO after 60 min), and no-H2 run (~2 µmol g–1 CO after 60 min)—collectively demonstrate that visible light, Au LSPR, and H2 are all required. Photoluminescence (PL) spectroscopy shows significant quenching of the TiO2 emission upon Au loading, consistent with plasmon-induced hot-electron injection from Au into the TiO2 conduction band. The catalyst retained ~89% of its initial activity after five consecutive cycles. The performance benchmarking against published Au/TiO2 and related CO2-to-CO photocatalysts demonstrates the competitive low-temperature operation of the present system.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 8","pages":"1721 - 1733"},"PeriodicalIF":0.7,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148811070","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

Bio-Glycerol and Water Mixture Based SiO2 Nanofluids—A Potential Heat Transfer Fluid for Thermal and Biomass Conversion Systems 基于二氧化硅的生物甘油和水混合物纳米流体——一种用于热能和生物质转化系统的潜在传热流体

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-08-25 DOI: 10.1134/S0036024426701220

T. Rajendra Prasad, K. Rama Krishna, K. V. Sharma, Pankaj Pathak

{"title":"Bio-Glycerol and Water Mixture Based SiO2 Nanofluids—A Potential Heat Transfer Fluid for Thermal and Biomass Conversion Systems","authors":"T. Rajendra Prasad, K. Rama Krishna, K. V. Sharma, Pankaj Pathak","doi":"10.1134/S0036024426701220","DOIUrl":"10.1134/S0036024426701220","url":null,"abstract":"Saving energy in energy conversion devices is one of the main requirements in the current global energy situation. One potential answer to this issue could be the miniaturization of energy conversion machinery. To achieve this, the equipment’s fluids utilized for energy transfer may have their heat transfer rates increased. To improve the thermal fluid’s heat transmission rates, the researchers presented a variety of alternatives. The fluid’s thermal characteristics can be altered by scattering solid nano-additives to increase thermal conductivity. Such fluids are termed as “nanofluids.” Because of their poor dispersal steadiness, nanofluids are challenging to use in practical applications. The current work presents the idyllic bio-glycerol and water (GW) mixture ratio discovery as base fluid to perk up the steadiness of the nanofluid. A range of silica (SiO2) nanofluids concentrations are created and stabilized using physical and chemical processes. The thermal conductivity (k) of SiO2 nanofluids was examined, and the outcomes were presented. According to the study’s findings, SiO2 nanofluids that were prepared were a viable energy transfer fluid for applications including biomass conversion and thermal energy conversion.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 8","pages":"1734 - 1741"},"PeriodicalIF":0.7,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148811080","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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Thermochemical Study of Acid–Base Interaction Reactions in an Aqueous Guanine Solution 鸟嘌呤水溶液中酸碱相互作用的热化学研究

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-08-25 DOI: 10.1134/S0036024426700822

O. N. Krutova, P. D. Krutov, M. I. Bazanov, V. V. Chernikov, E. E. Kiptikova, E. A. Kasatkin

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Densities and Viscosities of Binary Mixtures of Cyclohexene Oxide with 1-Butanol, 1-Pentanol, 1-Hexanol, and 1-Heptanol from 298.15 to 313.15 K 298.15 ~ 313.15 K范围内环氧环己烯与1-丁醇、1-戊醇、1-己醇和1-庚醇二元混合物的密度和粘度

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Russian Journal of Physical Chemistry A Pub Date : 2026-08-25 DOI: 10.1134/S003602442670086X

Xiaoru Pan, Xiangyan Kong, Dan Li

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Mechanochemical Synthesis of Sodium Acetylsalicylate Hemihydrate 2 : 1 and Kinetic Study of Its Formation 半水合乙酰水杨酸钠2:1的机械化学合成及其形成动力学研究

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-08-25 DOI: 10.1134/S0036024426701116

E. A. Losev, E. V. Boldyreva

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First Passage Time for a Particle Diffusing in Porous Nanostructure 多孔纳米结构中粒子扩散的首次通过时间

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Russian Journal of Physical Chemistry A Pub Date : 2026-08-25 DOI: 10.1134/S0036024426700950

A. O. Erkimbaev, V. Yu. Zitserman

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Electrochemical Insertion of Lithium into Silicon Electrodes Prepared by Electron-Beam Deposition 电子束沉积法制备硅电极中锂的电化学插入

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-08-25 DOI: 10.1134/S0036024426701323

A. A. Maksimkin, T. L. Kulova, A. M. Skundin, O. S. Trushin, I. S. Fattahov, L. A. Mazaletskiy

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