Russian Journal of Physical Chemistry A最新文献_第3页

Preparation and Research Progress of CoNi/C Composite Electromagnetic Wave Absorbing Materials CoNi/C复合电磁波吸波材料的制备及研究进展

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-10-05 DOI: 10.1134/S003602442660265X

Fei Yan, Zijian Jing, Xiaorui Liu, Yang Chen

{"title":"Preparation and Research Progress of CoNi/C Composite Electromagnetic Wave Absorbing Materials","authors":"Fei Yan, Zijian Jing, Xiaorui Liu, Yang Chen","doi":"10.1134/S003602442660265X","DOIUrl":"10.1134/S003602442660265X","url":null,"abstract":"With the rapid advancement of wireless communication technologies, electromagnetic pollution and interference have intensified significantly, posing a serious threat to human health, the safety of electronic devices, and military information security. Consequently, the development of high-performance electromagnetic wave absorbing materials with the characteristics of “thin thickness, wide bandwidth, light weight, and strong absorption” has become a hot topic in the field of materials science. Among the numerous candidate materials, the electromagnetic wave absorbing materials composed of magnetic metals (especially cobalt (Co) and nickel (Ni)) and carbon matrix have shown great application potential due to their adjustable electromagnetic parameters, low density, good chemical stability, and the ability to optimize impedance matching and attenuation characteristics through the synergistic effect. This paper aims to systematically and deeply sort out and analyze the performance regulation strategies and preparation methods of CoNi/C composite electromagnetic wave absorbing materials, providing a systematic strategy for their future preparation and regulation, and looking forward to the future research direction of the materials.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 10","pages":"2503 - 2541"},"PeriodicalIF":0.7,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098123","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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Physicochemical Properties of ABiNb2O7 (A = Cs, Rb) Oxides ABiNb2O7 （A = Cs, Rb）氧化物的物理化学性质

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-10-05 DOI: 10.1134/S0036024426701864

I. A. Zvereva, S. A. Kurnosenko, S. A. Chernyaev, S. A. Kocherova, I. A. Zhuravlev, O. I. Silyukov

引用次数: 0

Preparation of Ce-UiO-66-NH2/TiO2/PANI Composite and Photocatalytic Degradation of RhB Ce-UiO-66-NH2/TiO2/PANI复合材料的制备及光催化降解RhB

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-10-05 DOI: 10.1134/S0036024426602624

Lili Li, Jiaxin Li, Yuyu Ma, Jing Shu

引用次数: 0

Synthesis, Physicochemical, and Rheological Evaluation of Cellulose-Based Stimuli-Sensitive Polymer Microgels 纤维素基刺激敏感聚合物微凝胶的合成、物理化学和流变学评价

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-10-05 DOI: 10.1134/S0036024426602673

Sumayya Naz, Abbas Khan, Majid Khan, Mohamed Bououdina, Muhammad Humayun, Luqman Ali Shah, Sabiha Sultana

{"title":"Synthesis, Physicochemical, and Rheological Evaluation of Cellulose-Based Stimuli-Sensitive Polymer Microgels","authors":"Sumayya Naz, Abbas Khan, Majid Khan, Mohamed Bououdina, Muhammad Humayun, Luqman Ali Shah, Sabiha Sultana","doi":"10.1134/S0036024426602673","DOIUrl":"10.1134/S0036024426602673","url":null,"abstract":"Different samples of PNIPAAm–cellulose–PMAA based microgel were prepared via free-radical polymerization approach under an inert atmosphere. All samples were synthesized using the same precursors: cellulose, N-isopropylacryl amide (NIPAAm), methylene bisacrylamide (MBA) as a cross-linker, methacrylic acid (MAA), and ammonium persulphate (APS) functioning as polymerization initiating agent. However, the amount of reacting species was varied during different formulations. The synthesized microgel samples were thoroughly purified and subjected to a comprehensive suite of characterization techniques, including spectroscopic, rheological, dynamic light scattering (DLS), thermogravimetric analysis (TGA), and some fundamental physiological approaches. Spectroscopic analysis confirmed the successful fabrication of desired polymeric microgels. The storage modulus (G') and loss modulus (G'') of all samples remained constant across the range of angular frequencies tested. Analysis of damping factor ((tan delta ) = G ''/G ') demonstrated that the microgel with a value less than 1 behaved elastic nature, whereas those having a value greater than 1 were highly viscous in nature. The viscosity and shear stress were found dependent on applied shear rates and temperatures. Owing to the thermoresponsive nature of NIPAAm, the gel exhibited lower shear stress rate below its lower critical solution temperature (LCST), while increased hydrophobicity above 30°C led to higher deformation resistance. Light scattering analysis revealed stable hydrodynamic size and dispersion below the pKa (pH) of MAA across varying temperature. TGA further confirmed the thermal robustness and defined the degradation pattern of the microgel samples. The results indicated that the desired and tunable stimuli-responsive behavior could be effectively modulated by adjusting the feed composition.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 10","pages":"2419 - 2433"},"PeriodicalIF":0.7,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098267","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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Thermodynamic Study on the Protonation and Complexation Epinephrine with Mg(II) in Mixed Solvent System and Various Ionic Strengths 不同离子强度下混合溶剂体系中肾上腺素与Mg（II）质子化络合的热力学研究

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-10-05 DOI: 10.1134/S0036024425600618

A. Bagheri Gh., M. Pejman

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Boosting Low-Temperature CO2 Methanation Performance over Ce-Doped Co-precipitation-Derived Ni-Based Catalysts 掺铈共沉淀法镍基催化剂提高低温CO2甲烷化性能

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-10-05 DOI: 10.1134/S0036024426701736

Xinglian Yu, Tiantian Cui, Di Yang, Yanyan Feng, Wen Yang

{"title":"Boosting Low-Temperature CO2 Methanation Performance over Ce-Doped Co-precipitation-Derived Ni-Based Catalysts","authors":"Xinglian Yu, Tiantian Cui, Di Yang, Yanyan Feng, Wen Yang","doi":"10.1134/S0036024426701736","DOIUrl":"10.1134/S0036024426701736","url":null,"abstract":"CO2 methanation offers a promising approach to addressing both the greenhouse effect and the shortage of natural gas resources, making the development of efficient and stable catalysts highly imperative. Ni-based catalysts have attracted significant interest due to their low cost, high CO2 conversion, and excellent CH4 selectivity. In view of this, a series of NiMg-cop catalysts with varying Ni/Mg molar ratios and Ce loadings were synthesized by co-precipitation, and the effects of preparation methods and Ce doping on CO2 methanation performance were investigated. The results indicated that the catalyst 0.75NiMg-cop exhibited the excellent catalytic performance, holding 85.6% CO2 conversion and 100% CH4 selectivity at 300°C. Further enhancement was achieved by incorporating Ce, yielding the catalyst 0.03NiCeMg-cop, which reached 87.8% CO2 conversion while maintaining complete CH4 selectivity. Moreover, it demonstrated an outstanding stability during a 48 h time-on-stream test at 300°C, indicating superior resistance to sintering. Characterizations revealed that the co-precipitation method contributed to the formation of highly active Ni sites and small crystallite sizes. Furthermore, the addition of Ce facilitated the dispersion and reduction of the Ni species while effectively lowering the activation energy of the reaction. These findings highlighted the potential of the Ce-promoted co-precipitated Ni-based catalyst as a high-performance and durable candidate for industrial CO2 methanation applications.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 10","pages":"2300 - 2312"},"PeriodicalIF":0.7,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098120","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

Hierarchical Diatomite-Based Pt–Ga Catalysts for Nonoxidative Propane Dehydrogenation 分级硅藻土基Pt-Ga非氧化丙烷脱氢催化剂

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-10-05 DOI: 10.1134/S0036024425602988

A. V. Zubkov, T. A. Bugrova, E. V. Evdokimova, G. V. Mamontov

引用次数: 0

Mechanically Durable Flame-Retardant Superhydrophobic Coating with Self-cleaning and Anti-fouling Performance 具有自清洁和防污性能的机械耐用阻燃超疏水涂层

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-10-05 DOI: 10.1134/S0036024426602612

Yingliang Zhang, Bing Han, Kui Yuan, Xu Li, Bo Wang, Furui Ma, Libin Liu

{"title":"Mechanically Durable Flame-Retardant Superhydrophobic Coating with Self-cleaning and Anti-fouling Performance","authors":"Yingliang Zhang, Bing Han, Kui Yuan, Xu Li, Bo Wang, Furui Ma, Libin Liu","doi":"10.1134/S0036024426602612","DOIUrl":"10.1134/S0036024426602612","url":null,"abstract":"Most traditional fabrics, such as textiles and sponges, are highly flammable and susceptible to oil contamination. In this study, based on an ammonium polyphosphate/pentaerythritol flame-retardant system, hydrophobic silica nanoparticles (SiO2) and polydimethylsiloxane (PDMS) are introduced to successfully construct a composite coating that integrates both flame-retardant and superhydrophobic properties. The coated fabric materials exhibit excellent anti-fouling resistance to daily liquids such as cola and orange juice, alongside outstanding flame retardancy. The static water contact angle (WCA) of the hydrophobic flame-retardant coating (HFRC) is greater than 150°, and it retains excellent water repellency and self-cleaning performance even after 150 abrasion cycles or 100 kneading cycles. Furthermore, the limiting oxygen index (LOI) of the HFRC-treated material reaches 39%. The HFRC demonstrates remarkable superhydrophobicity, mechanical durability, and flame retardancy, providing a novel and facile approach for the low-cost fabrication of flame-retardant superhydrophobic coatings.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 10","pages":"2434 - 2440"},"PeriodicalIF":0.7,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098289","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

Analysis of the Frequency–Temperature Dependences of Dielectric Permittivity of Vanillic Acid 香草酸介电常数的频率-温度关系分析

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-10-05 DOI: 10.1134/S0036024426701852

A. S. Volkov, S. S. Khviyuzov

引用次数: 0

Facile Synthesis of Ag–CoOx Catalysts for 4-Nitrophenol Reduction 4-硝基苯酚还原用Ag-CoOx催化剂的简易合成

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2026-10-05 DOI: 10.1134/S0036024426601989

Jun Liu, Honggui Xiang, Jing Yang, Xianze Liu

{"title":"Facile Synthesis of Ag–CoOx Catalysts for 4-Nitrophenol Reduction","authors":"Jun Liu, Honggui Xiang, Jing Yang, Xianze Liu","doi":"10.1134/S0036024426601989","DOIUrl":"10.1134/S0036024426601989","url":null,"abstract":"A chemical reduction method was developed for the synthesis of silver-cobalt oxides (Ag–CoOx). The structural and compositional properties of the as-prepared Ag–CoOx were systematically characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), energy dispersive spectrometry (EDS), and X-ray photoelectron spectroscopy (XPS). Benefiting from the synergistic effect between Ag and CoOx, the Ag–CoOx catalyst exhibited excellent catalytic activity and high cycling stability toward the reduction of 4-nitrophenol (4-NP). Kinetic studies of Ag2–Co3Ox revealed that the apparent rate constant (kapp) reached 63.18 × 10–3 s–1, which is superior to many previously reported Ag-based or Co-based catalysts for 4-NP reduction. Notably, after 5 consecutive catalytic cycles, the catalyst still maintained a conversion efficiency of over 97% for 4-NP. This work provides a promising synthetic route for high-quality nanoporous Ag–CoOx, which is expected to promote their practical applications in catalysis and environmental sustainability.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"100 10","pages":"2396 - 2406"},"PeriodicalIF":0.7,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098491","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