Russian Journal of Physical Chemistry A最新文献_第4页

Electrostatically Assembled Sb2S3/MXene Nanocomposites As Anode Materials for High-Performance Lithium-Ion Batteries 静电组装Sb2S3/MXene纳米复合材料作为高性能锂离子电池负极材料

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI: 10.1134/S0036024424703679

Lei Bai, Fangming Cheng, Yuting Dong

{"title":"Electrostatically Assembled Sb2S3/MXene Nanocomposites As Anode Materials for High-Performance Lithium-Ion Batteries","authors":"Lei Bai, Fangming Cheng, Yuting Dong","doi":"10.1134/S0036024424703679","DOIUrl":"10.1134/S0036024424703679","url":null,"abstract":"Antimony sulfide (Sb2S3) possesses a high theoretical capacity and excellent reversibility, making it a promising anode material for lithium-ion batteries (LIBs). However, its poor intrinsic conductivity and significant volume changes during charge/discharge cycles severely limit its cycling stability and rate performance. In this study, a novel composite material was synthesized by electrostatically assembling Sb2S3 nanowires (Sb2S3 nw) onto MXene nanosheets as a potential anode material (SbSMX). The introduction of highly conductive MXene substrates enhances electron transfer between the distinct interfaces of Sb2S3 and MXene. Additionally, the constructed 1D–2D structure promotes ion transport within the electrode, while the mechanical flexibility of MXene effectively mitigates the severe volume expansion of Sb2S3. As a result, the SbSMX composite exhibits a high capacity of 813 mA h g–1 at a current of 50 mA g–1, stable cycling performance with a capacity of 735 mA h g–1 after 100 cycles at 100 mA g–1 (88% retention), and excellent rate capability, achieving 466 mA h g–1 at a current of 3 A g–1.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 3","pages":"620 - 628"},"PeriodicalIF":0.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830695","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

Role of Powdered Activated Carbon in the Adsorption Behavior of Hazardous Lead (Pb) Using PDAC As an Adsorbent 粉状活性炭对PDAC吸附剂吸附有害铅的作用

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI: 10.1134/S0036024424703655

R. Prabakaran, M. Ajithkumar, C. Kamatchi, S. Arivoli

{"title":"Role of Powdered Activated Carbon in the Adsorption Behavior of Hazardous Lead (Pb) Using PDAC As an Adsorbent","authors":"R. Prabakaran, M. Ajithkumar, C. Kamatchi, S. Arivoli","doi":"10.1134/S0036024424703655","DOIUrl":"10.1134/S0036024424703655","url":null,"abstract":"The investigation aimed to remove the Pb(II) ions from the artificial liquid using PDAC. In PDAC, PD is an abbreviation of Pithecellobium Dulce, it is a botanical name of Manila Tamarind and AC means Activated Carbon. Pithecellobium Dulce Activated carbon (PDAC) is synthesized from Pithecellobium Dulce bark and pod shell. Lead is used for cables, roofs, water and gas pipelines, mining activities, the manufacturing of acid batteries, and other structures. The industry recognizes the need for dye-treated sewage treatment because it can cause health problems for humans and animals. This research explored PDAC for its possible consumption as an eco-friendly bio-adsorbent to remove the Pb(II) ions. This investigation studied adsorption-related variables, including initial metal ion concentration, contact time, adsorption rate, temperature effects, and pH. Adsorption equilibrium was determined using Longmuir and Friendlich’s isothermal models. Current work suggests that PDAC could be employed as a low-cost adsorbent to adsorb the lead ion in an artificial liquid solution. Adsorption characteristics were determined by SEM, XRD, and FTIR studies. The results of the study demonstrated that employing an environmentally friendly adsorbent based on PDAC was a more economical and efficient way to remove Pb(II) ions from an aqueous solution.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 3","pages":"604 - 611"},"PeriodicalIF":0.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830744","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

Magnetocaloric Effect in Mn-Doped Topological Insulator Bi2Se3 Thin Films 掺杂mn拓扑绝缘体Bi2Se3薄膜的磁热效应

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI: 10.1134/S0036024424703709

Hatem R. Alamri, Mahmoud A. Hamad

引用次数: 0

A Novel Application of Fe3O4@MnO2/NC Bimetallic Oxide Catalyst with Core–Shell Structure toward Oxygen Reduction Reaction Fe3O4@MnO2/NC核壳结构双金属氧化物催化剂在氧还原反应中的新应用

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI: 10.1134/S0036024424703497

Aiai Zhang, Chunli Li, Zheng Liu, Shisi Yuan, Yang Chen, Qiong Wang, Fengzhen Zhang

{"title":"A Novel Application of Fe3O4@MnO2/NC Bimetallic Oxide Catalyst with Core–Shell Structure toward Oxygen Reduction Reaction","authors":"Aiai Zhang, Chunli Li, Zheng Liu, Shisi Yuan, Yang Chen, Qiong Wang, Fengzhen Zhang","doi":"10.1134/S0036024424703497","DOIUrl":"10.1134/S0036024424703497","url":null,"abstract":"The energy crisis and environmental pollution have made the development of highly efficient oxygen reduction reaction (ORR) electrocatalysts a research priority to improve fuel cell performance. A simple one-pot hydrothermal method was successfully used to synthesize the Fe3O4@MnO2/NC composite material, and the performance of catalyst was enhanced by adjusting the molar ratio of Fe–Mn and the addition of coconut shell carbon (CSC). The characterization results show that the Fe3O4@MnO2/NC with core–shell structure has a high specific surface area (751 m2 g–1) and provides abundant active sites for ORR. The electrochemical test results show that Fe3O4@MnO2/NC exhibits a superior ORR activity among the as-prepared catalysts due to strong interfacial coupling interaction. In addition, it also has a high specific capacitance, a small Tafel slope, and the lowest impedance in ORR. This not only verifies its excellent performance, but also provides a new approach and idea for developing non-precious metal ORR catalysts.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 3","pages":"453 - 461"},"PeriodicalIF":0.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830806","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

High Sulfur-Tolerant Pt/TiO2 for Catalytic Complete Oxidation of Toluene 高耐硫Pt/TiO2催化甲苯完全氧化

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI: 10.1134/S0036024424703527

Jinbo Wang, Yu Wang, Ruixiang Qin, Jing Li

{"title":"High Sulfur-Tolerant Pt/TiO2 for Catalytic Complete Oxidation of Toluene","authors":"Jinbo Wang, Yu Wang, Ruixiang Qin, Jing Li","doi":"10.1134/S0036024424703527","DOIUrl":"10.1134/S0036024424703527","url":null,"abstract":"The SnO2 doped 0.2 wt % Pt/TiO2 catalysts were prepared by wet impregnation method for the catalytic oxidation of toluene. The research focused on the SO2 resistance and catalytic performance of Pt/SnO2–TiO2. The results showed that T90 (the temperature corresponding conversion of 90%) was 176°C at 1000 ppm toluene concentration and weight hourly space velocity (WHSV) of 36 000 mL h–1 g–1. Adding 10 wt % SnO2 to the Pt/TiO2 catalyst reduced the adsorption capacity of the active component Pt for SO2, enhancing the catalyst’s resistance to SO2 poisoning. Pt/SnO2–TiO2 catalysts could recover to the initial activity after 9 h poisoning with 2800 ppm thiophene. The Pt/SnO2–TiO2 also maintained good stability during the 60 h test at 240°C with a toluene conversion larger than 99%. A series of characterization tests including XRD, H2-TPR, and TEM revealed that Pt/SnO2–TiO2 possesses a mesoporous structure and a large amount of lattice oxygen, with Pt being uniformly dispersed on the carrier surface.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 3","pages":"480 - 487"},"PeriodicalIF":0.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830863","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

Superior Toxicity-Resistant MnZrOx for Catalytic Complete Oxidation of Toluene 催化甲苯完全氧化的超强耐毒性MnZrOx

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI: 10.1134/S0036024424703515

Jinbo Wang, Jing Li, Ruixiang Qin, Yu Wang

引用次数: 0

Reactivity of Tetra-4(4-methoxyphenoxy)phthalocyanine in Acid-Base Interactions with Nitrogen-Containing Organic Bases 四-4（4-甲氧基苯氧基）酞菁与含氮有机碱酸碱相互作用的反应性

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI: 10.1134/S0036024424703485

O. A. Petrov

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Research on the Dispersion of Functionalized Graphene Nanoplatelets (GNPs) in Aqueous Solution 功能化石墨烯纳米片（GNPs）在水溶液中的分散研究

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI: 10.1134/S0036024424703631

Faping Li, Huan Wang, Lisheng Liu

{"title":"Research on the Dispersion of Functionalized Graphene Nanoplatelets (GNPs) in Aqueous Solution","authors":"Faping Li, Huan Wang, Lisheng Liu","doi":"10.1134/S0036024424703631","DOIUrl":"10.1134/S0036024424703631","url":null,"abstract":"Due to its exceptional mechanical, optical, electrical and magnetic properties, graphene is widely used to enhance and improve the mechanical, electrical, and electromagnetic shielding properties of composite materials. In the paper, functionalized GNPs are initially prepared through sulfuric acid and nitric acid treatment for dispersion in an aqueous solution. A subsequent method using methylcellulose (MC) as a dispersant along with ultrasonic processing is then employed to further improve the dispersion of the functionalized GNPs. Various techniques, such as UV–Vis absorbance, zeta potential, surface tension and adsorption isotherm, are employed to characterize the dispersing performance of the functionalized GNPs suspension. Additionally, the dispersion mechanism of the functionalized GNPs is analyzed by means of the transmission electron microscopy (TEM). Experimental results indicate that the optimal MC concentration for dispersing functionalized GNPs in aqueous solution is 0.6 g/L. TEM images reveal that MC effectively disrupts agglomerated bundles, significantly reducing the thickness of the functionalized GNPs. The dispersing mechanism involves the diaphragm and hydrophobic effects, which prevent the GNPs from aggregating.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 3","pages":"586 - 593"},"PeriodicalIF":0.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830923","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 and Reaction of Nitrogen Oxide (NO) Molecules on the Surfaces of Nanosized Nickel Clusters on α-Al2O3(0001) Aluminum Oxide α-Al2O3（0001）氧化铝表面氮氧化物（NO）分子在纳米镍团簇表面的吸附和反应

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI: 10.1134/S003602442470359X

T. T. Magkoev, N. E. Pukhaeva, Y. Men, R. Behjatmanesh-Ardakani, M. Elahifard, O. G. Ashkhotov

{"title":"Adsorption and Reaction of Nitrogen Oxide (NO) Molecules on the Surfaces of Nanosized Nickel Clusters on α-Al2O3(0001) Aluminum Oxide","authors":"T. T. Magkoev, N. E. Pukhaeva, Y. Men, R. Behjatmanesh-Ardakani, M. Elahifard, O. G. Ashkhotov","doi":"10.1134/S003602442470359X","DOIUrl":"10.1134/S003602442470359X","url":null,"abstract":"Experimental means of surface analysis are used to investigate in situ the adsorption and reaction of nitrogen oxide (NO) molecules on the surfaces of a model metal–oxide system. The system is formed through the controlled deposition of nickel clusters under conditions of an ultrahigh vacuum on the surfaces of α-Al2O3(0001) aluminum oxide thin films grown on a Mo(110) substrate. X-ray photoelectron and Auger electron spectroscopy (XPS, AES), infrared Fourier spectroscopy (IFS), and temperature-programmed desorption (TPD) data reveal a conditional 2 nm size of Ni clusters that separates the character of the electronic state of NO molecules adsorbed on their surfaces and their reactive capability. It is shown that a distinctive feature of Ni clusters with typical diameters of less than 2 nm is the adsorption of NO molecules on their surfaces in the form of (NO)2 dimers. In contrast, adsorption produces (NO) monomers on clusters of larger size. It is concluded that this difference is the reason for the different reaction behavior of the molecules. A key difference between clusters smaller and larger than 2 nm in size is that in the former, N2O molecules form upon heating the system and are desorbed into the gas phase. This does not occur in the latter. The formation of N2O is due to the mutual influence of NO molecules forming (NO)2 dimers under the action of the metal–oxide interface. Results indicate the possibility of tuning the catalytic efficiency of the metal–oxide system by varying the size of the applied metal clusters.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 3","pages":"551 - 557"},"PeriodicalIF":0.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830694","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

Kinetics and Mechanism of Coarsening for Nanoparticles of Sulfur and Alkaline Earth Metal Sulfates Coprecipitated from True Polysulfide Solutions 真多硫溶液共沉淀硫与碱土金属硫酸盐纳米颗粒粗化动力学及机理

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI: 10.1134/S0036024424703606

F. Kh. Urakaev, I. A. Massalimov, B. S. Akhmetshin, B. I. Massalimov, A. N. Khusainov, M. R. Samsonov, Sh. S. Mustafokulov

{"title":"Kinetics and Mechanism of Coarsening for Nanoparticles of Sulfur and Alkaline Earth Metal Sulfates Coprecipitated from True Polysulfide Solutions","authors":"F. Kh. Urakaev, I. A. Massalimov, B. S. Akhmetshin, B. I. Massalimov, A. N. Khusainov, M. R. Samsonov, Sh. S. Mustafokulov","doi":"10.1134/S0036024424703606","DOIUrl":"10.1134/S0036024424703606","url":null,"abstract":"Nanoparticles of alkaline earth metal sulfates (AEMSes) and nanocomposites of AEMSes with sulfur nanoparticles (nanosulfur) are synthesized from polysulfide aqueous solutions (PASes) of calcium, strontium, and barium AEMs (CaSn, SrSn, BaSn; n > 1). The AEM PASes are prepared in an aqueous medium at temperatures of 70 and 90°C through the reactions between metal hydroxides and sulfur. It is found that using sulfur subjected to mechanical activation in a disintegrator for synthesis allows the formation of higher AEM PAS concentrations in shorter periods of time. To identify possible mechanisms of mechanochemical recrystallization in liquid media, kinetics of particle coarsening due to the reversible aggregation of sulfur nanoparticles and AEMSes is determined via static light scattering. It is found that particles with sizes around 30 nm form initially, and the particles coarsen to sizes of several tens of micrometers over time. The rate of particle coarsening (agglomeration) constants (Q) grow along with the concentration of acid, and the optimum concentration for implementing the Q-mechanism is 10%. It is found that using surfactants (neonol; concentration, 5%) results in a multiple reduction of Q. It is also revealed that the value of Q value rises along with temperature, and the energies of activation for the coarsening of S/MeSO4 particles are determined for the optimum range of 300–350 K. Practical aspects of the results of this work are discussed with reference to using the synthesized samples for the germination of wheat seeds, and the hydrophobicity of sulfur-containing S/MeSO4 samples is analyzed.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 3","pages":"558 - 569"},"PeriodicalIF":0.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830746","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