Russian Journal of Physical Chemistry B最新文献_第5页

Study on Nitrogen Doped Hollow Cubic Carbon Electromagnetic Wave Absorbing Materials 氮掺杂空心立方碳电磁波吸波材料的研究

IF 1.4 4区化学

Russian Journal of Physical Chemistry B Pub Date : 2025-09-09 DOI: 10.1134/S199079312570054X

F. H. Huang, F. Yan, Z. J. Jing, J. W. Wen, S. Y. Li, Y. Chen

{"title":"Study on Nitrogen Doped Hollow Cubic Carbon Electromagnetic Wave Absorbing Materials","authors":"F. H. Huang, F. Yan, Z. J. Jing, J. W. Wen, S. Y. Li, Y. Chen","doi":"10.1134/S199079312570054X","DOIUrl":"10.1134/S199079312570054X","url":null,"abstract":"Carbon based materials have the characteristics of light weight, adjustable dielectric and stable performance, so they have become the most concerned wave absorbing materials. In this paper, phenolic resin was prepared with sodium chloride as template, and then L-lysine as nitrogen source was used to add nitrogen into phenolic resin, and the final nitrogen doped hollow cubic carbon material was obtained by etching after carbonization. During the experiment, the material with excellent wave absorbing performance was prepared by controlling the doping amount of nitrogen element. Finally, it was found that the nitrogen-doped hollow cubic carbon wave absorbing material could obtain the best reflection loss of –50.26 dB and the maximum effective bandwidth of 4.68 GHz at the extremely low load of 1.75 wt %. The one-component wave absorbing material can have good absorbing performance under very low load, which can become the best candidate material for lightweight and efficient electromagnetic wave absorber without adding other materials, and achieve the purpose of “wide, strong, light and thin.”","PeriodicalId":768,"journal":{"name":"Russian Journal of Physical Chemistry B","volume":"19 4","pages":"844 - 852"},"PeriodicalIF":1.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011859","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

Probing the Impact of Buffer Layer on CuGaSe2 Based Solar Cells for Photovoltaic Performance 探讨缓冲层对CuGaSe2基太阳能电池光伏性能的影响

IF 1.4 4区化学

Russian Journal of Physical Chemistry B Pub Date : 2025-09-09 DOI: 10.1134/S1990793125700526

S. Si Abdallah, B. Zaidi, A. Sait Alali, H. Al-Dmour

{"title":"Probing the Impact of Buffer Layer on CuGaSe2 Based Solar Cells for Photovoltaic Performance","authors":"S. Si Abdallah, B. Zaidi, A. Sait Alali, H. Al-Dmour","doi":"10.1134/S1990793125700526","DOIUrl":"10.1134/S1990793125700526","url":null,"abstract":"With a particular focus on addressing environmental sustainability challenges, this study investigates the impact of buffer layers on the efficiency of CuGaSe2 based solar cells using SCAPS simulation software program. The research examines how variations in absorber layer thickness, series resistance (RS), and shunt resistance (RSh) affect electrical properties such as open-circuit voltage (VOC), short-circuit current density (Jsc), and overall efficiency. Additionally, the influence of acceptor density (NA) and donor density (ND) on performance was analysed. The increasing the absorber layer thickness improves short-circuit current density (Jsc) by enhancing light absorption, which leads to more electron-hole pairs being generated. However, thicker layers also increase the distance charge carriers must travel, raising the likelihood of recombination, which reduces open-circuit voltage (Voc). Additionally, thicker layers may introduce higher series resistance and non-ideal contact effects, further lowering Voc. The optimal thickness was determined to be 0.5 µm, resulting in efficiencies of 21.09% for CdTe cells and 28.58% for CdS cells. Transitioning from CdTe to CdS buffer layers further enhances efficiency, while higher shunt resistance and donor density, alongside lower series resistance, contribute to improved performance. These results emphasize the importance of optimized CuGaSe2-based solar cells performance parameters scuh as buffer layer thickness, acceptor defect density, donor defect density, series and shunt resistance on higher efficiency and better performance of the solar cells. The study provides a direction for more efficient renewable energy solutions which hold promise for sustainable future by reducing dependence on fossil fuels and mitigating carbon emissions.","PeriodicalId":768,"journal":{"name":"Russian Journal of Physical Chemistry B","volume":"19 4","pages":"824 - 829"},"PeriodicalIF":1.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011650","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

Synthesis of Phosphorus-Doped MnCo2S4 Nanosheet-Based Porous Spheres for Hybrid Supercapacitors 杂化超级电容器用掺磷MnCo2S4纳米片多孔球的合成

IF 1.4 4区化学

Russian Journal of Physical Chemistry B Pub Date : 2025-09-09 DOI: 10.1134/S1990793125700678

Z. Sheibanizadeh, Z. Khalaj, K. Behzad, M. Z. Pedram, M. Monajjemi

{"title":"Synthesis of Phosphorus-Doped MnCo2S4 Nanosheet-Based Porous Spheres for Hybrid Supercapacitors","authors":"Z. Sheibanizadeh, Z. Khalaj, K. Behzad, M. Z. Pedram, M. Monajjemi","doi":"10.1134/S1990793125700678","DOIUrl":"10.1134/S1990793125700678","url":null,"abstract":"Phosphorus-doped MnCo2S4 hollow spheres with a heterogeneous, nanosheet-assembled architecture were synthesized via a simple gas–liquid diffusion method under ambient conditions, in contrast to conventional hydrothermal and gas-phase phosphating techniques. Ammonia diffusion into a homogeneous manganese–cobalt sulfate solution led to the formation of well-dispersed hollow spheres with lamellar structures, promoting efficient electron transport and enhanced electrochemical activity. Phosphorus atoms partially substituted sulfur in the lattice, generating abundant vacancies that improved conductivity and charge transfer kinetics. The resulting electrode exhibited a high specific capacity of 928.2 C g–1 at 1 A g–1 and excellent cycling stability, retaining 93.8% of its capacity after 10 000 cycles. A hybrid supercapacitor was assembled using the phosphorus-doped MnCo2S4 as the cathode and activated carbon as the anode in 6 M KOH electrolyte. The device delivered a specific capacity of 225.6 C g–1 at 1 A g–1, retained 75.5% capacity at 30 A g–1, and achieved a high energy density of 55.8 Wh kg–1 with a power density up to 24453.6 W kg–1, demonstrating excellent rate performance and long-term stability.","PeriodicalId":768,"journal":{"name":"Russian Journal of Physical Chemistry B","volume":"19 4","pages":"853 - 867"},"PeriodicalIF":1.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011568","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

Experimental Investigation and Central Composite Design Modeling Optimization of Dual Biodiesel Mixture in CI Engine Parameters 双生物柴油混合气CI发动机参数试验研究及中心复合设计建模优化

IF 1.4 4区化学

Russian Journal of Physical Chemistry B Pub Date : 2025-09-09 DOI: 10.1134/S1990793125700666

G. A. C. Jayaseelan, M. A. P. Ashim, S. Srinivas, P. Rajendran

{"title":"Experimental Investigation and Central Composite Design Modeling Optimization of Dual Biodiesel Mixture in CI Engine Parameters","authors":"G. A. C. Jayaseelan, M. A. P. Ashim, S. Srinivas, P. Rajendran","doi":"10.1134/S1990793125700666","DOIUrl":"10.1134/S1990793125700666","url":null,"abstract":"The current study involves the renewed biodiesel derived from non-edible as Juliflora and Candlenut oil into biodiesel using a two-stage trans esterification process. The physiochemical characteristics of biodiesels are analyzed and experiments are carried out employing a single-cylinder four-stroke diesel engine to test several biodiesel blends as B0, B20, B30 and B40 for, performance, and emission characteristics and experimental outcomes were analysed using Central composite modelling optimization. The results indicates the brake specific fuel consumption (0.285 kg/kW h) lower and the Brake thermal efficiency 31.8% higher for the 20% blended diesel. These values are comparable to diesel, with variations of 3.7 and 3.2% respectively. During the experiment, the emission parameters of HC, CO, and smoke were 17.67, 8.2, and 9.45% respectively, lower for CJ20 blend than diesel. Nevertheless, NOx emission is 4.2% higher than base fuel, while minimal difference and among the lower than other blends. Furthermore, the Central composite design was developed and find the optimal results of a CI engine achieved. Overall results confirm that 20% CJ biodiesel blended diesel is the alternate of the standard diesel.","PeriodicalId":768,"journal":{"name":"Russian Journal of Physical Chemistry B","volume":"19 4","pages":"816 - 823"},"PeriodicalIF":1.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011572","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

Modeling of Cr3+ Doped TiO2 (Rutile) Single Crystals Cr3+掺杂TiO2（金红石）单晶的建模

IF 1.4 4区化学

Russian Journal of Physical Chemistry B Pub Date : 2025-09-09 DOI: 10.1134/S1990793125700472

M. Bharati, V. Singh, R. Kripal

引用次数: 0

Mechanical Model of Erythrocyte: Allostery at the Cellular Level? 红细胞的力学模型：细胞水平的变构？

IF 1.4 4区化学

Russian Journal of Physical Chemistry B Pub Date : 2025-09-09 DOI: 10.1134/S1990793125700514

S. G. Gevorkian, D. S. Gevorgyan, Y. A. Dyakov

引用次数: 0

Rapid Ti–TiC Plating of Diamond Particle Sufraces by Thermal Explosion 金刚石颗粒表面热爆炸快速镀Ti-TiC

IF 1.4 4区化学

Russian Journal of Physical Chemistry B Pub Date : 2025-09-09 DOI: 10.1134/S1990793125700654

D. H. Han, J. L. Liu, C. Peng, B. Y. Liang, G. T. Zhou, B. T. Hu

引用次数: 0

Rapid Preparation of C3N4/MgO Composites by Thermal Exfoliation Method and Their Photocatalytic Degradation Properties 热剥离法快速制备C3N4/MgO复合材料及其光催化降解性能

IF 1.4 4区化学

Russian Journal of Physical Chemistry B Pub Date : 2025-09-09 DOI: 10.1134/S1990793125700563

S. S. Xu, Q. Q. Wang, C. W. Lai, J. X. Li

引用次数: 0

Effect of Binary Interaction Parameter on Surface Tension of Binary Refrigerant Fluids: Linear Gradient Theory 二元相互作用参数对二元制冷剂流体表面张力的影响：线性梯度理论

IF 1.4 4区化学

Russian Journal of Physical Chemistry B Pub Date : 2025-09-09 DOI: 10.1134/S1990793125700551

A. Taein, R. Khordad, K. Abbasi

{"title":"Effect of Binary Interaction Parameter on Surface Tension of Binary Refrigerant Fluids: Linear Gradient Theory","authors":"A. Taein, R. Khordad, K. Abbasi","doi":"10.1134/S1990793125700551","DOIUrl":"10.1134/S1990793125700551","url":null,"abstract":"Surface tension (ST), as a thermophysical property, has many applications in industry. Linear gradient theory (GT) is widely used to predict ST. Based on GT and the equation of state of cubic plus association (CPA), a method for calculating the ST of refrigerant mixtures is proposed in this work. Also, a new relationship has been considered for the influence parameter (IP), which is a function of the bulk and vapor phase densities, and it has a variable exponent (n). At first, the unknown coefficients ((A) and (B)) of the IP were calculated for pure refrigerants, then the binary interaction parameter (left( {{{l}_{{ij}}}} right)) was calculated for binary refrigerant mixtures to optimize the proposed model. Finally, the ST of eight binary refrigerants was obtained for different concentrations, and the calculations were repeated for five different powers of the IP. In our calculations, we considered both zero and nonzero binary interaction parameters. The results from this model show that the calculated ST is in good agreement with the experimental values. The best result is related to the binary R32+R134a considering the power of –2.5 in the proposed equation of the IP and proposing the nonzero binary interaction parameter (AAD ~ 1%)","PeriodicalId":768,"journal":{"name":"Russian Journal of Physical Chemistry B","volume":"19 4","pages":"868 - 877"},"PeriodicalIF":1.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011651","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

Prediction Model by Adaptive Neuro-Fuzzy Inference System of R600A Vapour Compression Refrigeration System Using Al2O3/TiO2 Composite Nanolubricants 基于自适应神经模糊推理系统的R600A Al2O3/TiO2复合纳米润滑剂蒸汽压缩制冷系统预测模型

IF 1.4 4区化学

Russian Journal of Physical Chemistry B Pub Date : 2025-09-09 DOI: 10.1134/S1990793125700617

A. Imthiyas, B. Musthafa, K. Ashish, M. Gobind

{"title":"Prediction Model by Adaptive Neuro-Fuzzy Inference System of R600A Vapour Compression Refrigeration System Using Al2O3/TiO2 Composite Nanolubricants","authors":"A. Imthiyas, B. Musthafa, K. Ashish, M. Gobind","doi":"10.1134/S1990793125700617","DOIUrl":"10.1134/S1990793125700617","url":null,"abstract":"This study investigates the enhancement of a vapour compression refrigeration system using Al2O3/TiO2 composite nanolubricants with R600a refrigerant. The main objective is the experiments were performed by varying the nanolubricants concentrations and to find out the optimal concentration. Al2O3/TiO2 blended nano lubricants were used to produce a greater cooling effect of 200 W along with a 30% increase by employing the ANFIS approach, which is superior to results from experiments. The approach of ANFIS was used to obtain the minimum energy utilization of 95 W. The results indicates that, the improved COP of 3.2 with a 28% higher than standard refrigerant. In comparison to experimental results, the usage of Al2O3/TiO2 composite Nano lubricants resulted in an increase of COP at an optimal level, cooling effect, and a 25% reduction in compressor work to decrease energy consumption when utilizing the ANFIS prediction technique. By dispersing 0.4 g/L in R600a leads in better results in comparison with the system without nano lubricants and other nano lubricants concentrations.","PeriodicalId":768,"journal":{"name":"Russian Journal of Physical Chemistry B","volume":"19 4","pages":"953 - 960"},"PeriodicalIF":1.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011864","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