Article
Automation & Control Systems
Samson Okikiola Oparanti, Abubakar Abubakar Khaleed, Abdelghaffar Amoka Abdelmalik
Summary: This study investigates the effect of Al2O3 and TiO2 nanoparticles dispersed in methyl ester to form nanofluids for oil-filled power equipment. The results show that Al2O3 nanofluid possesses superior dielectric properties and characteristic breakdown strength, making it a suitable replacement for mineral insulating oil.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Fan Xu, Muhammad Fasehullah, Feipeng Wang, Jian Zhou
Summary: This study examines the effect of nanofluids on the dielectric strength of synthetic ester-based oils using thermally stimulated depolarization current. The findings suggest that nanofluids exhibit improved performance in terms of current density and trap energy levels. Additionally, the addition of nanoparticles significantly enhances the AC breakdown voltage of the oils.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Mrutyunjay Maharana, Niharika Baruah, Sisir Kumar Nayak, Niranjan Sahoo, Kai Wu, Lalit Goswami
Summary: The purpose of this study is to prepare a stable mineral-oil-based nanofluid for transformer cooling, by dispersing insulating and semiconducting nanoparticles in the oil to enhance their electrothermal properties. The thermal conductivity and ACBDV of the nanofluid are investigated, and it is found that the 0.01 wt.% based nanofluid exhibits superior cooling and insulation properties.
Article
Multidisciplinary Sciences
Jean Lambert Jiosseu, Asse Jean-Bernard, Ghislain Mengata Mengounou, Adolphe Moukengue Imano, Emeric Tchamdjio Nkouetcha
Summary: This article presents a comparative study on the physicochemical and electrical properties of monoesters of castor oil and their counterparts based on FeO3 and Z(n)O nanoparticles. Results are compared with those of triesters and the IEEE C 57.14 standard. Statistical analysis indicates an increase in viscosity and acid number for both FeO3 and Z(n)O samples. Fire point shows an increment for FeO3 samples, while a regression is observed for Z(n)O samples. Breakdown voltage and partial discharge inception voltage show improvements with FeO3 samples.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Multidisciplinary
Mehmet Karatas, Yunus Bicen
Summary: Dielectric nanofluids, specifically SiO2 nanoparticle suspensions in mineral oil, have been investigated for their improved dielectric and thermal properties. The addition of nanoparticles leads to an enhancement in AC breakdown voltage and thermal conductivity, but it also results in a decrease in AC breakdown voltage and an increase in viscosity when the critical volume fraction is exceeded.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Thermodynamics
M. Iqbal, K. Kouloulias, A. Sergis, Y. Hardalupas
Summary: Nanofluids, colloidal suspensions of nanoparticles and heat transfer fluids, have shown potential for enhanced heat transport in various applications. This study investigates the reported enhancements in thermal conductivity and their alignment with theoretical predictions using a rigorous mathematical analysis method. The results suggest that low nanoparticle concentrations and the use of pH control for electrostatic stabilization, rather than surfactants for steric stabilization, are likely to result in anomalous effects. The findings highlight the importance of understanding the underlying mechanisms of heat transfer in nanofluid preparation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Review
Chemistry, Physical
Zilong Zhang, Fangmin Zuo, Tianzi Cai, Xingyu Gai, Li Wan, Haidan Lin, Bolin Wang, Haifeng Zhang
Summary: In the last decade, oil-based titanium dioxide nanofluids (TiO2 NFs) have gained significant attention for their unique insulating properties and excellent thermal performance, making them potential candidates for modified insulating oils in power transformers. This article provides a comprehensive review of the recent advances in the preparation, characterization, and properties of different oil-based TiO2 NFs. Various characterization techniques are employed to determine the crystal structure, particle size, surface function, surface charge, and stability of the nanofluids. The critical properties of oil-based TiO2 NFs under different influencing factors are highlighted, and the existing challenges and future perspectives are presented.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Zhiqiang Wu, Yiwen Peng, Ying Song, Haoyu Liang, Lei Gong, Zhenguo Liu, Qiuyu Zhang, Yanhui Chen
Summary: A series of cross-linked polyimide films with outstanding dielectric properties and high temperature energy storage property were prepared by introducing the end-capping agent, norbornene dioic anhydride. The cross-linked structure greatly reduces the dielectric loss and improves the electrical insulation properties of the films. The films exhibit a maximum energy storage density of 9.4 J/cm3 and maintain high energy storage density and efficiency at elevated temperatures.
MATERIALS TODAY ENERGY
(2023)
Article
Polymer Science
Jiale Wu, Yiran Zhang, Yangzhi Gong, Kun Wang, Yun Chen, Xupeng Song, Jun Lin, Boyang Shen, Shaojian He, Xingming Bian
Summary: Orderly arranged SiC/EP composites were fabricated in this study, with magnetic SiC showing enhanced breakdown strength and thermal conductivity. The potential application of these composites lies in the field of insulation materials for power electronic device packaging.
Article
Materials Science, Multidisciplinary
Afaf M. Babeer, Abd El-razek Mahmoud
Summary: In this study, a new strategy called suppression ferroelectricity of KNN lead-free ceramics was proposed for enhancing energy storage properties and dielectric breakdown strength. The synthesis of KNN and NN-ABT ceramics using the solid reaction technique was conducted, and their crystal structure, dielectric, and ferroelectric properties were studied. The results showed that by inhibiting grain size and modifying the crystal structure, significant improvement in energy storage performance and dielectric breakdown strength could be achieved.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Thermodynamics
Victor A. Martinez, Felipe Lozano-Steinmetz, Diego A. Vasco, Paula A. Zapata, Ignacio Chi-Duran, Dinesh Pratap Singh
Summary: Water-based nanofluids prepared with ZnO nanoparticles were characterized for their thermal conductivity, viscosity, and stability. Results showed that nanofluids with 3wt% concentration exhibited improved thermal conductivity and decreased viscosity compared to those with 1wt% concentration. The use of nanofluids in microchannels enhanced heat transfer performance, especially at low Reynolds numbers.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Article
Multidisciplinary Sciences
J. Tielke, M. Maas, M. Castillo, K. Rezwan, M. Avila
Summary: Nanofluids are mixtures of nanoparticles suspended in a base heat-transfer liquid, and their thermal conductivity is influenced by factors such as particle concentration, size, temperature, and surfactants. The conductivity increases with concentration and temperature, with silica nanofluids showing a significant effect of particle size on heat transfer speed.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Thermodynamics
K. S. Pavithra, S. C. Gurumurthy, M. P. Yashoda, Tarun Mateti, Koduri Ramam, Roopa Nayak, M. S. Murari
Summary: Silver nanofluids were synthesized using a one-step wet chemical method, and stable nanofluids were prepared by varying the concentration ratio of dispersants. The maximum thermal conductivity enhancement was observed in the presence of an equimolar ratio of PVP-PVA (1:1:1) blends as stabilizers.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Energy & Fuels
Suhaib Ahmad Khan, Mohd Tariq, Asfar Ali Khan, Shabana Urooj, Lucian Mihet-Popa
Summary: This study investigates the dielectric characteristics of pure synthetic ester oil and its related nanofluids using ZnO and CuO nanomaterials. The results show that ZnO nanofluid has a higher breakdown voltage, while CuO nanofluid exhibits the minimum dissipation factor even at higher temperatures.
Article
Energy & Fuels
Hongtao Jiang, Xiaohong Zhang, Junguo Gao, Ning Guo
Summary: Blending inorganic particles such as montmorillonite (MMT) and silica (SiO2) with LDPE can improve the dielectric properties of composite materials, particularly reducing the dielectric loss by adding MMT particles. The permittivity of SiO2-MMT/LDPE remains at a low level between 20 to 100 degrees Celsius. The breakdown field strength of LDPE composites with added SiO2 particles increased by approximately 17%, while SiO2-MMT/LDPE and MMT-SiO2/LDPE composites increased by approximately 6.8% and 4.6%, respectively.
Article
Engineering, Environmental
Bushra Jabar, Adil Mansoor, Yue-xing Chen, Sidra Jamil, Shuo Chen, Guang-xing Liang, Fu Li, Ping Fan, Zhuang-hao Zheng
Summary: This study reports on the optimistic influence of in-situ nanocompositing in adjusting the balance between majority and minority carriers in the p-type BixSb2-xTe3 thermoelectric material. The results show that by optimizing heat treatment and adding nanosized Te, the power factor is improved through the enhancement of electrical conductivity and the Seebeck coefficient. Additionally, adjusting antisite defects formation enlarges the bandgap and increases the Seebeck coefficient. Therefore, a high maximum figure of merit ZTmax is achieved, demonstrating the effectiveness of in-situ nanocompositing in developing thermoelectric systems based on atomistic doping-induced nanocompositing.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Muhammad Aizaz Ud Din, Syed Irfan, Sidra Jamil, Sami Ullah Dar, Qudrat Ullah Khan, Muhammad Shahrukh Saleem, Nanpu Cheng
Summary: Sodium-ion batteries have the potential for next-generation battery systems due to their cost-effective and similar energy-storage mechanism to lithium-ion batteries. However, the existing anode materials for sodium-ion batteries have poor performance, hindering their prospective application. In this study, a novel ultrathin Bi2Se3 layered nanosheets were synthesized to enhance sodium-ion storage performance, thanks to their stable graphene-like structure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Sidra Jamil, Muhammad Fasehullah, Bushra Jabar, Pan Liu, Muhammad Kashif Aslam, Yi Zhang, Shujuan Bao, Maowen Xu
Summary: This study focuses on the improvement of the kinetic properties of nickel-rich single-crystal cathodes through gradient doping of nickel and niobium, which forms a disordered buffer layer on the surface, enhancing the structural integrity and ion transport speed. The modified single-crystals show remarkable capacity retention and rate capability.
Article
Chemistry, Physical
Sidra Jamil, Chunmei Li, Muhammad Fasehullah, Pan Liu, Fangyuan Xiao, Han Wang, Shujuan Bao, Maowen Xu
Summary: A disordered passivation layer induced by Li/Ni antisite is introduced on LiNi0.94Co0.03Mn0.03O2 through dual doping of Ta and Al. This ultrathin disordered layer improves electrochemical performance by enhancing conductivities, stabilizing lattice oxygen, and alleviating transition metal dissolution and irreversible phase transition. The synergistic effect of Ta and Al co-doping with antisite-induced disordered structure is a promising approach for the commercialization of high-Ni layered oxide cathodes.
ENERGY STORAGE MATERIALS
(2022)
Article
Materials Science, Ceramics
Annam Butt, Sidra Jamil, Maryam Batool, Muhammad Fasehullah, Rehana Sharif, Ghulam Ali
Summary: This study successfully utilized a synthesis strategy to prepare high-performance Ni-rich layered oxide, and enhanced its cycling stability and discharge capacity by optimizing the sintering temperature.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Environmental
Sidra Jamil, Liang Yue, Chunmei Li, Muhammad Fasehullah, Muhammad Aizaz Ud Din, Wenting Yang, Shujuan Bao, Maowen Xu
Summary: Introducing gallium as a dopant in high-Ni, low Co/Mn layered oxide materials improves electrochemical performance and preserves structural and surficial integrity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Sidra Jamil, Gang Wang, Muhammad Fasehullah, Maowen Xu
Summary: This review article provides a comprehensive overview of the advantages and challenges of Ni-rich layered oxide cathode materials in terms of high energy density and high operating voltage, and summarizes the latest improvement methods. In addition, it explores the compatibility and interface challenges of Ni-rich cathodes with solid-state electrolytes, as well as the practical application prospects in the field of electromobility.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Muhammad Shoaib Bhutta, Tang Xuebang, Shakeel Akram, Chen Yidong, Xiancheng Ren, Muhammad Fasehullah, Ghulam Rasool, Muhammad Tariq Nazir
Summary: This study introduces a 2D-3D hybrid graphene oxide-diamond micro-composite material into polyimide films, which enhances the thermal conductivity and electrical insulation capability of the films.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Sidra Jamil, Han Wang, Muhammad Fasehullah, Muhammad Kashif Aslam, Bushra Jabar, Muhammad Aizaz Ud Din, Yi Zhang, Wei Sun, Shujuan Bao, Maowen Xu
Summary: Rational design and synthesis of multifunctional electrocatalysts are crucial for enhancing the electrochemical activity and reducing the cost of lithium-sulfur batteries. In this study, N-doped FeP nanospheres decorated N-doped carbon matrix were successfully synthesized, resulting in improved conversion kinetics and suppressed shuttle effect. The high reversible capacity and excellent cycling stability and rate capability of the FeP/C-N@S electrodes make them promising candidates for next-generation Li-S batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Muhammad Fasehullah, Feipeng Wang, Sidra Jamil, Zijia Shen, Chao Song
Summary: This study investigates the use of CdS and Al2O3 nanoparticles to prepare nanofluids for improved dielectric strength and thermal stability in transformers. The results show that the doping concentration of nanoparticles has an impact on the AC breakdown voltage of the nanofluids, with an optimal concentration observed for each material. However, the nanofluids exhibit higher AC breakdown voltages compared to the base fluid at all doping concentrations.
2022 IEEE 21ST INTERNATIONAL CONFERENCE ON DIELECTRIC LIQUIDS (ICDL)
(2022)
Article
Chemistry, Physical
Rajalaxmi Sahoo, C. Reshma, D. S. Shankar Rao, C. V. Yelamaggad, S. Krishna Prasad
Summary: This study investigates the influence of the flexible spacer parity of a guest photoactive liquid crystalline dimer on the photonic bandgap features of the cholesteric and twist grain boundary smectic C phases of the host molecule. The results show that the parity of the photoactive dimer affects the width of the photonic bandgap and the blue-shift of the cholesteric phase. Additionally, the parity of the dimer also affects the layer spacing and two-dimensional periodicity of the liquid crystalline phases.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Sara Rozas, Alberto Gutierrez, Mert Atilhan, Alfredo Bol, Santiago Aparicio
Summary: This study presents a multiscale theoretical investigation on the use of bifunctional hydrophobic Deep Eutectic Solvent for carbon capture using tetrapropylammonium chloride, acetic acid, and ethanolamine. The characterization includes nanoscale analysis of CO2 absorption mechanisms and changes in liquid phase properties during gas capture.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Tabouli Eric Da-yang, Alhadji Malloum, Jean Jules Fifen, Mama Nsangou, Jeanet Conradie
Summary: In this study, the potential energy of different glycine tautomers and their interaction with Cu2+ cations was investigated. The results showed that the solvation medium and the presence of Cu2+ cations influenced the stability of glycine tautomers.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Xiaoliang Gou, Nan Ye, Qingqing Han, Junjie Cui, Long Yi Jin
Summary: In this study, amphiphilic rod-coil molecules with rigid DSA parts and flexible oligoether chains were designed and their assembly capacities were investigated. The morphology of the molecular aggregates was influenced by the pH of the solution and UV light, and the aggregates showed adsorption capacity for nitroaromatic compounds.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Shuang Liu, Liyan Shan, Cong Qi, Wenhui Zhang, Guannan Li, Bei Wang, Wei Wei
Summary: Optimizing the design of styrene-butadiene-styrene copolymer (SBS) is crucial for producing cost-effective SBS modifiers and improving road quality. This study examined the influence of SBS content and molecular structure on viscosity and compatibility. The results showed that the viscosity contribution of SBS is determined by its molecular structure and phase morphology.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Artem A. Petrov, Ekaterina A. Titova, Aydar A. Akhmadiyarov, Ilnaz T. Rakipov, Boris N. Solomonov
Summary: This work focuses on the thermochemistry of solvation of azeotropes. The enthalpies of dissolution of azeotropes in different mediums were determined, and the impact of the structure of the azeotropes on their properties in solution was discussed. A correlation between enthalpies of solvation and molar refraction was used to determine the vaporization enthalpies of azeotropes for the first time. The results were found to be consistent with literature data, obtained using direct and calculated methods. These findings contribute to the analysis of the structure-property relationships of azeotropes.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
L. V. Kamaeva, E. N. Tsiok, N. M. Chtchelkatchev
Summary: Understanding the correlations between liquids and solids allows us to predict the thermodynamic parameter range favorable for the formation of intriguing solid phases by studying liquids. In this study, we experimentally and theoretically investigated an Al-Cu-Co system within different composition ranges, and identified high-temperature solid phases. Our findings demonstrated the correlation between the boundaries of different solid phases and undercooling and viscosity in the concentration area.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
R. Aneesh Kumar, S. Jamelah Al-Otaibi, Y. Sheena Mary, Y. Shyma Mary, Nivedita Acharjee, Renjith Thomas, Renjith Raveendran Pillai, T. L. Leena
Summary: In this study, the interactions between doped and pristine coronenes and adenine nucleobases were investigated using Density Functional Theory. The optimal configurations, adsorption energies, charge transfer, and electrical properties of each complex were calculated. It was found that doped coronene had stronger adsorption strength and charge transfer compared to pristine coronene. The stability of the complexes was attributed to non-covalent interactions in the interactive region. The change in electrical conductivity of coronenes after adsorption suggested their sensitivity towards DNA bases. The predicted energy gap and prolonged recovery time for adenine-coronene configurations indicated the potential application of pristine/doped coronene in DNA detection.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Gang Zhou, Yongwei Liu, Biao Sun, Zengxin Liu, Cuicui Xu, Rulin Liu, Qi Zhang, Yongmei Wang
Summary: The CFD-DEM method was used to simulate the dust deposition pattern in the bronchus of anchor digging drivers, revealing the highest dust concentration in the vortex region of the working face. The study also found a positive correlation between dust particle diameter and bronchial deposition rate, and a negative correlation with alveolar deposition rate.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Yan Zhang, Yafei Luo, Lingkai Tang, Mingyan E, Jianping Hu
Summary: This study investigates the effects of different transition metal decorations on B12N12 nanocages on the adsorption properties of nitrosourea drugs using computational methods. The results reveal the presence of weak non-covalent interactions between metals and nanocages, and the interaction between drugs and nanocages plays a significant role in drug adsorption. Compared to free drugs, the adsorption of drugs on nanocages can facilitate electron transfer, reduce energy gaps and chemical hardness, indicating activity at the target site.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
C. I. Alcolado, J. Poblete, L. Garcia-Rio, E. Jimenez, F. J. Poblete
Summary: In this study, the selective oxidation of aromatic aldehydes was investigated using Ru(VI) as a catalyst and hexacyanoferrate (III) as a cooxidant in an alkaline medium. The reaction mechanism involves complex reaction orders for the oxidant and the aromatic aldehyde, while the reaction order for Ru(VI) is one. The proposed mechanism includes two catalytic cycles and the formation and decomposition of complexes. Quantitative structure-activity relationship analysis showed that deactivating groups in the para-position enhance the process.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Inez A. Barbieri, Marcos L. S. Oliveira, Franciele S. Bruckmann, Theodoro R. Salles, Leonardo Zancanaro, Luis F. O. Silva, Guilherme L. Dotto, Eder C. Lima, Mu. Naushad, Cristiano R. Bohn Rhoden
Summary: This study evaluated the adsorption of zolpidem on magnetic graphene oxide and synthesized magnetic graphene oxide adsorbents for zolpidem removal. The best magnetic nanoadsorbent was found to have a removal percentage of 87.07% at specific pH and temperature conditions. The results suggest that the removal of zolpidem is related to the surface chemistry of the adsorbent rather than the surface area of graphene oxide. The adsorbent showed excellent adsorption efficiency and magnetic behavior, making it a promising material for removing zolpidem from aqueous solutions.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Hongyan Huang, Chunquan Li, Siyuan Huang, Yuling Shang
Summary: This study examines the sensitivity of the thermal conductivity of water-based alumina nanofluids to changes in concentration, sphericity, and temperature. The results show that volume fraction and temperature have a significant impact on the thermal conductivity, while sphericity also needs to be considered. A support vector machine regression model was created to analyze the sensitivity of the thermal conductivity to different parameters. The findings indicate that temperature, sphericity, and volume fraction are the most sensitive variables.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Correction
Chemistry, Physical
V. M. Pergamenshchik, T. Bryk, A. Trokhymchuk
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Valentyn Rudenko, Anatolii Tolochko, Svitlana Bugaychuk, Dmytro Zhulai, Gertruda Klimusheva, Galina Yaremchuk, Tatyana Mirnaya, Yuriy Garbovskiy
Summary: This paper reports on the synthesis, structural characterization, spectral and nonlinear-optical properties of glass nanocomposites made of glass forming ionic liquid crystals and nanoparticles. The study reveals that by exciting the nanocomposites within their absorption band, a control over effective optical nonlinearities can be achieved, allowing the modification of the magnitude and sign of the effective nonlinear absorption coefficient. The proposed strategy using metal-alkanoates based glass-forming ionic liquid crystals and nanoparticles shows great potential for the development of nanophotonics and plasmonics technologies.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
