Article
Chemistry, Physical
Wenjie Sun, Qingyi Liu, Jiateng Zhao, Hafiz Muhammad Ali, Zafar Said, Changhui Liu
Summary: With the development of electronic machinery, the traditional heat exchange working fluid is inadequate in extreme working environments. Deep eutectic solvent, as a new type of fluid, demonstrates promising thermal stability, low cost, and non-toxicity through hydrogen bond association, making it an efficient heat transfer working fluid. This study utilized glycerol/sodium acetate trihydrate deep eutectic solvent as a base solution, prepared nanofluids filled with TiO2, Al2O3, and Fe2O3 nanoparticles, and discussed the mechanism of thermal conductivity change at the atomic and microscopic levels. Experimental results showed that the prepared deep eutectic solvent system reduced viscosity by 58.03% and increased thermal conductivity by 17.2% compared to glycerol at 25 degrees Celsius. Furthermore, the impact of nanoparticles on thermal conductivity and specific heat capacity was investigated, with thermal conductivity being improved by the addition of Fe2O3 nanoparticles and the specific heat capacity of nanofluids more than doubling after nanoparticle incorporation.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Jolanta Sobczak, Javier P. Vallejo, Julian Traciak, Samah Hamze, Jacek Fal, Patrice Estelle, Luis Lugo, Gawel Zyla
Summary: This study summarizes the experimental results on the thermophysical and electrical properties of ethylene glycol based nanofluids containing carbon black nanoparticles. The specific surface area was found to have a significant influence on the fundamental properties of nanofluids developed with carbon nanoparticles, with the enhancement of electrical conductivity being one of the highest reported in the literature.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Mohd Zulkifly Abdullah, Kok Hwa Yu, Hao Yuan Loh, Roslan Kamarudin, Prem Gunnasegaran, Abdusalam Alkhwaji
Summary: The study found that the density, thermal conductivity, and viscosity of Cu-Ni hybrid nanofluids increase with volume fraction, while the specific heat capacity at constant pressure decreases with volume fraction.
Article
Chemistry, Multidisciplinary
Naser Ali
Summary: This study investigates the thermophysical properties and dispersion stability of graphene-based nanofluids, finding that the fabrication temperature, nanomaterial concentration, and surfactant ratio have an impact on the effective properties and stability of the suspension. The specific heat capacity is highly sensitive to the graphene and surfactant concentrations, while the preparation temperature affects the nanofluid viscosity and thermal conductivity.
Article
Thermodynamics
Wenshuang Tian, Yang Xiao, Beiting Zhou, Guangzhao Qin, Xiong Zheng
Summary: Deep eutectic solvents (DESs), a new type of green solvent, are considered as replacements for ionic liquids in various applications. Therefore, studying the thermophysical properties of DESs is crucial for their applications. In this research, DESs containing triethylene glycol and choline chloride (ChCl) were synthesized in different molar ratios, and their thermal conductivity, viscosity, and density were systematically investigated. The addition of ChCl decreases the thermal conductivity but increases the viscosity and density of DESs, and the dependence of these properties on the molar fraction is analyzed.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Review
Thermodynamics
Naman Parashar, Syed Mohd Yahya
Summary: Hybrid nanofluids are gaining popularity due to their superior thermophysical properties compared to mono nanofluids. The properties of hybrid nanofluids can be adjusted by changing the type and mixture ratio of nanoparticles. Various parameters, including nanoparticles mixture ratio and relative diameter, have been found to affect the thermophysical and rheological properties of hybrid nanofluids.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Energy & Fuels
Syed Muhammad Mujtaba Rizvi, Donghyun Shin
Summary: Li2CO3-K2CO3 and Li2CO3-Na2CO3 pure salt eutectic mixtures and their nanofluids were synthesized and tested for specific heat capacity, viscosity, and thermal stability. The experimental results of all four systems were evaluated for their potential use as thermal energy storage media in concentrated solar power.
JOURNAL OF ENERGY STORAGE
(2021)
Review
Chemistry, Physical
Kimia Jafari, Mohammad Hossein Fatemi, Patrice Estelle
Summary: Various strategies are proposed and tested to enhance the heat transfer performance of nanofluids, with DES-based nanofluids considered as a promising and environmentally friendly option. Increasing temperature and volume fraction of nanoparticles can further improve their thermal properties.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Electrochemistry
Yan Zhang, Yafei Wang, Yangming Zhang, Jingxin Zhao, Yiyang Liu, Ying Guan, Yongjun Zhang
Summary: In this study, a novel and simple water-salt-in-deep eutectic solvent (WS-DES) strategy was developed to enhance the ionic conductivity, reduce the viscosity, and lower the freezing temperature of deep eutectic solvent (DES). The WS-DES electrolyte showed significantly improved performance compared to the initial DES in supercapacitor devices, with higher specific capacitance, better rate performance, lower IR voltage drop, and lower internal resistance. Furthermore, the WS-DES electrolyte demonstrated excellent electrochemical stability even at extreme conditions of -40 degrees C.
BATTERIES & SUPERCAPS
(2022)
Review
Materials Science, Ceramics
Ghassan Fadhil Smaisim, Doaa Basim Mohammed, Ahmed M. Abdulhadi, Khusniddin Fakhriddinovich Uktamov, Forat H. Alsultany, Samar Emad Izzat, Mohammad Javed Ansari, Hamzah H. Kzar, Moaed E. Al-Gazally, Ehsan Kianfar
Summary: Nanofluids are liquid suspensions of hard nanometer-sized particles suspended in a base fluid. Hybrid nanofluids, which consist of two distinct forms of nanoparticles diffused in base fluids, display strong heat transfer efficiency and have a wide range of thermal applications.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Thermodynamics
Yucui Hou, Baizhang Zhang, Minjie Gao, Shuhang Ren, Weize Wu
Summary: This study investigated the function of two types of deep eutectic solvents (DESs) based on ethanediol and betaine/L-carnitine for absorbing low-concentration SO2. The densities, viscosities, and specific heat capacities of the DESs were measured at different temperatures and SO2 contents. The results showed that temperature increase could decrease the densities and viscosities of the DESs, but increase their specific heat capacities. An increase in SO2 content could increase the densities and viscosities of the DESs. An increase in ethanediol content could decrease the densities and viscosities of the DESs, but increase their specific heat capacities.
JOURNAL OF CHEMICAL THERMODYNAMICS
(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
Chemistry, Physical
Ivan Carrillo-Berdugo, Javier Sampalo-Guzman, Ricardo Grau-Crespo, David Zorrilla, Javier Navas
Summary: The chemistry of interfaces and its relation with energy storage at and transport through solid-liquid interfaces in heat transfer nanofluids is a very unexplored terrain. The magnitude of the changes in specific heat and thermal conductivity of the base fluid, upon dispersion of a nanomaterial, depends on the surface chemistry of that nanomaterial. Pd and Au nanoplates provide enhancements in specific heat and thermal conductivity at high temperature, and the differences in their surface chemistry and solid-liquid interface structures contribute to these variations.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Ceramics
Nazmul Huda, Mark A. Whitney, Mohammad H. Razmpoosh, Adrian P. Gerlich, John Z. Wen, Stephen F. Corbin
Summary: Ceramic materials have the potential to store thermal energy with reasonable cost, with their thermodynamic properties depending on temperature and energy storage capacity varying significantly with microstructure and porosity. The correlation between microstructure change and energy storage capacity is explored through characterization of alumina specimens.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Saeed Rahman Salari, Maryam Khavarpour, Mojtaba Masoumi, Saba Mosivand
Summary: Nanofluids, a new generation of heat transfer fluids, face challenges in terms of nanoparticle stability in base liquids. In this study, cobalt oxide (Co3O4) and tin dioxide (SnO2) nanoparticles were successfully synthesized and dispersed in base fluid using surfactants, acidity changes, and ultrasonic vibration. The highest stability of SnO2 and Co3O4 nanofluids was observed at pH values of 7.5 and 8, respectively. Ultrasonication time also played a crucial role in improving particle dispersion. The thermophysical properties of nanofluids were investigated under different particle concentrations and temperatures, showing that density and viscosity decrease with temperature increase and particle mass fraction decrease, while specific heat capacity increases with temperature. Moreover, the thermal conductivity of nanofluids increases non-linearly with mass fraction and temperature, with maximum enhancements of 59% and 72.5% achieved for Co3O4 and SnO2 nanofluids, respectively.
MICROFLUIDICS AND NANOFLUIDICS
(2022)
Correction
Engineering, Mechanical
Yanbin Zhang, Hao Nan Li, Changhe Li, Chuanzhen Huang, Hafiz Muhammad Ali, Xuefeng Xu, Cong Mao, Wenfeng Ding, Xin Cui, Min Yang, Tianbiao Yu, Muhammad Jamil, Munish Kumar Gupta, Dongzhou Jia, Zafar Said
Review
Energy & Fuels
Haris M. Khalid, Zimran Rafique, S. M. Muyeen, Abdul Raqeeb, Zafar Said, R. Saidur, Kamaruzzaman Sopian
Summary: Photovoltaic panels are an emerging component of renewable energy integration. However, the accumulation of dust can significantly impact the performance and efficiency of PV systems. Therefore, it is important to study the impact of dust and develop effective cleaning mechanisms to restore the system's performance and power generation output.
Article
Engineering, Mechanical
Mingzheng Liu, Changhe Li, Yanbin Zhang, Min Yang, Teng Gao, Xin Cui, Xiaoming Wang, Haonan Li, Zafar Said, Runze Li, Shubham Sharma
Summary: The existing theoretical model of grinding temperature is based on grain homogeneity and continuous heat source distribution, ignoring the influence of interference between effective grains and the workpiece on temperature. This study proposes an improved temperature model based on a discrete heat source, which reveals the temperature variation law of a workpiece in an actual grinding process.
TRIBOLOGY INTERNATIONAL
(2023)
Review
Engineering, Mechanical
Xin Cui, Changhe Li, Yanbin Zhang, Wenfeng Ding, Qinglong An, Bo Liu, Hao Nan Li, Zafar Said, Shubham Sharma, Runze Li, Sujan Debnath
Summary: The substitution of biolubricant for mineral cutting fluids in aerospace material grinding is an important development direction, but the complex process of grinding difficult-to-machine materials presents challenges such as tool wear and workpiece damage. This review compares the grinding performance of different materials, analyzes the effects of the physicochemical properties of biolubricants on grindability, and provides recommendations for the use of biolubricants in different material grinding processes.
FRONTIERS OF MECHANICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Zafar Said, Prabhakar Sharma, Quach Thi Bich Nhuong, Eric Lichtfouse, Haris M. Khalid, Rafael Luque, Xuan Phuong Nguyen, Anh Tuan Hoang, Bhaskor J. Bora
Summary: Food waste is a serious environmental and social issue, and efficient management using emerging technologies like IoT, AI, and ML is necessary. By analyzing IoT sensor data using AI and ML techniques, real-time decision-making and process optimization can be achieved, leading to improved bioprocess monitoring and the generation of value-added products and chemicals, thus contributing to environmental sustainability and food security.
BIORESOURCE TECHNOLOGY
(2023)
Review
Engineering, Chemical
Seyed Masoud Parsa, Fatemeh Norozpour, Shahin Shoeibi, Amin Shahsavar, Sadegh Aberoumand, Masoud Afrand, Zafar Said, Nader Karimi
Summary: This review focuses on the advanced cooling systems for Li-ion batteries, including air/liquid cooling, PCM, refrigeration, heat pipe, and thermoelectric technologies. Exergy, economic, and environmental (3E) analysis are used to assess the important parameters in battery thermal management, and the application of data-driven and machine learning approaches in this field is discussed.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Engineering, Chemical
Zafar Said, Prabhakar Sharma, Bhaskor Jyoti Bora, A. K. Pandey
Summary: By adding COOH functional groups to multi wall carbon nanotubes, the hydrophilicity and stability of nanofluids can be enhanced. The experimental results show that after 80 minutes of sonication, the nanofluid with a volume concentration of 0.10% exhibits the best long-term stability and thermal conductivity. The XGBoost-based model outperforms the GPR-based model in predicting the effects of sonication on thermal conductivity.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Thermodynamics
Mallikarjun B. Patil, K. C. Shobha, Suvanjan Bhattacharyya, Zafar Said
Summary: In this article, the authors investigated the combined effects of Soret and Dofour effects on Casson nanofluid flow in a vertical channel considering thermal radiation. They also analyzed the entropy generation in the system. The governing equations were modeled using Buongiorno's model with Brownian motion and thermophoresis effects. Non-dimensional parameters were used to non-dimensionalize the equations, and the resulting nonlinear and coupled equations were solved using the differential transform method and MATLAB bvp4c code based on finite difference method. The results showed good agreement between the two methods. It was found that Casson fluid parameter, Dufour parameter, and Soret parameter all minimized the entropy generation in the system.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Engineering, Mechanical
Dongzhou Jia, Changhe Li, Jiahao Liu, Yanbin Zhang, Min Yang, Teng Gao, Zafar Said, Shubham Sharma
Summary: Minimum quantity lubrication (MQL) is an efficient and clean alternative to flooding workpiece machining. Electrostatic atomization has the advantages of small droplet diameter, high uniformity of droplet size, and strong coating, making it superior to pneumatic atomization. However, the influence of jet parameters and electrical parameters on the average diameter of droplets is not clear.
Review
Engineering, Chemical
Mudasar Zafar, Hamzah Sakidin, Mikhail Sheremet, Iskandar B. B. Dzulkarnain, Abida Hussain, Roslinda Nazar, Javed Akbar Khan, Muhammad Irfan, Zafar Said, Farkhanda Afzal, Abdullah Al-Yaari
Summary: The rapid changes in nanotechnology have led to significant advancements in the study of nanofluids, which are colloid suspensions of nanoparticles in base fluids known for their remarkable heat transfer ability. Mathematical models and varied geometries have been used to enhance heat transfer rates in nanofluids. This article provides an overview of the Tiwari and Das nanofluid models, studying the effects of different geometries, nanoparticles, and their physical properties on heat transfer.
Review
Thermodynamics
Khalid Hamid, Uzair Sajjad, Marcel Ulrich Ahrens, Shuai Ren, P. Ganesan, Ignat Tolstorebrov, Adeel Arshad, Zafar Said, Armin Hafner, Chi-Chuan Wang, Ruzhu Wang, Trygve M. Eikevik
Summary: High temperature heat pumps (HTHP) are a well-established and sustainable technology for processing temperatures below 100 degrees C, especially when combined with renewable energy. The next frontier is to enhance the working temperature range to serve the 100-200 degrees C range, reducing energy consumption and CO2 emissions in industrial processes.
APPLIED THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Zafar Said, Misbah Iqbal, Aamir Mehmood, Thanh Tuan Le, Hafiz Muhammad Ali, Dao Nam Cao, Phuoc Quy Phong Nguyen, Nguyen Dang Khoa Pham
Summary: This study provides an overview of the advancements made in the field of solar thermal collectors, with a focus on using nanofluids as heat transfer fluids. It covers different types of solar collectors and their potential applications in various fields. The study also discusses environmental concerns and various challenges associated with using nanofluids in solar collectors.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Review
Energy & Fuels
Shobhit Khanna, Rabindra Prasad, C. P. Jawahar, Zafar Said
Summary: Recent advancements in energy conversion technologies have addressed global challenges and improved energy conservation, pollution mitigation, cost-effectiveness, sustainable production, and socio-economic development. Utilizing natural waste to generate synthetic fuels represents a viable strategy.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Engineering, Mechanical
Mohammad Reza Chalak Qazani, Navid Aslfattahi, Vladimir Kulish, Houshyar Asadi, Michal Schmirler, Zafar Said, Asif Afzal, H. M. Dipu Kabir, Muslum Arici
Summary: This study presents an optimised deep learning method, using temperature and nanoflake concentration, to calculate dynamic viscosity. Long short-term memory (LSTM) is employed as the most suitable method, with dropout layers to prevent overshooting during training. Bayesian optimisation technique is used to extract optimal hyperparameters of LSTM, achieving the highest performance in viscosity prediction. The proposed method is compared to multilayer perceptron (MLP) and yields significantly better results in terms of mean-squared error, root-mean-square error, and R-square.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2023)
Review
Energy & Fuels
Tong Xiao, Long Geng, Yucheng Dai, Jiateng Zhao, Changhui Liu
Summary: UV-cured polymerization systems are widely used in coatings, adhesives, and electronic packaging due to their fast curing speed and mild conditions. The cured polymers can encapsulate solid-liquid phase change materials, solving the leakage problem and providing heat storage and thermal management functions. UV-cured polymer-based 3D printing technology offers flexible solutions for complex thermal management and multifunctional phase change material integration. This review summarizes the strategies for UV-cured polymers in phase change energy storage and discusses their classification, curing mechanism, preparation strategies, research progress, and future directions in 3D printing phase change materials.
JOURNAL OF ENERGY STORAGE
(2023)
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)
