Article
Materials Science, Multidisciplinary
Fabien Krebs, Oliver Hoefft, Frank Endres
Summary: The interface between ionic liquids (ILs) and metals, particularly in electrochemical deposition and nanoscale tribology applications, was studied. The interaction between [Py-1,Py-4]TFSI and [EMIm]TFSI ILs and platinum was found to be minimal, while strong interaction with the surface was observed in the case of [EMIm]TFSI. On the other hand, massive decomposition of both ILs occurred on the aluminum surface. The spectra revealed cleavage of C-F or N-S bonds in the [TFSI](-) anion and the appearance of various decomposition products at the interface.
Article
Thermodynamics
Xinmiao Liang, Huichun Jiang, Xuhai Pan, Min Hua, Juncheng Jiang
Summary: This study optimized the properties of NC as a propellant binder by introducing [Bmim][NTf2] as an additive, resulting in NC-NTf(2) with low onset decomposition temperature, low activation energy, and high energy release rate. The thermal degradation processes and essential thermodynamic parameters of NC-P, NC-NTf2, and NC-NTf2-eth were investigated to evaluate the overall performance of NC as a propellant binder.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Rui-Jie Xu, Shang-Hao Liu, Ke-Fan Wu, Chang-Fei Yu
Summary: Coal spontaneous combustion endangers the safety of the coal industry and results in the emission of a large amount of carbon dioxide, which poses a threat to the ecological environment. This study demonstrates that ionic liquid can be used as a flame retardant to inhibit the spontaneous combustion of coal.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Electrochemistry
Chrysanthus Andrew, Mani Jayakumar
Summary: This study explores low-temperature electrodeposition strategies using ionic liquids to obtain lanthanides in metallic form. The electrochemical behavior of samarium(III) and its electrodeposition in a specific ionic liquid were investigated. The results provide insights into the electrochemical behavior and deposition process of samarium using ionic liquids.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Aycan Altun, Osman Nuri Sara
Summary: In this study, the densities and viscosities of binary mixtures of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide, [bmim][NTf2], and ethylene glycol (EG) were experimentally measured. A first-order polynomial and Vogel-FulcherTammann equation were used to estimate the densities and viscosities of the mixtures, respectively. The excess molar volume, viscosity, and Gibbs energy of activation for viscous flow were calculated and fitted to the Redlich-Kister equation. The thermal expansion coefficients and partial and apparent molar volumes of [bmim][NTf2] and EG in their binary mixtures were also investigated.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Thermodynamics
Chan-Cheng Chen, Yi-Syuan Huang
Summary: It is important to evaluate the thermal stability of the ionic liquid [Bmim][NTf2] in air atmosphere when used as an electrolyte for supercapacitors. The study found that different crucible materials have an effect on the thermal behavior results of the ionic liquid. It is recommended to carefully consider the material effect of the container when using the TGA/DSC method to evaluate the thermal stability of the ionic liquid [Bmim][NTf2] in air atmosphere.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Physical
Chunhui Li, Hui He, Chenxi Hou, Mingjian He, Caishan Jiao, Qingjiang Pan, Meng Zhang
Summary: The complex behavior of extractants in ionic liquids has been studied through theoretical calculations and simulations, revealing that ion pairs are favored over separated ions and the interaction with the extractant is primarily driven by electrostatic forces. The concentration of the extractant greatly influences the local structures and interactions.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Yifeng Chen, Shuailong Song, Ning Li, Jian Wu, Xiaohua Lu, Xiaoyan Ji
Summary: The development of a novel absorbent for CO2 separation technology was investigated in this study. The experimental results showed that the developed technology had a significantly higher CO2 mass-transfer rate and lower cost compared to current commercialized technology. The absorption ability index successfully predicted the performance of CO2 separation technologies.
Article
Thermodynamics
Dorota Warminska, Iwona Cichowska-Kopczynska
Summary: This work investigates the physicochemical properties of three binary mixtures containing ionic liquids mixed with 2-propanol. The effects of temperature, cation, and anion on properties such as density, speed of sound, refractive index, and viscosity were analyzed. Excess properties were calculated and correlated with composition data using the Redlich-Kister polynomial equation.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2022)
Article
Engineering, Chemical
Li-Chi Hung, Nai-Hsin Pan
Summary: This study investigates the thermal behavior of the ionic liquid [EMIM][Tf2N] and reveals its reactivity hazard at high temperatures, providing valuable thermal safety data for sustainable construction applications. The study also considers the impact of different storage containers on thermal safety.
Article
Chemistry, Physical
Kana Ishisone, Guido Ori, Mauro Boero
Summary: This study provides a detailed insight into the structural and electronic interactions in the ionic liquid targeted for low-power electronics and optoelectronic devices. Through first principles dynamical simulations and long-lasting dynamical simulations, the nature of bonding and non-bonding interactions, conformational changes, induced dipole moments, and the mobilities of the ionic species are revealed. Additionally, the analysis of the electronic structure and charge distributions helps to understand the electrostatic interactions, hydrogen bonding properties, and the infra-red and dielectric response of the system.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Hong Chen, Zonghua Wang, Xianzhen Xu, Shida Gong, Zhiwu Yu, Yu Zhou
Summary: This study investigated the hydrogen bonding interactions between ether-functionalized IL and co-solvents at different concentrations using FTIR, excess infrared spectroscopy, and quantum chemical calculations. It was found that the strength of hydrogen bonds increased during dilution with co-solvents, with the EOMIMTFSI-DMSO system exhibiting the strongest interactions. The main interaction sites and types varied among the studied systems, providing insights into the microscopic properties of ether-functionalized ILs.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Anjani R. K. Gollakota, Venkata Subbaiah Munagapati, Chi-Min Shu, Jet-Chau Wen
Summary: The study investigated the ability of an ionic liquid-activated hazel sterculia foetida L. seed-based sorbent to remove Cr (VI) and Pb (II). Various factors were considered under different conditions. The functionalization of the sorbent with ionic liquids improved its surface characteristics, leading to enhanced adsorption performance. Desorbing agents effectively recovered the sorbent while maintaining its adsorption capacity, and the sorbent showed promising reusability.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Yuxin Jiang, Xinyuan Zhang, Xianzhen Xu, Shida Gong, Zonghua Wang, Yu Zhou
Summary: Studies have shown that mixing two or more ionic liquids (IL) to form IL mixtures has become a new research hotspot for designing ILs with desirable properties. However, there have been fewer fundamental studies on the interactions and mixing behaviors of IL mixtures. In this work, two ILs containing the same cation [EMIM]+ were used to prepare IL mixtures, and their mixing behavior was investigated through experimental methods and quantum chemical calculations. The main conclusions are: (1) DMSO forms stronger hydrogen bonds with EMIMTFSI than with EMIMBF4. (2) The addition of EMIMBF4 weakens the hydrogen bonding interactions in the EMIMTFSI-EMIMBF4 system and strengthens the coulombic interactions. (3) With dilution, the C2-H bond experiences the smallest changes, suggesting that it remains the main interaction site. (4) New formation complexes between EMIMBF4 and EMIMTFSI were confirmed through excess infrared spectra.
Article
Thermodynamics
Jan Pavlicek, Grozdana Bogdanic, Ivan Wichterle
Summary: In this study, vapor-liquid equilibrium data near azeotropic points of the title system were measured at different temperatures. A newly-developed method based on relatively small amounts of input data was used to process the data, providing a thermodynamic description of azeotropic behavior.
FLUID PHASE EQUILIBRIA
(2022)
Article
Thermodynamics
Milana M. Zaric, Milan Vranes, Sinisa Bikic, Aleksandar Tot, Snezana Papovic, Teona Teodora Borovic, Mirjana Lj. Kijevcanin, Ivona R. . Radovic
Summary: This study investigated the addition of caffeine to ethylene glycol and its effect on thermodynamic properties. Experimental measurements showed that the addition of caffeine had negligible impact on the properties studied, and it exhibited less temperature dependence compared to the mixture of ethylene glycol and water.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2022)
Article
Chemistry, Physical
Dora Takacs, Tamas Peter, Zsofia Vargane Arok, Bojana Katana, Snezana Papovic, Slobodan Gadzuric, Milan Vranes, Istvan Szilagyi
Summary: This study investigated the influence of gemini surfactants (GSs) on the charging and aggregation features of anionic sulfate modified latex (SL) particles using light scattering techniques. The results showed that GSs with short alkyl chains aggregated the particles through charge screening, while GSs with longer alkyl chains neutralized or overcharged the particles, leading to destabilization or restabilization of the dispersions, respectively.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Chemistry, Physical
Jasmina Musovic, Milan Vranes, Snezana Papovic, Slobodan Gadzuric, Slavica Razic, Tatjana Trtic-Petrovic
Summary: This study designed and synthesized two water-soluble functionalized ionic liquids (FILs) for the selective extraction of Cd(II) and Pb(II) from river sediments. It was found that the ligand anion and the cation were responsible for the efficient extraction and formation of the aqueous biphasic systems (ABS), respectively. The partition coefficients for Cd(II) and Pb(II) using [bmim][mbt] were 408 and 180, respectively. The optimal conditions for the direct extraction of Cd(II) and Pb(II) from sediments were investigated and the proposed method showed a high level of greenness.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Renato Tomas, Milan Vranes, Antonija Kreso, Zdzislaw Kinart, Teona Teodora Borovic, Snezana Papovic
Summary: This study investigates the volumetric properties of ten binary mixtures containing N3-substituted 1-methylimidazofium chloride ionic liquids in butan-2-ol or butan-2-one solvents. The results show that the structure of the ionic liquids is dependent on the interactions with the solvents.
JOURNAL OF SOLUTION CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Aleksandra Roganovic, Milan Vranes, Nikola Cvjeticanin, Xiaoping Chen, Snezana Papovic
Summary: In this study, a functionalized zwitterionic compound C(1)C(4)imSO(3) was synthesized and used as an additive in LiTFSI/C(2)C(2)imTFSI ionic liquid-based electrolytes for lithium-ion batteries. The structure and purity of C(1)C(4)imSO(3) were confirmed using NMR and FTIR spectroscopy. The thermal stability of C(1)C(4)imSO(3) was examined using TG-MS and DSC. The LiTFSI/C(2)C(2)imTFSI/C(1)C(4)imSO(3) system showed improved lithium-ion intercalation/deintercalation properties, such as capacity retention and Coulombic efficiency, compared to the electrolyte without additive.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Bojan Jankovic, Snezana Papovic, Milan Vranes, Teodora Knezevic, Sanja Przulj, Sasa Zeljkovic, Suzana Velickovic, Filip Veljkovic, Dijana Jelic
Summary: A powdered PVA/CaCO3 nanocomposite carrier was successfully fabricated for loading vitamin D-3 (VD3). The VD3/PVA/CaCO3 nanocomposite scaffold showed the existence of calcite staircase dendrites and enhanced thermal stability of VD3. The characterization techniques included XRD, FTIR, MALDI-MS, BET-NLDFT, SEM, TG-DTG, and coupled TG-MS.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Marko Pavlovic, Heman Kumar Ramiya Ramesh Babu, Saveh Djalali, Zoran Pavlovic, Milan Vranes, Lukas Zeininger
Summary: A method for visualizing and quantifying surfactant effectiveness in different electrolyte environments using reconfigurable Janus emulsions as optical probes is presented. The effect of different types and concentrations of salt counter-ions on the surfactant surface excess was investigated for both ionic and non-ionic surfactants. It was found that the interfacial tensions of the ionic surfactants varied significantly, while the effect on the non-ionic surfactant was less pronounced. Overall, this study demonstrates the potential of Janus emulsions as powerful tools for studying surfactant properties at liquid interfaces.
Article
Chemistry, Physical
Ivana Stojkovic, Natasa Todorovic, Jovana Nikolov, Milan Vranes, Snezana Papovic, Milka Zecevic
Summary: This study explores the screening technique of 137Cs concentration dissolved in water using the Cherenkov counting method. Prompt detection of 90Sr/90Y and 137Cs is crucial in nuclear emergencies or potential radioactive leakage from power plants. The researchers present a novel LSC method that allows quick evaluation of water samples' radioactive contamination status without any sample pre-treatment. By adding ionic liquid, they improve the method's efficiency and detection limit, making it 30% more efficient with a 4 times lower detection limit. They also investigate interference with 90Sr/90Y and distinguish individual radionuclides in the Cherenkov spectrum.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Chemistry, Physical
Jovana Panic, Snezana Papovic, Bojan Sarac, Romana Cerc Korosec, Maksim Rapaic, Slobodan Gadzuric, Marija Bester-Rogac, Milan Vranes
Summary: In this study, the compatibility and interaction of a mixture of the active pharmaceutical ingredient ionic liquid (API-IL) benzocainium ibuprofenate and natural deep eutectic solvents (NADESs) of menthol:decanoic acid were investigated. These hydrophobic API-IL-NADES mixtures provide a potential solution for the topical application of ionic liquids. The synthesized and characterized ionic liquid and NADESs were examined using spectroscopy and calorimetry, and the thermodynamic properties of the mixtures were measured to understand the influence of NADES components on molecular and solvent performance.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Biochemistry & Molecular Biology
Jovana Panic, Maksim Rapaic, Slobodan Gadzuric, Milan Vranes
Summary: Due to their appealing physiochemical properties, deep eutectic solvents (DESs) and ionic liquids (ILs) are widely used in various research fields and industries, especially in the pharmaceutical industry. This research focuses on the thermodynamic properties of a deep eutectic solvent made from natural molecules and an ionic liquid based on active pharmaceutical ingredients. The study also estimates the solvent properties and molecular interactions of DESs and ILs mixtures at different temperatures and concentrations.
Article
Chemistry, Multidisciplinary
Nevena Grujic-Letic, Emilia Gligoric, Branislava Teofilovic, Milan Vranes, Slobodan Gadzuric
Summary: This study presents the development, optimization, and application of an analytical method for the determination of ibuprofen in surface water samples. Caffeine concentrations were also determined as an indicator of human waste, and the maximum risk indexes for aquatic organisms were calculated. The results showed that ibuprofen and caffeine had different levels of risk on aquatic organisms, suggesting the need for continuous monitoring and possible prevention measures.
ACTA CHIMICA SLOVENICA
(2023)
Article
Chemistry, Multidisciplinary
Hani El Moll, Khalaf M. Alenezi, Abdallah O. Alshammari, Ashanul Haque, Jamal Humaidi, Raoudha Soury, Eid M. S. Azzam, Fahad Abdulaziz, Salman Latif, Milan Vranes
Summary: Despite the interesting structure of thiacalix[4]arene, there are few reported examples of thiacalixarene-based coordination complexes used as electrocatalysts. Here, we report the electrocatalytic hydrogen evolution reaction (HER) by a thiacalix[4]arene-based copper(II) complex (1). The HER occurs at -1.03 V with a shift of 0.27 V compared to the second peak potential at -1.30 V. Increasing the number of acetic acid equivalents from 0 to 17.5 led to an increase in peak current, reaching a maximum value of 183 mu A for 15 equivalents of acetic acid.
JOURNAL OF THE CHEMICAL SOCIETY OF PAKISTAN
(2023)
Article
Chemistry, Multidisciplinary
Aleksandar Maric, Pavle Jovanov, Slobodan Gadzuric, Tatjana Trtic-Petrovic, Marijana Sakac, Aleksandar Tot, Marko Bertic, Milan Vranes
Summary: The influence of biodegradable cholinium ionic liquids on the formation of aqueous biphasic systems and the extraction of 5-hydroxymethylfurfural (HMF) from honey was investigated. The ability of ionic liquids to form aqueous biphasic systems was found to vary depending on the anions used. By comparing phase diagrams, it was determined that cholinium butyrate had the highest extraction efficiency for HMF from honey. Computer simulations provided insights into the mechanisms of HMF extraction using ionic liquids.
Article
Chemistry, Analytical
Sanja Mutic, Jasmina Anojcic, Milan Vranes, Jovana Panic, Snezana Papovic
Summary: The rapid and sensitive determination of organic UV filters BP-3 and AVO was achieved using an ionic liquid carbon paste electrode (IL-CPE), with [N-C4-3C1Py]Cl-CPE showing more favorable interactions. The IL-based voltammetric sensor demonstrated good selectivity and potential for quantifying the selected UV filters in various real samples.
