1
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González-Barramuño B, Cea-Klapp E, Polishuk I, Quinteros-Lama H, Piñeiro MM, Garrido JM. Molecular Insights into the Wettability and Adsorption of Acid Gas-Water Mixture. J Phys Chem B 2024; 128:3764-3774. [PMID: 38576228 DOI: 10.1021/acs.jpcb.4c00592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Sequestration of acid gas in geological formations is a disposal method with potential economic and environmental benefits. The process is governed by variables such as gas-water interfacial tension, wetting transition, and gas adsorption into water, among other things. However, the influence of the pressure and temperature on these parameters is poorly understood. This study investigates these parameters using coarse-grained molecular dynamics (CG-MD) simulations and density gradient theory (DGT). Simulations were carried out at 313.15 K and a pressure range of 0-15 MPa. A comparison was made against H2S-water systems to clarify the effects of adsorption on interfacial tension due to vapor-liquid-liquid equilibrium. The predicted H2S-water interfacial tension and phase densities by CG-MD and DGT matched the experimental values well. The adsorption can be quantified via the Gibbs Adsorption function Γ12, which correlated well with the three-phase transition. On the one hand, pressure increments below the three-phase transition revealed a significant adsorption of H2S. On the other hand, above the three-phase transition, the Gibbs Adsorption capacity remained constant, which indicated a saturation of H2S at the water surface due to liquid-liquid equilibrium. Finally, H2S behaves markedly differently in wetting transition, rather than the involved for CO2 to different molecular layers beneath the surface of aqueous solutions. In this respect, H2S is represented by a first-order wetting transition while CO2 presents a critical wetting. Finally, it has also been found that the preferential adsorption of H2S over the H2O interface is greater if compared to that of CO2, due to its strong interaction with water. In fact, we have also demonstrated that CO2 under triphasic conditions strongly influences the wetting of the ternary system.
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Affiliation(s)
| | - Esteban Cea-Klapp
- Departamento de Ingeniería Química, Universidad de Concepción, 4070386 Concepción, Chile
| | - Ilya Polishuk
- Department of Chemical Engineering, Ariel University, 40700 Ariel, Israel
| | - Héctor Quinteros-Lama
- Departamento de Tecnologías Industriales, Universidad de Talca, Merced, 437 Curicó, Chile
| | - Manuel M Piñeiro
- Departamento de Física Aplicada, Universidade de Vigo, E36310 Vigo, España
| | - José Matías Garrido
- Departamento de Ingeniería Química, Universidad de Concepción, 4070386 Concepción, Chile
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2
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Pradhan I, Mahapatra A, Samal PP, Mishra P, Kumar P, Nayak A. Liquid-Liquid Interface-Assisted Self-Assembly of Ag-Doped ZnO Nanosheets for Atomic Switch Application. J Phys Chem Lett 2024; 15:165-172. [PMID: 38150295 DOI: 10.1021/acs.jpclett.3c02791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Developing facile and inexpensive methods for obtaining large-area two-dimensional semiconducting nanosheets is highly desirable for mass-scale device application. Here, we report a method for producing uniform and large-area films of a Ag-doped ZnO (AZO) nanosheet network via self-assembly at the hexane-water interface by controlling the solute/solvent ratio. The self-assembled film comprises of uniformly tiled nanosheets with size ∼1 μm and thicknesses∼60-100 nm. Using these films in a Pt/AZO/Ag structure, an atomic switch operation is realized. The switching mechanism is found to be governed by electrochemical metallization with nucleation as the rate-limiting step. Our results establish the protocol for large-scale device applications of AZO nanosheets for exploring advanced atomic switch-based neuromorphic systems.
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Affiliation(s)
- Itishree Pradhan
- Department of Physics, Indian Institute of Technology Patna, Patna 801106, India
| | - Anwesha Mahapatra
- Department of Physics, Indian Institute of Technology Patna, Patna 801106, India
| | | | - Puneet Mishra
- Department of Physics, Central University of South Bihar, Gaya 824236, India
| | - Prashant Kumar
- Global Innovative Centre for Advanced Nanomaterials, University of Newcastle, Callaghan Campus 2308, New South Wales, Australia
| | - Alpana Nayak
- Department of Physics, Indian Institute of Technology Patna, Patna 801106, India
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3
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Collanton RP, Ellison CJ, Dorfman KD. Thermodynamics and morphology of linear multiblock copolymers at homopolymer interfaces. J Chem Phys 2023; 159:194905. [PMID: 37987518 DOI: 10.1063/5.0170650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/30/2023] [Indexed: 11/22/2023] Open
Abstract
Block copolymers at homopolymer interfaces are poised to play a critical role in the compatibilization of mixed plastic waste, an area of growing importance as the rate of plastic accumulation rapidly increases. Using molecular dynamics simulations of Kremer-Grest polymer chains, we have investigated how the number of blocks and block degree of polymerization in a linear multiblock copolymer impacts the interface thermodynamics of strongly segregated homopolymer blends, which is key to effective compatibilization. The second virial coefficient reveals that interface thermodynamics are more sensitive to block degree of polymerization than to the number of blocks. Moreover, we identify a strong correlation between surface pressure (reduction of interfacial tension) and the spatial uniformity of block junctions on the interface, yielding a morphological framework for interpreting the role of compatibilizer architecture (number of blocks) and block degree of polymerization. These results imply that, especially at high interfacial loading, the choice of architecture of a linear multiblock copolymer compatibilizing surfactant does not greatly affect the modification of interfacial tension.
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Affiliation(s)
- Ryan P Collanton
- Department of Chemical Engineering and Materials Science, University of Minnesota-Twin Cities, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, USA
| | - Christopher J Ellison
- Department of Chemical Engineering and Materials Science, University of Minnesota-Twin Cities, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, USA
| | - Kevin D Dorfman
- Department of Chemical Engineering and Materials Science, University of Minnesota-Twin Cities, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, USA
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4
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Neupane P, Wilemski G. Molecular dynamics study of wetting of alkanes on water: from high temperature to the supercooled region and the influence of second inflection points of interfacial tensions. Phys Chem Chem Phys 2021; 23:14465-14476. [PMID: 34184020 DOI: 10.1039/d1cp01108a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To explore the wetting behavior of alkanes on bulk water interfaces, molecular dynamics (MD) simulations were carried out for united-atom PYS alkane models, and for SPC/E and TIP4P/2005 water models over a wide temperature range. The MD results at each temperature were used to find (1) the surface tension of the alkanes (octane, nonane) and water, and (2) the interfacial tensions of the alkane-water systems. These quantities were then used to calculate the spreading coefficient (S) and contact angle (θc) for each alkane on water. At higher temperatures, the contact angle of octane and nonane on water is found to behave in accord with conventional expectations, i.e., it decreases with increasing temperature for both water models as each system approaches the usual high-temperature transition to perfect wetting. At lower temperatures, we found an unusual temperature dependence of S and θc for each PYS alkane on SPC/E water. In contrast to conventional expectations, θc decreases with a decrease in the temperature. For octane-SPC/E water, this unusual behavior of θc occurs due to the presence of second inflection points (SIP) in the vapor-water and the octane-water interfacial tensions, whereas the SIP effect is much less important for the nonane-water system. The unusual temperature dependence of θc observed for nonane on SPC/E water is also found for nonane on TIP4P/2005 water. On the other hand, such unusual wetting behavior has not been observed in the PYS octane-TIP4P/2005 water system, except possibly for the two lowest temperatures studied.
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Affiliation(s)
- Pauf Neupane
- Department of Physics, Missouri University of Science and Technology, Rolla, MO 65409, USA.
| | - Gerald Wilemski
- Department of Physics, Missouri University of Science and Technology, Rolla, MO 65409, USA.
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5
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Yang YL, Tsao HK, Sheng YJ. Molecular structure incorporated deep learning approach for the accurate interfacial tension predictions. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Zhang L, Lu X, Liu X, Li Q, Cheng Y, Hou Q. Molecular dynamics simulation of CO 2-switchable surfactant regulated reversible emulsification/demulsification processes of a dodecane-saline system. Phys Chem Chem Phys 2020; 22:23574-23585. [PMID: 33057504 DOI: 10.1039/d0cp03904g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CO2-Switchable surfactants are of great potential in a wide range of industrial applications related to their ability to stabilize and destabilize emulsions upon command. Molecular dynamics simulations have been performed to reveal the fundamental mechanism of the reversible emulsification/demulsification processes of a dodecane-saline system by a CO2-switchable surfactant that switches between active (i.e., N'-dodecyl-N,N-dimethylacetamidinium (DMAAH+)) and inactive (i.e., N'-dodecyl-N,N-dimethylacetamidine (DMAA)) forms. The density profiles indicate that DMAAH+ could increase the oil-water interfacial thickness to a greater extent compared to DMAA. DMAAH+ could sharply reduce the interfacial tension of the dodecane-saline system, while DMAA only exhibits a limited decrease, which is in accordance with the experimental observation that DMAAH+/DMAA can reversibly emulsify/demulsify alkane-water systems. Our simulations showed that both the number and lifetime of hydrogen bonds (HBs) between DMAA and water are almost equal to those between DMAAH+ and water. In DMAA, the N atom connecting with the alkyl tail acted as a HB acceptor, while the N atom attached by a proton in DMAAH+ acted as a HB donor. Furthermore, the HBs between DMAAH+ and HCO3- at the interfaces are relatively limited. Hence, it is deduced that the HBs are insufficient to achieve the CO2-switchability of DMAA/DMAAH+. The Lennard Jones and coulombic potentials between DMAA/DMAAH+ and other species show that the coulombic potentials between DMAAH+ and water or anions (i.e., Cl- and HCO3-) sharply decrease with the increase of DMAAH+ and are much lower than those in models with DMAA. The enhanced coulombic interactions between DMAAH+ and anions lead to a remarkable reduction in interfacial tension and the emulsification of the alkane-saline system. Therefore, coulombic interactions are of crucial importance to the reversible emulsification/demulsification processes regulated by CO2-switchable surfactants, namely DMAAH+/DMAA.
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Affiliation(s)
- Lihu Zhang
- State Key Laboratory for Ore Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China.
| | - Xiancai Lu
- State Key Laboratory for Ore Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China. and Key Lab of Surficial Geochemistry of Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China
| | - Xiandong Liu
- State Key Laboratory for Ore Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China.
| | - Qin Li
- State Key Laboratory for Ore Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China.
| | - Yongxian Cheng
- State Key Laboratory for Ore Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China.
| | - Qingfeng Hou
- State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation (CNPC), Beijing 100083, P. R. China
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7
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Gao P, Yang X, Tartakovsky AM. Learning Coarse-Grained Potentials for Binary Fluids. J Chem Inf Model 2020; 60:3731-3745. [PMID: 32668158 DOI: 10.1021/acs.jcim.0c00337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
For a multiple-fluid system, CG models capable of accurately predicting the interfacial properties as a function of curvature are still lacking. In this work, we propose a new probabilistic machine learning (ML) model for learning CG potentials for binary fluids. The water-hexane mixture is selected as a typical immiscible binary liquid-liquid system. We develop a new CG force field (FF) using the Shinoda-DeVane-Klein (SDK) FF framework and compute parameters in this CG FF using the proposed probabilistic ML method. It is shown that a standard response-surface approach does not provide a unique set of parameters, as it results in a loss function with multiple shallow minima. To address this challenge, we develop a probabilistic ML approach where we compute the probability density function (PDF) of parameters that minimize the loss function. The PDF has a well-defined peak corresponding to a unique set of parameters in the CG FF that reproduces the desired properties of a liquid-liquid interface. We compare the performance of the new CG FF with several existing FFs for the water-hexane mixture, including two atomistic and three CG FFs with respect to modeling the interface structure and thermodynamic properties. It is demonstrated that the new FF significantly improves the CG model prediction of both the interfacial tension and structure for the water-hexane mixture.
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Affiliation(s)
- Peiyuan Gao
- Advanced Computing, Mathematics, and Data Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Xiu Yang
- Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Alexandre M Tartakovsky
- Advanced Computing, Mathematics, and Data Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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8
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Behavior of the SDS/1-butanol and SDS/2-butanol mixtures at the water/n-octane interface through molecular dynamics simulations. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2019.04.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Nieto-Draghi C, Rousseau B. Thermodynamically Consistent Force Field for Coarse-Grained Modeling of Aqueous Electrolyte Solution. J Phys Chem B 2019; 123:2424-2431. [DOI: 10.1021/acs.jpcb.8b11190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Carlos Nieto-Draghi
- IFP Energies nouvelles, 1-4 Avenue de Bois Préau, 92852 Rueil-Malmaison, France
| | - Bernard Rousseau
- Laboratoire de Chimie Physique, UMR 8000 CNRS, Université Paris-Sud, 91405 Orsay, France
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10
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Sokołowski S, Pizio O. Density functional theory for the microscopic structure of nanoparticles at the liquid-liquid interface. Phys Chem Chem Phys 2019; 21:3073-3082. [PMID: 30672936 DOI: 10.1039/c8cp07449f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We propose an extension of the density functional approach to study the structure and thermodynamic properties of a system comprising a certain amount of nanoparticles at the interface between two partially miscible liquids. Model calculations have been carried out for a binary symmetric mixture of Yukawa fluids and hard-sphere nanoparticles. Despite its simplicity, the model captures the principal features of this type of system. The results indicate that nanoparticles form layers and the number of layers depends on the amount of nanoparticles and on their diameters. For the systems studied the formation of the layers evidences strong localization of the nanoparticles at the interface.
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Affiliation(s)
- Stefan Sokołowski
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Sklodowska University, Lublin 20-031, Poland.
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11
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An Y, Bejagam KK, Deshmukh SA. Development of Transferable Nonbonded Interactions between Coarse-Grained Hydrocarbon and Water Models. J Phys Chem B 2019; 123:909-921. [DOI: 10.1021/acs.jpcb.8b07990] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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12
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Camerin F, Gnan N, Rovigatti L, Zaccarelli E. Modelling realistic microgels in an explicit solvent. Sci Rep 2018; 8:14426. [PMID: 30258102 PMCID: PMC6158278 DOI: 10.1038/s41598-018-32642-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 08/29/2018] [Indexed: 11/30/2022] Open
Abstract
Thermoresponsive microgels are polymeric colloidal networks that can change their size in response to a temperature variation. This peculiar feature is driven by the nature of the solvent-polymer interactions, which triggers the so-called volume phase transition from a swollen to a collapsed state above a characteristic temperature. Recently, an advanced modelling protocol to assemble realistic, disordered microgels has been shown to reproduce experimental swelling behavior and form factors. In the original framework, the solvent was taken into account in an implicit way, condensing solvent-polymer interactions in an effective attraction between monomers. To go one step further, in this work we perform simulations of realistic microgels in an explicit solvent. We identify a suitable model which fully captures the main features of the implicit model and further provides information on the solvent uptake by the interior of the microgel network and on its role in the collapse kinetics. These results pave the way for addressing problems where solvent effects are dominant, such as the case of microgels at liquid-liquid interfaces.
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Affiliation(s)
- F Camerin
- CNR-ISC, Uos Sapienza, Piazzale A. Moro, 2, 00185, Roma, Italy.
- Dipartimento di Scienze di Base e Applicate per l'Ingegneria, Sapienza Università di Roma, via A. Scarpa, 14, 00161, Roma, Italy.
| | - N Gnan
- CNR-ISC, Uos Sapienza, Piazzale A. Moro, 2, 00185, Roma, Italy
- Dipartimento di Fisica, Sapienza Università di Roma, Piazzale A. Moro, 2, 00185, Roma, Italy
| | - L Rovigatti
- CNR-ISC, Uos Sapienza, Piazzale A. Moro, 2, 00185, Roma, Italy
- Dipartimento di Fisica, Sapienza Università di Roma, Piazzale A. Moro, 2, 00185, Roma, Italy
| | - E Zaccarelli
- CNR-ISC, Uos Sapienza, Piazzale A. Moro, 2, 00185, Roma, Italy.
- Dipartimento di Fisica, Sapienza Università di Roma, Piazzale A. Moro, 2, 00185, Roma, Italy.
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13
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Ghoufi A, Malfreyt P. Calculation of the surface tension of water: 40 years of molecular simulations. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1513648] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Aziz Ghoufi
- Institut de Physique de Rennes, Université Rennes 1, Rennes, France
| | - Patrice Malfreyt
- Institut de Chimie de Clermont-Ferrand (ICCF), Université Clermont Auvergne, CNRS, SIGMA Clermont, Clermont-Ferrand, France
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14
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Steinmetz D, Creton B, Lachet V, Rousseau B, Nieto-Draghi C. Simulations of Interfacial Tension of Liquid-Liquid Ternary Mixtures Using Optimized Parametrization for Coarse-Grained Models. J Chem Theory Comput 2018; 14:4438-4454. [PMID: 29906108 DOI: 10.1021/acs.jctc.8b00357] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this work, liquid-liquid systems are studied by means of coarse-grained Monte Carlo simulations (CG-MC) and Dissipative Particle Dynamics (DPD). A methodology is proposed to reproduce liquid-liquid equilibrium (LLE) and to provide variation of interfacial tension (IFT), as a function of the solute concentration. A key step is the parametrization method based on the use of the Flory-Huggins parameter between DPD beads to calculate solute/solvent interactions. Parameters are determined using a set of experimental compositional data of LLE, following four different approaches. These approaches are evaluated, and the results obtained are compared to analyze advantages/disadvantages of each one. These methodologies have been compared through their application on six systems: water/benzene/1,4-dioxane,water/chloroform/acetone, water/benzene/acetic acid, water/benzene/2-propanol, water/hexane/acetone, and water/hexane/2-propanol. CG-MC simulations in the Gibbs (NVT) ensemble have been used to check the validity of parametrization approaches for LLE reproduction. Then, CG-MC simulations in the osmotic (μsoluteNsolventP zzT) ensemble were carried out considering the two liquid phases with an explicit interface. This step allows one to work at the same bulk concentrations as the experimental data by imposing the precise bulk phase compositions and predicting the interface composition. Finally, DPD simulations were used to predict IFT values for different solute concentrations. Our results on variation of IFT with solute concentration in bulk phases are in good agreement with experimental data, but some deviations can be observed for systems containing hexane molecules.
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Affiliation(s)
- David Steinmetz
- IFP Energies nouvelles , 1 et 4 avenue de Bois-Préau , 92852 Rueil-Malmaison , France
| | - Benoit Creton
- IFP Energies nouvelles , 1 et 4 avenue de Bois-Préau , 92852 Rueil-Malmaison , France
| | - Véronique Lachet
- IFP Energies nouvelles , 1 et 4 avenue de Bois-Préau , 92852 Rueil-Malmaison , France.,Laboratoire de Chimie Physique , Université Paris-Sud , UMR 8000 CNRS , 91405 Orsay , France
| | - Bernard Rousseau
- Laboratoire de Chimie Physique , Université Paris-Sud , UMR 8000 CNRS , 91405 Orsay , France
| | - Carlos Nieto-Draghi
- IFP Energies nouvelles , 1 et 4 avenue de Bois-Préau , 92852 Rueil-Malmaison , France
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15
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Couallier E, Riaublanc A, David Briand E, Rousseau B. Molecular simulation of the water-triolein-oleic acid mixture: Local structure and thermodynamic properties. J Chem Phys 2018; 148:184702. [DOI: 10.1063/1.5021753] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- E. Couallier
- GEPEA, CNRS UMR 6144, 37 Boulevard de l’Université, BP 406, 44602 Saint-Nazaire Cedex, France
| | - A. Riaublanc
- INRA BIA, Rue de la Géraudière, BP 71627, 44 316 Nantes Cedex 3, France
| | - E. David Briand
- INRA BIA, Rue de la Géraudière, BP 71627, 44 316 Nantes Cedex 3, France
| | - B. Rousseau
- LCP, CNRS UMR 8000, Université Paris Sud, 310 Rue Michel Magat, 91400 Orsay, France
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16
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Katiyar P, Singh JK. A coarse-grain molecular dynamics study of oil-water interfaces in the presence of silica nanoparticles and nonionic surfactants. J Chem Phys 2017; 146:204702. [PMID: 28571351 DOI: 10.1063/1.4984073] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this work, we have studied the effect of hydrophilic silica nanoparticles (NPs), in the presence of nonionic surfactants (Triethylene glycol monododecyl ether and Tween 20), on the oil-water (n-octane-water, n-dodecane-water and n-hexadecane-water) interfacial tensions (IFTs) at 300 K, using coarse-grained molecular dynamics simulations based on the MARTINI force field. Simulation results indicate that silica NPs solely do not affect the IFT. However, the silica NPs may or may not increase the IFT of oil-water containing nonionic surfactant, depending on the tendency of the surfactant to adsorb on the surface of NPs. The adsorption occurs due to the formation of hydrogen bonds, and adsorption increases with a decrease in pH, as seen in experimental studies. In this work, we found that the oil-water IFT increases with an increasing amount of adsorption of the surfactant on NPs. At a fixed amount of adsorption of the surfactant on NPs, the IFT behavior is indifferent to the change in concentration of NPs. However, the IFT decreases with an increase in surfactant concentration. We present a detailed analysis of the density profile and intrinsic width of the interface. The IFT behavior is found to correlate extremely well with the intrinsic width of the interface. The current study provides an explanation for the increase in IFT observed in a recent experiment [N. R. Biswal et al., J. Phys. Chem. B 120, 7265-7274 (2016)] for various types of NPs and nonionic surfactant systems.
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Affiliation(s)
- Parul Katiyar
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Jayant K Singh
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
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17
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Ndao M, Devémy J, Ghoufi A, Malfreyt P. Coarse-Graining the Liquid-Liquid Interfaces with the MARTINI Force Field: How Is the Interfacial Tension Reproduced? J Chem Theory Comput 2016; 11:3818-28. [PMID: 26574463 DOI: 10.1021/acs.jctc.5b00149] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report two-phase coarse-grained (CG) simulations of organic-water liquid-liquid interfaces with the MARTINI force field. We discuss the ability of the CG force field to predict quantitatively the interfacial tension of alkanes-water, benzene-water, chloroform-water, and alcohol-water systems. The performance of the prediction of the interfacial tension is evaluated through its dependence on temperature and alkane length. This study contributes to the challenging discussion about the robustness and the transferability of the MARTINI force field to interfacial properties. We have also used the distributions of the molecules along the direction normal to the interface to investigate the composition of the interfacial region and to compare the simulated densities of the coexisting phases with experiments.
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Affiliation(s)
- Makha Ndao
- Université Clermont Auvergne, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand , BP 10448, F-63000 Clermont-Ferrand, France
| | - Julien Devémy
- Université Clermont Auvergne, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand , BP 10448, F-63000 Clermont-Ferrand, France
| | - Aziz Ghoufi
- Institut de Physique de Rennes, Université Rennes 1 , 35042 Rennes, France
| | - Patrice Malfreyt
- Université Clermont Auvergne, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand , BP 10448, F-63000 Clermont-Ferrand, France
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18
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Solano Canchaya JG, Dequidt A, Goujon F, Malfreyt P. Development of DPD coarse-grained models: From bulk to interfacial properties. J Chem Phys 2016; 145:054107. [DOI: 10.1063/1.4960114] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Affiliation(s)
- José G. Solano Canchaya
- Institut de Chimie de Clermont-Ferrand, Université Blaise Pascal, Université Clermont Auvergne, BP 10448, F-63000 Clermont-Ferrand, France
- CNRS, UMR 6296, ICCF, F-63178 Aubiere, France
| | - Alain Dequidt
- Institut de Chimie de Clermont-Ferrand, Université Blaise Pascal, Université Clermont Auvergne, BP 10448, F-63000 Clermont-Ferrand, France
- CNRS, UMR 6296, ICCF, F-63178 Aubiere, France
| | - Florent Goujon
- Institut de Chimie de Clermont-Ferrand, Université Blaise Pascal, Université Clermont Auvergne, BP 10448, F-63000 Clermont-Ferrand, France
- CNRS, UMR 6296, ICCF, F-63178 Aubiere, France
| | - Patrice Malfreyt
- Institut de Chimie de Clermont-Ferrand, Université Blaise Pascal, Université Clermont Auvergne, BP 10448, F-63000 Clermont-Ferrand, France
- CNRS, UMR 6296, ICCF, F-63178 Aubiere, France
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19
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Lundberg L, Edholm O. Dispersion Corrections to the Surface Tension at Planar Surfaces. J Chem Theory Comput 2016; 12:4025-32. [DOI: 10.1021/acs.jctc.6b00182] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Linnea Lundberg
- Theoretical Biological Physics,
Department of Theoretical Physics, Royal Institute of Technology (KTH), AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - Olle Edholm
- Theoretical Biological Physics,
Department of Theoretical Physics, Royal Institute of Technology (KTH), AlbaNova University Center, SE-106 91 Stockholm, Sweden
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20
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Garrido JM, Piñeiro MM, Mejía A, Blas FJ. Understanding the interfacial behavior in isopycnic Lennard-Jones mixtures by computer simulations. Phys Chem Chem Phys 2016; 18:1114-24. [PMID: 26660062 DOI: 10.1039/c5cp06562c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The physical characterization of the singular interfacial behavior of heterogeneous fluid systems is a very important step in preliminary stages of the design process, and also in the subsequent procedures for the determination of the optimal operating conditions. Molar isopycnicity or molar density inversion is a special case of phase equilibrium behavior that directly affects the relative position of phases in heterogeneous mixtures, without being affected by gravitational fields. This work is dedicated to characterize the impact of molar density inversion on the interfacial properties of Lennard-Jones binary mixtures. The results and specific trends of the molar density inversion phenomena on the peculiar calculated composition profiles across the interface and interfacial tensions are explored by using canonical molecular dynamics simulations of the Lennard-Jones binary mixtures. Our results show that the density inversion causes drastic changes in the density profiles of the mixtures. In particular, symmetrical and equal-sized Lennard-Jones mixtures always exhibit desorption along the interfacial zone, i.e. the interfacial concentration profiles show a relative minimum at the interface of the total density profiles that increases when the dispersive energy parameter (ε(ij)) between unlike species decreases. However, as the asymmetry of the Lennard-Jones mixtures increases (σ(i) ≠ σ(j)), the concentration profiles display a relative maximum at the interface, which implies the adsorption of the total density profiles along the interfacial zone.
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Affiliation(s)
- José Matías Garrido
- Dpto. de Ingeniería Química, Univ. de Concepción, POB 160-C, Concepción, Chile.
| | - Manuel M Piñeiro
- Dpto. de Física Aplicada, Fac. de Ciencias, Univ. de Vigo, E36310, Spain
| | - Andrés Mejía
- Dpto. de Ingeniería Química, Univ. de Concepción, POB 160-C, Concepción, Chile.
| | - Felipe J Blas
- Laboratorio de Simulación Molecular y Química Computacional, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Física Aplicada, Universidad de Huelva, E21071 Huelva, Spain
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21
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Martínez-Ruiz FJ, Moreno-Ventas Bravo AI, Blas FJ. Liquid-liquid interfacial properties of a symmetrical Lennard-Jones binary mixture. J Chem Phys 2015; 143:104706. [DOI: 10.1063/1.4930276] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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22
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Dequidt A, Solano Canchaya JG. Bayesian parametrization of coarse-grain dissipative dynamics models. J Chem Phys 2015; 143:084122. [DOI: 10.1063/1.4929557] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Affiliation(s)
- Alain Dequidt
- Université Clermont Auvergne, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, Clermont-Ferrand F-63000, France
- CNRS, UMR 6296, ICCF, Aubiere F-63178, France
| | - Jose G. Solano Canchaya
- Université Clermont Auvergne, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, Clermont-Ferrand F-63000, France
- CNRS, UMR 6296, ICCF, Aubiere F-63178, France
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23
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Zavadlav J, Melo MN, Marrink SJ, Praprotnik M. Adaptive resolution simulation of polarizable supramolecular coarse-grained water models. J Chem Phys 2015; 142:244118. [DOI: 10.1063/1.4923008] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Julija Zavadlav
- Laboratory for Molecular Modeling, National Institute of Chemistry, Hajdrihova 19, SI-1001 Ljubljana, Slovenia
| | - Manuel N. Melo
- Groningen Biomolecular Sciences and Biotechnology Institute and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
| | - Siewert J. Marrink
- Groningen Biomolecular Sciences and Biotechnology Institute and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
| | - Matej Praprotnik
- Laboratory for Molecular Modeling, National Institute of Chemistry, Hajdrihova 19, SI-1001 Ljubljana, Slovenia
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24
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Razbani MA. Modeling Interfacial Tension of n-Alkane/Water-Salt System Using Artificial Neural Networks. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2014.991444] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Martínez-Ruiz F, Blas F. Determination of interfacial tension of binary mixtures from perturbative approaches. Mol Phys 2015. [DOI: 10.1080/00268976.2014.1001807] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Martínez-Ruiz FJ, Blas FJ, Mendiboure B, Moreno-Ventas Bravo AI. Effect of dispersive long-range corrections to the pressure tensor: The vapour-liquid interfacial properties of the Lennard-Jones system revisited. J Chem Phys 2014; 141:184701. [DOI: 10.1063/1.4900773] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- F. J. Martínez-Ruiz
- Departamento de Física Aplicada, Universidad de Huelva, 21071 Huelva, Spain
- Centro de Investigación de Física Teórica y Matemática, Universidad de Huelva, 21071 Huelva, Spain
| | - F. J. Blas
- Departamento de Física Aplicada, Universidad de Huelva, 21071 Huelva, Spain
- Centro de Investigación de Física Teórica y Matemática, Universidad de Huelva, 21071 Huelva, Spain
| | - B. Mendiboure
- Laboratoire des Fluides Complexes et leurs Réservoirs, UMR5150, Université de Pau et des Pays de l’Adour, B. P. 1155, Pau Cedex 64014, France
| | - A. I. Moreno-Ventas Bravo
- Centro de Investigación de Física Teórica y Matemática, Universidad de Huelva, 21071 Huelva, Spain
- Departamento de Geología, Facultad de Ciencias Experimentales, Universidad de Huelva, 21071 Huelva, Spain
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