Article
Chemistry, Physical
Shuai Zhao, Zhao-Hui Zhou, Yang-Nan Shangguan, Lu Han, Li-Li Wang, Wei Fan, Qun Zhang, Lei Zhang, Gui-Yang Ma, Lu Zhang
Summary: This paper investigates the effects of extended surfactant concentration, polypropylene oxide (PO) number, and various counter ions (Na+, Ca2+, and Mg2+) on the oil-water interfacial tension (IFT) of extended surfactant solutions. The results show that as the PO number increases, the space occupied by surfactant molecules on the oil phase side increases, resulting in a tighter surfactant film. Bivalent cations can significantly reduce the IFT, with calcium ions achieving ultralow values at lower PO numbers and a wide range of alkane concentrations. The ability of magnesium ions to reduce the IFT is weaker than that of calcium ions. Additionally, surface-active substances in crude oil competitively adsorb on the interface, leading to an increase in IFT. The addition of calcium or magnesium ions forms a tight adsorption film of surfactant molecules, resulting in an ultralow IFT against crude oil.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Jinlei Zhang, Jing Liu, Min Wang, Zhonghua Zhang, Zhenfang Zhou, Xi Chen, Aobing Du, Shanmu Dong, Zhenjiang Li, Guicun Li, Guanglei Cui
Summary: This study investigates the decomposition mechanism of the Mg2+-anion ion pair on a model Mg metal electrode with trace H2O impurities. The results reveal that the introduction of H2O competitively solvating complexes induces the preferential decomposition of anions and reduces the cation transference number. The passivation of electrodeposits by MgO and Mg(OH)2 nanocrystals derived from parasitic reactions of anions and H2O molecules impairs the reversibility of Mg stripping/plating processes and the reproducibility of electrochemical experiments. The use of ternary electrolytes containing isobutylamine and trace di-N-butylmagnesium greatly improves the electrochemical performance.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Olivera Drecun, Alberto Striolo, Cecilia Bernardini
Summary: Aqueous salt solutions are studied to understand their impact on system dynamics, with a focus on molecular interfacial area and the strength of interaction with hydration-shell water molecules. Simulation predictions are consistent with experimental observations, suggesting potential applications in formulating aqueous systems for advanced catalyst manufacturing.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Construction & Building Technology
Yingxue Zou, Serji Amirkhanian, Shi Xu, Yuanyuan Li, Yafei Wang, Jianwei Zhang
Summary: This study evaluated the physicochemical properties of asphalt under different aqueous solutions, finding that aqueous solution can change the surface structure of asphalt and accelerate erosion. The impact of different aqueous solutions on asphalt erosion speed has a certain order.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Multidisciplinary Sciences
Liwen Jiang, Ke Zhang, Yixin Yao, Shuai Li, Jiao Li, Zhen Tian, Weili Zhang
Summary: This article introduces a new method for analyzing aqueous salt solutions using terahertz optoacoustics. The method manipulates terahertz optoacoustic signals through temperature control to reduce water background and provide more solute information. The results demonstrate the significant potential of this method for distinguishing different salt solutions and quantitatively analyzing salt concentrations.
Article
Materials Science, Multidisciplinary
Chuan Xu, Xinjian Yuan
Summary: High frequency ultrasonic vibration was used for arc welding of MB3 Mg alloy to improve welding defects and microstructure issues. By optimizing experimental parameters, Mg alloy joints with favorable mechanical properties were obtained. However, excessive ultrasonic power could degrade tensile strength.
Article
Engineering, Chemical
Xianxian Zhao, Kaihui Cui, Kun Huang
Summary: Understanding the effect of different salt cations on the extraction and separation of rare-earth ions is crucial for developing new methods. This study investigated the effect of Mg(II), Al(III), and Fe(III) cations on the extraction of low concentration Er(III) ions using the bubble-supported organic liquid membrane (BSOLM) extraction method. It was found that the extraction and separation of Er(III) ions can be significantly enhanced, which cannot be explained by traditional salt effect theory. The experiments revealed that BSOLM extraction enhances the interfacial salt effect, promoting the extraction of low concentration Er(III) ions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Lenka Musilova, Ales Mracek, Vera Kasparkova, Antonin Minarik, Artur J. M. Valente, Eduarda F. G. Azevedo, Luis M. P. Verissimo, M. Melia Rodrigo, Miguel A. Esteso, Ana C. F. Ribeiro
Summary: Tracer diffusion coefficients of sodium hyaluronate were measured at 25.0 degrees C with the influence of different salts at varying concentrations. The study showed a salting-in effect with an increase in ionic strength, while the opposite salting-out effect was observed with certain salts at higher concentrations, such as NH4SCN at 0.1 mol dm(-3). These findings, combined with viscosity measurements, provide insights into the transport behavior of NaHy in the presence of different salts.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Tingting Zhao, Nicola L. Bell, Greig Chisholm, Balamurugan Kandasamy, De-Liang Long, Leroy Cronin
Summary: In order to meet the increasing energy density demands of battery technology, the development of electrolytes with high electron storage capacity is crucial. Polyoxometalate (POM) clusters have the potential to act as electron storage electrolytes for flow batteries. However, little is known about the factors influencing the storage ability of these clusters, hindering their rational design. This study investigates large POM clusters and identifies key structural and speciation factors influencing their improved storage ability over previously reported clusters.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Multidisciplinary Sciences
Rui Shi, Anthony J. Cooper, Hajime Tanaka
Summary: The behaviour of ions solvated in water is highly ion-specific and can be explained by considering the interplay between ion-water and inter-water interactions as well as the bond-orientational order of the hydration shell. This study provides insight into the ion-specific effects observed in salt solutions and their impact on solution dynamics. The findings have fundamental implications for ionic processes in aqueous solutions, offering a physical principle for electrolyte design and application.
NATURE COMMUNICATIONS
(2023)
Article
Energy & Fuels
N. Miller, P. Coffey, H. Badenhorst, P. Martin
Summary: By varying the magnesium salt precursor used to precipitate Mg(OH)(2), the onset temperature of the Mg(OH)(2)/MgO thermochemical energy storage system can be reduced, improving its thermal capacity.
JOURNAL OF ENERGY STORAGE
(2021)
Review
Engineering, Chemical
Badri Vishal
Summary: Although aqueous foam is composed of simple fluids, it shows complex rheological behavior. Understanding this behavior is important for industrial applications in various fields. The stability of foam is related to the air-water interface, and the rheological properties of aqueous foam highly depend on its interfacial properties.
REVIEWS IN CHEMICAL ENGINEERING
(2023)
Article
Electrochemistry
Pengcheng Liu, Bin Guan, Ming Lu, Hui Wang, Zifeng Lin
Summary: This study investigates the influence of different aqueous solution treatments on the Li+ storage properties of Ti3C2Clx MXene. The results show that treatment with ammonium persulfate (APS) increases the storage capacity, while treatment with sodium hydroxide (NaOH) decreases the storage capacity.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Esther Feria, Jesus Algaba, Jose Manuel Miguez, Andres Mejia, Felipe J. Blas
Summary: In this research, the liquid-liquid phase equilibria and interfacial properties of methyl ester + water binary mixtures have been studied using molecular dynamics simulations and the direct coexistence technique. The simulation results are in good agreement with experimental data for phase equilibria, but overestimate the interfacial tensions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Multidisciplinary Sciences
Jean Comtet, Archith Rayabharam, Evgenii Glushkov, Miao Zhang, Ahmet Avsar, Kenji Watanabe, Takashi Taniguchi, Narayana R. Aluru, Aleksandra Radenovic
Summary: Our study investigated the dynamics of protons at the interface between an hBN crystal and binary mixtures of water and organic amphiphilic solvents, showing a significant influence of solvation on interfacial dynamics. Solvent content has a nontrivial effect on interfacial dynamics, leading at intermediate water fraction to an increased surface diffusivity and an increased affinity of the proton charges to the solid surface. Our measurements provide evidence of the notable role of solvation on interfacial proton charge transport.