Article
Materials Science, Multidisciplinary
Y. X. Mu, D. B. Sun, Y. S. Wang, Y. L. Wang, Y. F. Liang, B. Zhou, S. W. Yu
Summary: The isothermal oxidation of the Ti-45Al-8.5Nb alloy treated by NaF solution at 900 degrees C has shown improved oxidation resistance due to the formation of an Al2O3-dominated oxide scale. The O-Ti2AlNb phase, as a modulated microstructure between alpha(2)-Ti3Al and Al2O3, actively determines the structural integrity during oxidation at high temperatures.
Article
Thermodynamics
Pranowo, Dio Afinanda Makarim, Akira Suami, Agung Tri Wijayanta, Nobusuke Kobayashi, Yoshinori Itaya
Summary: This study investigates the Marangoni convection during steam absorption into an aqueous LiBr solution and proposes a radial basis function (RBF) meshless method for numerical simulation. The results show that surface tension affects the absorbing solution, and increasing the Marangoni number has a significant effect on LiBr solution. Additionally, introducing a solid object at the interface can improve the velocity of convection flow.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Mechanics
Zhenying Wang, George Karapetsas, Prashant Valluri, Khellil Sefiane, Adam Williams, Yasuyuki Takata
Summary: Studies on the evaporation of multicomponent droplets have revealed complex physical mechanisms such as density-driven flows, phase separation, transient Marangoni flow, and solutal effects. By adding hygroscopic salts, the adhesive properties and direction of water vapor mass flux of the droplet can be controlled. The dynamics of hygroscopic aqueous solution droplets are analyzed, showing competition between capillary, thermal Marangoni, and solutal Marangoni mechanisms during evaporation or vapor absorption.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Engineering, Chemical
Christian Flessner, Leonard Thraen, Felix Ziegler
Summary: A new correlation for transport properties of aqueous solutions is proposed based on published data, aiming to provide a smooth transition from pure water properties to very dilute solutions and improve fit quality compared to the original correlation. However, further refinement is needed to fully capture the trend at higher mass fractions and temperatures according to other experimental datasets.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Jiaqian Zhang, Qi Lei, Zhiguo Ren, Xiaohui Zhu, Ji Li, Zhao Li, Shilei Liu, Yiran Ding, Zheng Jiang, Jiong Li, Yaobo Huang, Xiaolong Li, Xingtai Zhou, Yong Wang, Daming Zhu, Mengqi Zeng, Lei Fu
Summary: In this study, a periodically stacked CuS-CTAB superlattice was demonstrated as a competitive conversion-type anode for AZIBs, showing significantly improved specific capacity, rate performance, and stability. The CuS layers react with Zn2+ to provide high capacity, while the CTAB layers stabilize the structure and enhance Zn2+ diffusion kinetics. The CuS-CTAB anode exhibited superior rate performance and respectable cyclability, making it a promising candidate for high-performance AZIBs.
Article
Thermodynamics
Gang Wang, Peiwen Dong, Yang Lu, Min Zeng, Qunli Zhang
Summary: Experimental results show that nanoparticles and dispersants have a significant impact on the surface tension of nano-Lithium Bromide solution. The surface tension of the solution is influenced by a combination of solution concentration, temperature, dispersant, and nanoparticles.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Polymer Science
Jinsung Kim, Hyeonggil Choi, Hyeun-Min Rye, Keun-Byoung Yoon, Dong-Eun Lee
Summary: The study showed that the addition of PA solution can enhance the compressive strength of red clay, with further improvement when adding 5% poly(AA-co-AM). Microstructural analysis indicated that PA solution facilitates effective bonding of silica particles in red clay and encourages aggregate formation. Overall, the study confirmed that the PA solution can improve the durability and strength of the binder, meeting performance requirements for rammed-earth construction.
Article
Chemistry, Physical
Parisa Naeiji, Tom K. Woo, Ryo Ohmura, Saman Alavi
Summary: This study investigated the interfacial behavior of tetrabutylammonium bromide (TBAB) aqueous solutions under different conditions. The results showed that TBAB solutions have lower interfacial tension and higher gas adsorption at the interface, which facilitate the formation of semiclathrate hydrates. CO2 exhibits preferential adsorption compared to CH4 due to stronger interactions in the solution. The increased adsorption of CH4 at the solution surface is attributed to the hydrophobic interactions between the TBAB cation and methane gas.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Zichao Yan, Wenli Xin, Zhiqiang Zhu
Summary: The aqueous Zn-ion system is seen as a promising power source for future electronics due to its high energy density, intrinsic safety, and environmental friendliness. The main challenge lies in stabilizing zinc anodes, with artificial interphase engineering being identified as one of the most effective ways to achieve this.
Article
Chemistry, Physical
Jianan Wang, Xing Zhang, Hua Li, Constance Wang, Haoran Li, Stacia Keller, Umesh K. Mishra, Brett D. Nener, Giacinta Parish, Rob Atkin
Summary: The net surface charge of AlGaN/GaN structures is influenced by the pH-dependent protonation and deprotonation of surface hydroxyl groups and electron-deficient surface electronic states. AFM force measurements of ionic surfactant adsorption revealed varying surface properties of AlGaN with pH. Experimental findings show that the AlGaN surface charge changes with pH, being negatively charged at pH 12, neutral at pH 5.5, and positively charged at pH values below 5.5, with somewhat hydrophobic properties at acidic pH.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Na Wang, Yong-Shuai Zhang, Dong-Dong Wei, Hui-Min Duan, Liu-Meng Mo, Hong-Yan Wang
Summary: Modulating the electrolyte can tailor the activity and selectivity for PEC water splitting. In this study, we used carbon quantum dots (CQDs) solutions with aliphatic amino acids as precursors to enhance H2O2 accumulation on a BiVO4 photoanode via PEC water oxidation. The results showed that CQDs solution can adjust the catalytic voltage location and achieve efficient charge separation. Moreover, CQDs could regulate H2O2 generation and retard its decomposition, leading to a high H2O2 production rate and Faraday efficiency.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Thermodynamics
Christian Flessner, Felix Ziegler
Summary: A correlation for the dynamic viscosity of aqueous lithium bromide solution is proposed based on empirical approach and physical limitations. The correlation successfully predicts the solution's viscosity within the measured data range and exhibits higher accuracy compared to previous equations.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Qiang Chen, Xuan Lou, Yifei Yuan, Kun You, Chenghang Li, Chenhao Jiang, Yuquan Zeng, Sheng Zhou, Jianli Zhang, Guangya Hou, Jun Lu, Yiping Tang
Summary: A study on the working mechanisms of a Zn/MnO2 battery with a Co2+-stabilized, tunnel-structured alpha-MnO2 cathode (CoxMnO2) is conducted using advanced transmission electron microscopy, electrochemical analysis, and theoretical calculations. The results show that Co2+ can be pre-intercalated into alpha-MnO2 and occupy the (2 x 2) tunnel structure, which enhances the structural stability of MnO2 and facilitates proton diffusion and Zn2+ adsorption. It is also found that the anode design affects the adsorption of by-product on the MnO2 surface.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Axel Gross
Summary: In interfacial electrochemistry, it is commonly believed that the stability of adsorbate phases containing only hydrogen atoms is independent of the pH of the electrolyte, while the stability of adsorbate phases without hydrogen is independent of the pH on the scale of the standard hydrogen electrode. This Perspective argues that such Nernstian behavior can only occur if the free energy of the adsorbate phase is not affected by the electrochemical control parameters, which is generally not true. However, certain structural and chemical factors may lead to Nernstian behavior. The analysis also provides guidance for the validity of grand-canonical simulations using the computational hydrogen electrode concept.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Biochemistry & Molecular Biology
Buhani, Istikomah, Suharso, Sumadi, Sutarto, Huda M. Alghamdi, Khalid Z. Elwakeel
Summary: The modification of Tetraselmis sp. algae material with surfactant CTAB resulted in an effective adsorbent for the removal of anionic dyes from wastewater. The adsorption process followed pseudo-second-order kinetics and Freundlich adsorption isotherms. The reuse of the adsorbent showed high adsorption capacity even after multiple cycles.
Review
Agriculture, Multidisciplinary
Anina Gilgen, Silvio Blaser, Jerome Schneuwly, Frank Liebisch, Lutz Merbold
Summary: This study compares the Swiss agri-environmental data network (SAEDN) with the whole of Switzerland, evaluating the suitability of the collected data. It finds that the farm network in SAEDN represents the dominant agroecosystems of Switzerland well, but there is room for improvement in representing certain crop specializations and small ruminant husbandry.
AGRICULTURAL SYSTEMS
(2023)
Article
Multidisciplinary Sciences
Jaianth Vijayakumar, Tatiana M. Savchenko, David M. Bracher, Gunnar Lumbeeck, Armand Beche, Jo Verbeeck, Stefan Vajda, Frithjof Nolting, C. A. F. Vaz, Armin Kleibert
Summary: This paper provides a detailed understanding of the oxidation process of cobalt nanoparticles and evaluates the development of models for metal oxidation and magnetic phenomena at the nanoscale. Understanding the chemical reactivity and magnetism of 3d transition metal nanoparticles is essential for applications in spintronics and catalysis.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Youjin Lee, Suhan Son, Chaebin Kim, Soonmin Kang, Junying Shen, Michel Kenzelmann, Bernard Delley, Tatiana Savchenko, Sergii Parchenko, Woongki Na, Ki-Young Choi, Wondong Kim, Hyeonsik Cheong, Peter M. Derlet, Armin Kleibert, Je-Geun Park
Summary: Van der Waals magnets are ideal for tailoring 2D magnetism, and this study investigates the microscopic origin of magnetic order in the antiferromagnetic system FePS3. The experiments reveal a giant out-of-plane magnetic anisotropy and unquenched magnetic orbital moments. Calculations suggest that the Ising magnetism in FePS3 is a manifestation of spin-orbit entanglement in the Fe 3d electron system.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Nicolas Faure, Jie Chen, Luca Artiglia, Markus Ammann, Thorsten Bartels-Rausch, Jun Li, Wanyu Liu, Sen Wang, Zamin A. Kanji, Jan B. C. Pettersson, Ivan Gladich, Erik S. Thomson, Xiangrui Kong
Summary: Gas-phase interactions with aerosol particle surfaces play a crucial role in the atmospheric physicochemical evolution of Earth and other planets. In this study, the interfacial properties of a Martian salt analogue were investigated using an advanced surface-sensitive technique and molecular dynamics simulations. The results revealed that the Martian salt analogue surface is highly sensitive to water vapor, showing unexpected ion-selective behavior as the relative humidity increases.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Biodiversity Conservation
Andreas Roesch, Christian Flury, Thomas Nemecek, Stefan Mann, Christian Ritzel, Anina Gilgen
Summary: This paper presents a set of scientifically sound environmental indicators to describe the farm environmental impact and achieve Swiss agri-environmental policy goals. The indicator system covers key areas like greenhouse gas emissions, biodiversity, and soil erosion. Three systems of varying complexity were developed and evaluated, highlighting advantages and disadvantages. Successful implementation requires broad acceptance, support, good communication, simple data acquisition, and transparency.
ECOLOGICAL INDICATORS
(2023)
Article
Spectroscopy
Thorsten Bartels-Rausch, Jerome Philippe Gabathuler, Huanyu Yang, Yanisha Manoharan, Luca Artiglia, Markus Ammann
Summary: With the development of ambient pressure X-ray excited electron spectroscopy, near-edge X-ray absorption fine structure spectroscopy has become a commonly used method to study the hydrogen-bonding environment in aqueous solutions, ice, and adsorbed water. However, the presence of gas-phase water in X-ray absorption experiments with aqueous samples affects the acquired spectra in two ways. In this study, a procedure is developed to separate the contributions from the gas-phase and condensed-phase, allowing for high water vapor pressure condensed-phase near-edge X-ray absorption fine structure spectra without gas-phase artifacts.
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
(2023)
Article
Chemistry, Physical
Katarina Vazdar, Carmelo Tempra, Agnieszka Olzynska, Denys Biriukov, Lukasz Cwiklik, Mario Vazdar
Summary: EDTA is commonly used in lipid experiments to remove redundant ions, such as Ca2+, from the sample solution. This study demonstrates that EDTA anions can bind to phosphatidylcholine (PC) monolayers through interaction with choline groups, causing concentration-dependent changes in surface pressure. This discovery highlights the potential interfering interactions of EDTA with lipids and other biomolecules, which must be cautiously considered when interpreting lipid experiments.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Multidisciplinary
Dongmei Zhang, Jie Wang, Huan Chen, Chu Gong, Dong Xing, Ziao Liu, Ivan Gladich, Joseph S. Francisco, Xinxing Zhang
Summary: This study reveals that atmospheric fine particulate matter (PM) can generate a significant amount of hydroxyl radicals (OH) at the air-water interface. The researchers observed the oxidation of amphiphilic lipids and isoprene by water-soluble PM2.5 under ultraviolet A irradiation, with an estimated OH generation rate of 1.5 x 1016 molecule center dot s-1 center dot m-2. Atomistic molecular dynamics simulations support the unexpected affinity of isoprene for the air-water interface. This work suggests a potential new heterogeneous OH generation channel in the atmosphere.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
Angela C. Hong, Thomas Ulrich, Erik S. Thomson, Jurg Trachsel, Fabienne Riche, Jennifer G. Murphy, D. James Donaldson, Martin Schneebeli, Markus Ammann, Thorsten Bartels-Rausch
Summary: This work demonstrates that hydrogen peroxide can easily enter grain boundaries in ice and snow directly from the atmosphere. The accelerated reaction rates in these reservoirs have significant implications for air quality and snow composition. Laboratory experiments have revealed an unexpected oxidation acceleration by hydrogen peroxide in grain boundaries. However, it remains unclear how and to what extent hydrogen peroxide enters this reservoir.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xiangrui Kong, Ivan Gladich, Nicolas Faure, Erik S. Thomson, Jie Chen, Luca Artiglia, Markus Ammann, Thorsten Bartels-Rausch, Zamin A. Kanji, Jan B. C. Pettersson
Summary: This study explores the reactivity of gas-particle interfaces using advanced experimental and theoretical methods. It reveals that NaCl surfaces rapidly convert to Na2SO4 when exposed to SO2, while NH4Cl surfaces have limited uptake and no significant changes. Depth profiles indicate transformed layers and elemental ratios. The chlorine species detected originates from Cl- expelled from the NaCl crystal structure, as confirmed by atomistic density functional theory calculations. Molecular dynamics simulations show the chemically active NaCl surface driven by interfacial electric field and sub-monolayer water coverage. These findings highlight the chemical activity of salt surfaces and the unexpected chemistry arising from their interaction with interfacial water, even under very dry conditions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Nicolas Faure, Jie Chen, Luca Artiglia, Markus Ammann, Thorsten Bartels-Rausch, Jun Li, Wanyu Liu, Sen Wang, Zamin A. Kanji, Jan B. C. Pettersson, Ivan Gladich, Erik S. Thomson, Xiangrui Kong
Summary: Gas-phase interactions with aerosols play a crucial role in the physicochemical evolution of atmospheres, including that of Mars. However, our understanding of interfacial properties in natural systems with complex structures and compositions is limited. In this study, the researchers used ambient pressure X-ray photoelectron spectroscopy and molecular dynamics simulations to investigate a Martian salt analogue sampled on Earth. They found that the Martian salt analogue surface is extremely sensitive to water vapor, and the surface behavior changes as the relative humidity increases.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Chemistry, Physical
Carmelo Tempra, Zlatko Brkljaca, Mario Vazdar
Summary: In this study, the adsorption ability of arginine (Arg) and lysine (Lys) peptides in neutral phosphatidylcholine (PC) and phosphatidylethanolamine (PE) lipid bilayers was compared using molecular dynamics simulations and free energy calculations. The results showed that the stronger electrostatic and hydrophobic interactions during the adsorption process make arginine peptides more easily adsorbed onto neutral bilayers than lysine peptides.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
