Article
Chemistry, Physical
Ryuichi Kato, Masami Naya, Naoki Kasahata, Ryosuke Senga, Chikara Sato, Masanori Koshino, Kazu Suenaga, Masataka Hasegawa
Summary: High-quality graphene demonstrates efficient heat dissipation by direct contact with ice, significantly suppressing sublimation behavior, especially for thinner ice. The lifespan of ice on graphene against electron beam irradiation extends by approximately 40% compared to ice without graphene, providing a new avenue for effective thermal management in cryo-TEM analysis.
Article
Chemistry, Multidisciplinary
Xiuhua Li, Fang He, Frank Behrendt, Alba Dieguez-Alonso, Haiquan Sun, Hailiang Wang
Summary: This study experimentally confirmed that the vapor pressure of KCl increases when its molar fraction in KCl + K2SO4 mixtures ranges from 0.05 to 0.20, and the evaporation of KCl is inhibited by K2SO4 when its molar fraction exceeds 0.27.
Article
Chemistry, Physical
Liangyan Hao, Soumya Sridar, Wei Xiong
Summary: Thermodynamic modeling and optimization were conducted to investigate the thermodynamic behavior evolution of KCl-LiClNaCl and KCl-LiCl-NdCl3 systems, as well as their constituent binary systems. The study provides insights into the thermodynamic properties of the electrolyte and the variation of solubility limits of different impurities during the electrorefining process.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Jia Liu, Shi-Hua Sang, Qi Ge, Yang-Xiao Fu, Rui-Zhi Cui
Summary: In this study, the average activity coefficients and interaction parameters of KCl in mixed solutions were investigated by measuring cell potentials. By fitting the Nernst equation and Pitzer model, the activity coefficients, osmotic coefficients, and solubilities of KCl in the mixed solutions were predicted and showed good agreement with experimental results.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
L. Rycerz, J. Kapala, M. Gaune-Escard
Summary: The molar enthalpies of mixing in liquid potassium chloride-uranium(III) chloride mixtures were measured at 1113 K, showing negative enthalpies with a minimum value of about -17.5 kJ/mol. The existence of complexes in the liquid mixtures was discussed based on the obtained results, re-examining the KCl-UCl3 phase diagram with the inclusion of K3UCl6 compound.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Fei Long, Yu Luo, Nima N. Badr, Oksana Shiman, Matthew Topping, Suraj Y. Persaud, Zhongwen Yao, Laurent K. Beland, Mark R. Daymond
Summary: The crystal structure of the hydride induced by water quenching in Zr-2.5Nb pressure tube was identified using synchrotron x-ray diffraction and TEM nano-beam electron diffraction, showing a transition from gamma' phase to gamma and delta phases during room temperature aging, confirming its metastable nature. The amount of gamma' phase increased with quenching temperature, while the delta phase changed inversely. Additionally, in-situ heating experiments showed that the gamma' phase was present up to 278 degrees C, with transformation into delta hydride upon heating.
Article
Chemistry, Physical
Xavier A. Ojeda, Facundo J. Castro, Santiago A. Pighin, Horacio E. Troiani, M. Sergio Moreno, Guillermina Urretavizcaya
Summary: The study identified the optimal Nb(V) ethoxide content of 0.25 mol% for efficiently catalyzing the H-2 sorption kinetics in the Mg/MgH2 system. The material showed remarkable kinetic behavior with excellent reversibility, absorbing and desorbing 5.3 wt% of hydrogen within 3 minutes. The improvement in hydrogen desorption and absorption properties was attributed to the enhancement of kinetic processes on the material's surface due to the excellent spreading of the liquid additive at nanometric level.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Yung-Chang Lin, Amane Motoyama, Silvan Kretschmer, Sadegh Ghaderzadeh, Mahdi Ghorbani-Asl, Yuji Araki, Arkady Krasheninnikov, Hiroki Ago, Kazu Suenaga
Summary: 2D metal chloride structures are grown between bilayer graphene sheets through intercalation of metal and chlorine atoms, leading to the discovery of novel spatially confined phases of AlCl3 and CuCl2 distinct from their typical bulk forms. In situ scanning transmission electron microscopy (STEM) observations directly show transformations between these new phases, while density functional theory calculations provide insights into their electronic properties. Co-intercalation of different metal chlorides results in the creation of completely new hybrid systems, including in-plane quasi-1D AlCl3/CuCl2 heterostructures, hinting at the unique possibilities for fabricating new types of 2D materials with diverse electronic properties confined between graphene sheets.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Stefan Loeffler, Michael Stoeger-Pollach, Andreas Steiger-Thirsfeld, Walid Hetaba, Peter Schattschneider
Summary: EMCD is a versatile method for measuring magnetism in TEM, with a strong dependence on acceleration voltage. A detailed investigation on this dependence using theory, simulations, and experimental data enables scientists to optimize experimental parameters.
Article
Chemistry, Multidisciplinary
Qiunan Liu, Yung-Chang Lin, Silvan Kretschmer, Mahdi Ghorbani-Asl, Pablo Solis-Fernandez, Ming-Deng Siao, Po-Wen Chiu, Hiroki Ago, Arkady V. Krasheninnikov, Kazu Suenaga
Summary: This study investigates the atomic structural transformation of molybdenum(V) chloride after intercalation into bilayer graphene. The results reveal giant lattice distortions and frequent structural transitions in the intercalated material, which have never been observed in metal chloride systems. The findings deepen our understanding of matter behavior in confined spaces and provide insights for more efficient tuning of material properties through intercalation.
Article
Geochemistry & Geophysics
Tulay Turk, Murat Olgac Kangal
Summary: This study used chlorination technique to extract potassium chloride from potassium feldspar ore in Turkey, and determined the most suitable and economical additive through testing different salts. The results showed that a mixture of CaCl2 and NaCl achieved higher efficiency in potassium dissolution.
Article
Physics, Condensed Matter
Annett Thogersen, Ingvild J. T. Jensen, Branson D. Belle, Marit Stange, Vilde Mari Reinertsen, Torunn Kjeldstad, Oystein Prytz, Edouard Monakhov, Demie Kepaptsoglou
Summary: Plasmonic properties of aluminium nanowires in the UV and far UV region were investigated in this study. The study demonstrated that aluminium nanowires can serve as an excellent alternative to Ag or Au for enhancing optical activity. The size and spacing of the nanowires, as well as the embedding material, were found to significantly impact the type of surface plasmon energies that can be generated.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
Kittikhun Ruangchai, Ruangdaj Tongsri, John T. H. Pearce, Torranin Chairuangsri, Sankum Nusen, Hiroki Kurata, Mitsutaka Haruta, Tsutomu Kiyomura, Atsushi Yamaguchi, Amporn Wiengmoon
Summary: In this study, the phase composition and microstructure of high chromium cast irons with the addition of Mo or W were characterized. Different types of carbides, including M23C6, M6C, and M7C3, were observed in the as-cast condition and after annealing. The annealing treatment led to the formation of eutectic carbides, coarse and fine secondary carbides, and lamellar pearlite.
MATERIALS CHARACTERIZATION
(2023)
Article
Green & Sustainable Science & Technology
Yifan Du, Weigang Lin, Peter Glarborg
Summary: The study explored the influence of potassium chloride (KCl) on fine particle emissions from wood burning. It was found that the presence of KCl led to a decrease in ultrafine particle emissions and an increase in emissions of larger particles. Additionally, the emission factors of organic compounds and soot particles increased with higher KCl content.
Article
Nanoscience & Nanotechnology
C. -J. Liu, H. -Y. Lo, A. -Y. Hou, J. -Y. Chen, C. -H. Wang, C. -W. Huang, W. -W. Wu
Summary: One-dimensional metal oxide nanostructured materials have attracted attention for their properties and functionalities. This study investigated the resistive switching mechanism in a single Ta2O5 nanotube, revealing its dynamic behavior in memristive devices. The relationship between crystallinity and electrical properties was also explored.
MATERIALS TODAY NANO
(2022)