Article
Chemistry, Physical
Qiongyao He, Xiaojuan Jiang, Pengzhan Cai, Ling Zhang, Tao Sun, Xiaokui Yang, Kun Zhou, Lunwu Zhang
Summary: Interstitial free steels with different grain sizes and textures were prepared through cold-rolling and annealing processes. It was found that the increase in the volume fraction of recrystallized grains and the decrease in stored energy resulted in the enhancement of corrosion resistance.
Article
Electrochemistry
Stepan P. Arkhipov, Yury P. Zaikov, Pavel A. Arkhipov, Albert R. Mullabaev
Summary: The interaction between CrF2 and a molten LiF-BeF2 mixture was studied using electrochemical methods. The results showed that chromium exists exclusively in one valence form under the experimental conditions, and its reduction occurs through a two-electron electrode reaction. The equilibrium concentrations of chromium were measured at different temperatures and concentrations, and the oxidation degree of dissolved chromium was calculated. Thermodynamic analysis revealed slight deviations from Raoult's laws in the salt system due to the formation of dilute solutions.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Gobi Saravanan Kaliaraj, Sudhakar Thukkaram, Karthik Alagarsamy, A. M. Kamalan Kirubaharan, Likhitha Kiliyelathu Paul, Linta Abraham, Vinita Vishwakarma, Suresh Sagadevan
Summary: The study found that the calcia stabilized zirconia and silver-CaSZ nanocomposite coatings have potential benefits in improving the surface properties of bioimplants, effectively reducing inflammation, inhibiting bacterial growth, and enhancing biocompatibility.
SURFACES AND INTERFACES
(2021)
Article
Multidisciplinary Sciences
Hugo Hartl, Joseph Davies, Geoffrey Will, Kostya Ostrikov, Jennifer MacLeod
Summary: This study presents a new method for directly fabricating a superhydrophobic surface coating on mild steel. Dielectric barrier discharge (DBD) plasma was used to convert a liquid small-molecule precursor to a solid film through plasma-assisted on-surface polymerization. The properties of the coating were analyzed using various techniques, including microscopy, spectroscopy, and contact angle measurement. The results showed that the wettability of the films could be controlled by adjusting the plasma parameters and incorporating graphene nanoplatelets in the precursor. High-dose plasma exposures of the nanoplatelet-containing precursor resulted in the formation of superhydrophobic films with water contact angles above 150 degrees. However, the superhydrophobic coating provided limited corrosion protection according to potentiodynamic polarisation tests.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Kelei Zhuo
Summary: In this study, the relationship between Langmuir adsorption coefficients and Gibbs free energy change is derived in detail, and the applicable conditions for correct application and avoiding misuse are analyzed and discussed.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Construction & Building Technology
Yu Zhang, Kaifeng Zheng, Jin Zhu, Ming Lei, Xiaoyang Feng
Summary: Weathering steel and high-performance steel are commonly used in bridge engineering, but corrosion effects can reduce their fatigue strength, posing a threat to the safety and reliability of bridges. Experimental results show that corrosion causes a decrease in the fatigue strength of Q345CNH and HPS 70 W, with fatigue cracks primarily originating from pitting flaws.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Agriculture, Multidisciplinary
Yu Yang, Stephanie Frank, Xibu Wei, Xingjie Wang, Yunkui Li, Martin Steinhaus, Yongsheng Tao
Summary: To investigate the molecular rearrangement of terpenes in aging wine, the changes in linalool, alpha-terpineol, nerol, and geraniol were studied in model wine stored in the dark at low temperature for 90 days. The terpenes were qualitatively and relatively quantified using headspace-gas chromatograph-mass spectrometer/olfactometry. Quantum mechanical calculation was used to analyze the Gibbs free energy. The results showed that nerol was converted into D-limonene, terpinolene, linalool, and alpha-terpineol, while geraniol was converted into beta-ocimene, terpinolene, and linalool. Linalool was converted into terpinolene. The conversion rates differed for different terpenes, with nerol to terpinolene having the highest rate at 5.94%. alpha-Terpineol did not spontaneously convert into other terpenes due to its lowest Gibbs free energy, indicating that cyclization and isomerization occurred spontaneously through an exothermic reaction. However, the dehydroxylation of linalool, nerol, and geraniol required an energy source.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Energy & Fuels
Qi Gao, Yuanwei Lu, Yanchun Yang, Yuting Wu, Cancan Zhang, Zhansheng Fan
Summary: This study investigated the corrosion behavior of molten salt with different chlorine ion (Cl) content on metal materials. The results showed that the quaternary mixed molten salt with a low Clcontent of 0.03 wt% had the lowest corrosion rate on stainless steel, and the addition of calcium ions (Ca2+) to solar salt with the same Clcontent of 0.03 wt% reduced the corrosion rate of stainless steel. Morphological analysis of the corrosion products revealed the formation of calcium rich oxide layers containing CaFeO4, which inhibited further corrosion of stainless steel in molten salt.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Multidisciplinary
M. R. Hosseini, M. Ahangari, M. H. Johar, S. R. Allahkaram
Summary: Biocompatible nanostructured coating plays a crucial role in improving the osseointegration ability of metallic implants. This study focused on optimizing the SiC concentration in Hydroxyapatite (HA) coating on AISI 316L stainless steel alloy. Results showed that SiC effectively hindered the formation and growth of micro cracks in the HA coating, leading to enhanced corrosion resistance and elastic modulus of the coatings.
Article
Chemistry, Physical
Charu Kandpal, J. D. Pandey, Ranjan Dey, Arvind Kumar Singh, Vinod Kumar Singh
Summary: This study conducted a comparative evaluation of important transport properties for ether-alkane mixtures, including viscosity, thermal conductivity, diffusion coefficient, and Gibbs free energy. Various methods were used to calculate these properties, aiming to understand the nature of intermolecular interactions in the mixture.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Green & Sustainable Science & Technology
A. Sangeetha, S. Shanmugan, Shiva Gorjian
Summary: This study investigates the potential of enhancing the productivity of a solar still by coating its sides with matte black paint mixed with activated carbon nanoparticles. The results show that this new design can increase the water temperature of the solar still, enhance its performance, and produce distilled water suitable for drinking.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Hamidreza Soltani Panah
Summary: This study simulated the supercritical water gasification process of ethanol and glycerol by considering the effect of Ru/Al2O3 catalyst concentration in thermodynamic modeling. The results showed that the concentration of catalyst has a substantial impact on the modeling, affecting the H2 and CH4 curves differently.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
M. Z. Nizami, B. D. L. Campeon, Y. Nishina
Summary: In this study, a composite of graphene oxide (GO) and hydroxyapatite (HA) was coated on medical grade stainless steel (MS 316L) substrate to improve its mechanical peeling resistance, corrosion resistance, and bioactivity. The coating showed strong adhesion, uniform coverage, and optimum surface roughness, leading to significant enhancement in corrosion potential and bioactivity. The combination of improved surface properties and bioactivity suggests that the GO-HA coating can overcome limitations of bare MS 316L surface in clinical settings.
MATERIALS TODAY SUSTAINABILITY
(2022)
Article
Chemistry, Physical
Xuhang Shi, Yimeng Xun, Yan Dong, Fuqiang Wang, Xinping Zhang, Ziming Cheng
Summary: This study proposes the idea of regulating the radiation field to match the solar thermochemical energy conversion on-demand, and introduces a biomimetic hierarchical porous structure as a solar thermochemical reactor to improve the conversion efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Physics, Condensed Matter
M. Habibinejad, R. Khordad, A. Ghanbari
Summary: In this paper, the thermodynamic properties of boron nitride (BN) were obtained using a q-deformed exponential-type potential within the framework of statistical mechanics. The predicted results for specific heat at constant pressure, enthalpy, and Gibbs free energy were found to have average absolute deviations of 3.9716%, 2.3567%, and 8.5868% from experimental data, respectively.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Chemistry, Multidisciplinary
Seungyeol Lee, Huifang Xu
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Seungyeol Lee, Huifang Xu
ACS EARTH AND SPACE CHEMISTRY
(2019)
Article
Geochemistry & Geophysics
Seungyeol Lee, Huifang Xu, Hongwu Xu, Ryan Jacobs, Dane Morgan
AMERICAN MINERALOGIST
(2019)
Article
Geochemistry & Geophysics
Huifang Xu, Shiyun Jin, Seungyeol Lee, Franklin W. C. Hobbs
Article
Multidisciplinary Sciences
Stephanie A. Napieralski, Heather L. Buss, Susan L. Brantley, Seungyeol Lee, Huifang Xu, Eric E. Roden
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2019)
Review
Geochemistry & Geophysics
Seungyeol Lee, Huifang Xu
Article
Chemistry, Multidisciplinary
Seungyeol Lee, Jizhe Cai, Shiyun Jin, Dongzhou Zhang, Ramathasan Thevamaran, Huifang Xu
ACS EARTH AND SPACE CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Seungyeol Lee, Huifang Xu, Jenelle Wempner, Hongwu Xu, Jianguo Wen
Summary: The discovery of high-density gold nanoparticles on the surfaces of opal nanospheres in kerogen-bearing shales from the Marcellus Formation suggests a new formation type of colloidal gold nanoparticles. The association of gold nanorods with mesoporous opal nanospheres indicates a potential for co-production of gas/oil and gold. High-resolution transmission electron microscopy (TEM) observations provide insight into the formation of Au deposits involving invisible gold, secondary supergene enrichments, or high-grade gold accumulations.
ACS EARTH AND SPACE CHEMISTRY
(2021)
Article
Geochemistry & Geophysics
Seungyeol Lee, Huifang Xu, Hongwu Xu, Joerg Neuefeind
Summary: The crystal structure of natural moganite from the Mogan formation on Gran Canaria was re-investigated using high-resolution synchrotron X-ray diffraction and X-ray/neutron pair distribution function analyses. This study reports the anisotropic atomic displacement parameters (ADPs) of moganite for the first time and shows that moganite nanomineral is stable with respect to quartz in hypersaline water. The combined methods provide high-quality structural parameters of moganite, including its ADPs and extra OH position at the surface, making them a useful alternative for crystals not suited for single-crystal XRD measurements.
Article
Geochemistry & Geophysics
Bingjie Shi, Christina M. Smeaton, Eric E. Roden, Seungyeol Lee, Kai Liu, Huifang Xu, Brian Kendall, Clark M. Johnson, Chris T. Parsons, Philippe Van Cappellen
Summary: This study investigated the evolution of bioreducible Fe(III) in nontronite NAu-1 over consecutive redox cycles, finding a gradual decrease in bioreducible Fe(III) due to preferential reductive dissolution of Fe(III) from the finest clay particles. The results suggest that around 4% of total clay-bound Fe remains permanently redox-active, with the fraction of renewable Fe for Fe-reducing bacteria dependent on the evolving size distribution of clay particles in redox dynamic environments.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geochemistry & Geophysics
Shiyun Jin, Huifang Xu, Seungyeol Lee
Summary: This study revisited the enigmatic Boggild intergrowths in iridescent labradorite crystals, revealing significant differences in lamellar compositions between different samples, depending on the thermal history of the host rock. The results do not support a regular symmetrical solvus model but suggest an inclined two-phase region that closes at low temperature.
Article
Geochemistry & Geophysics
Seungyeol Lee, Xiaofeng Guo
Summary: Xuite, a new member of the garnet supergroup discovered in basaltic scoria from Idaho, U.S.A., coexists with other minerals and exhibits unique crystal size, space group, and structural characteristics. Through various analytical methods, its transformation behavior at high temperatures has been revealed.
AMERICAN MINERALOGIST
(2022)
Article
Geochemistry & Geophysics
Seungyeol Lee, Huifang Xu, Hongwu Xu
Summary: The structure of opal-A needs to be redefined due to the discovery of new features peaks. This study also identifies additional coesite-like nanodomains and demonstrates the power of combining synchrotron XRD/PDF with TEM in determining the structures of poorly crystallized minerals.
AMERICAN MINERALOGIST
(2022)
Article
Geosciences, Multidisciplinary
Seungyeol Lee, Minji Park, Hoon Young Jeong
Summary: This study investigated the removal of dissolved As(III) by Si and Al oxides under anoxic conditions. It was found that natural sand had higher sorption capacity than chemically washed sand, and activated alumina could completely immobilize As(III).
JOURNAL OF THE KOREAN EARTH SCIENCE SOCIETY
(2022)
Article
Geochemistry & Geophysics
Huifang Xu, Shiyun Jin, Seungyeol Lee, Philip E. Brown
Summary: The crystal structure of a birefringent garnet from Stanley Butte, Arizona with orthorhombic symmetry and high birefringence is analyzed. The strong Fe-Al ordering in the octahedral sites contributes to its unique properties. The previously reported triclinic garnet structures are likely produced by pseudo-merohedral twinning of less-ordered orthorhombic structure.
AMERICAN MINERALOGIST
(2023)
Article
Geochemistry & Geophysics
Zhen-Min Ge, Xiao-Long Huang, Wei Xie, Tobias W. Hofig, Fan Yang, Yang Yu, S. Khogenkumar Singh
Summary: The mantle source composition of the nascent oceanic crust in the central part of the Gulf of California has been investigated using basaltic glass samples. These samples show trace element patterns similar to enriched mid-ocean ridge basalts, suggesting that the nascent oceanic crust in the Guaymas Basin might be generated through partial melting of a depleted mantle source metasomatized by subducted slab materials.
Article
Geochemistry & Geophysics
Jean-Michel Brazier, Katja E. Goetschl, Martin Dietzel, Vasileios Mavromatis
Summary: This study estimated the distribution coefficient of Zn2+ between calcite/aragonite and reactive fluids and found that the growth rate strongly influences D-Zn(2+) in both minerals. Additionally, a linear correlation was found between D-Zn(2+) and the saturation degree of the reactive fluid.
Article
Geochemistry & Geophysics
Ming Lei, Michele Lustrino, Jifeng Xu, Zhiqiang Kang, Zhengfu Guo, Jianlin Chen
Summary: This study presents a comprehensive geochronological, mineralogical, and geochemical analysis of olivine leucitites in the Maiga area of southern Tibet, suggesting that these rocks originate from a carbonated peridotite mantle source and highlighting the possibility of carbonates being recycled deep into the mantle during continental subduction.
Article
Geochemistry & Geophysics
Yuntao Ye, Xiaomei Wang, Huajian Wang, Haifeng Fan, Zhigang Chen, Qingjun Guo, Ziteng Wang, Chaodong Wu, Donald E. Canfield, Shuichang Zhang
Summary: Phosphorus is an essential element for life and its cycle in the ocean is closely connected with the carbon and oxygen cycles. The study of phosphate oxygen isotopes can provide insights into various reactions related to phosphorus. By analyzing carbonate fluorapatite samples from the Mesoproterozoic Era in North China, it was found that the oxygen isotope values were lower compared to modern samples, indicating a warmer climate during that time period and a potential reason for the scarcity of phosphorite.
Article
Geochemistry & Geophysics
Vincent Busigny, Oanez Lebeau, Didier Jezeduel, Carine Chaduteau, Sean Crowe, Magali Ader
Summary: This study conducted high-precision Mo isotope research on hydrothermal metal sulfides from a porphyry copper deposit in Southwest China and found that different stages of mineralization have distinct Mo isotope compositions, providing valuable insights into the behavior of Mo isotopes in magmatic-hydrothermal systems.
Article
Geochemistry & Geophysics
Min Ji, Xiao-Ying Gao, Yong-Fei Zheng, Bing Gong
Summary: The study examines the anatectic mechanisms in the Himalayan orogen, finding that pressure and temperature control the reaction, while water content mainly affects the solid-phase composition. Dehydration and hydration melting likely occur at different depths in the crust. This research provides important insights into the melting processes in collisional orogens.
