Article
Chemistry, Physical
Tatyana V. Volkova, Olga R. Simonova, German L. Perlovich
Summary: Evaluation of drug permeability is a complex task. In this study, the permeability of a set of drugs with diverse structures was determined using PermeaPad barrier and Franz diffusion cell. The permeability coefficients were analyzed and correlated with physicochemical properties and structure descriptors. The best fitting equations were derived using solubility and diffusion theory. The study also revealed the impact of pH and 2-hydroxypropyl-b-cyclodextrin on the permeability of selected amphiphilic compounds.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
J. Engels, A. Houben, Ch Linsmeier
Summary: In fusion power plants, a tritium permeation barrier is necessary to prevent the loss of fuel and accumulation of radioactive tritium. Oxide thin films, especially yttrium, show promising results as tritium permeation barrier layers, with successful permeation reduction and determination of permeation activation energy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
D. I. Cherkez, A. V. Golubeva, A. V. Spitsyn, V. M. Chernov
Summary: This study investigated the deuterium permeability of fusion-relevant structural materials produced in Russia and obtained the deuterium diffusion and permeation coefficients for ChS-68 steel. The permeability of V-4Cr-4Ti alloy was also estimated. The study found that, under the same conditions, the deuterium flux permeating through the oxidized Ek-181 RAFMS was the lowest, followed by ChS-68 austenitic steel, and the flux through vanadium alloy was significantly higher.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Chemistry, Physical
Atul Verma, Pandiyarajan Anand, Sanath Kumar, Yen-Pei Fu
Summary: A Cu-cuprous/cupric oxide-based family of catalysts was synthesized via hydrothermal technique and their effects on 4-NP conversion and HER were investigated. Through intensive characterizations, two best catalysts for each application were selected based on their performance in different mechanisms.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Kazunari Katayama, Taku Matsumoto, Akito Ipponsugi, Youji Someya
Summary: From a safety standpoint, understanding the behavior of tritium in the coolant of DT fusion reactors is crucial. This study observed the permeation of tritium from tritiated water to high-temperature, high-pressure water and found that tritium can transfer and permeate through metal materials.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
L. Candido, C. Alberghi, M. Utili
Summary: Efficiently characterizing tritium transfers and releases in Sodium Fast Reactor circuits is crucial for design. A fast and reliable sensor for measuring hydrogen isotopes concentration in sodium, operating under high vacuum conditions, is necessary for ensuring accurate tritium balance control. The paper introduces a new concept of hydrogen isotopes permeation sensor for this purpose.
Article
Materials Science, Coatings & Films
Wei Zhang, Changda Zhu, Jian Yang, Qingsong Chen, Ke Shi, Long Wang, Yongjin Feng, Kaiming Feng, Zhengang Duan, Yuanming Li, Jiali Liao, Yuanyou Yang, Ning Liu, Jijun Yang
Summary: The alpha-Al2O3 coatings prepared by metal-organic decomposition (MOD) method were sealed with aluminum phosphate adhesive, showing good adhesion strength and permeation resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Xin-Dong Pan, Yu-Ping Xu, Tao Lu, Yi-Ming Lyu, Hai-Shan Zhou, Zhong-Shi Yang, Guo-Jian Niu, Xiao-Chun Li, Fei Gao, Guang-Nan Luo
Summary: This study investigated the dissolution, clustering, and diffusion behavior of hydrogen in bulk alpha-Al2O3 through first-principles calculations, revealing that the most stable form of hydrogen in this material is the H2 molecule. The strong attraction between two H atoms at neighboring octahedral interstitial sites can lead to cluster formation. Additionally, the high dissolution energy and migration barrier of the H2 molecule in alpha-Al2O3 make hydrogen permeability low.
CERAMICS INTERNATIONAL
(2021)
Article
Nuclear Science & Technology
Gandolfo Alessandro Spagnuolo, Rodrigo Arredondo, Lorenzo Virgilio Boccaccini, Matti Coleman, Ion Cristescu, Gianfranco Federici, Fabrizio Franza, Belit Garcinuno, Carlos Moreno, David Rapisarda, Fernando Roca Urgorri, Marco Utili
Summary: Under the EUROfusion framework, two reactor architectures are being developed for the EU DEMO, one based on the Water Cooled Lithium Lead concept and the other on the Helium Cooled Pebble Bed concept. These two variants result in different reactor designs due to the use of different coolants and neutron multipliers, necessitating tailored tritium management systems and technologies.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Physics, Fluids & Plasmas
F. R. Urgorri, B. Garcinuno, C. Moreno, D. Rapisarda
Summary: Effective tritium extraction from PbLi flows is crucial for the operation of PbLi based breeding blankets. The use of highly permeable membranes in contact with the PbLi flow can promote tritium extraction via permeation. Analytical expressions for extraction efficiency are derived for both permeation against vacuum and fluid free surface configurations.
Article
Materials Science, Multidisciplinary
Vladislav I. Borodin, Aleksandr V. Lun-Fu, Victor N. Kudiiarov, Andrey M. Lider, Ivan S. Sakvin, Mikhail A. Bubenchikov, Dmitry S. Kaparulin, Vyacheslav A. Ovchinnikov
Summary: The research demonstrates that an increase in corrosion test time reduces the hydrogen diffusion coefficient, indicating the presence of aging defects in the material; during operation, a significant decrease in the diffusion coefficient suggests the formation of numerous defects in the material.
Article
Nuclear Science & Technology
Sota Miura, Kazuki Nakamura, Erika Akahoshi, Juro Yagi, Yoshimitsu Hishinuma, Teruya Tanaka, Takumi Chikada
Summary: This study investigates the synergy of irradiation and corrosion on hydrogen isotope permeation by measuring the deuterium permeation under exposure to liquid lithium-lead for a heavy-ion-irradiated zirconium oxide coating sample. The results show that the irradiated coating significantly reduces the deuterium permeation flux under lithium-lead exposure, and the synergy effect occurs at lower temperatures.
NUCLEAR MATERIALS AND ENERGY
(2022)
Article
Chemistry, Physical
Shuaizhao Jin, Xin Gu, Xiaohan Yu, Xiaoli Guan, Hongjiang Li, Kaili Chu, Xingrui Pu, Shuhong Sun, Yan Zhu, Xiang Liu
Summary: By controlling the sintering temperature, LAKMO films with higher TCR values can be obtained, showing great potential for applications in uncooled infrared bolometers.
APPLIED SURFACE SCIENCE
(2021)
Article
Thermodynamics
Senlei Hou, Zhiwen Wu, Guoxiong Mei, Liang Xiao, Ziheng Li
Summary: A novel oil storage method utilizing flexible oil bladders to store oil in waters is proposed in this study. The method has the advantages of conserving land resources and economic cost, as well as high fire and explosion protection performance. However, the application of this method is limited by oil pollution. To overcome this limitation, the permeation-diffusion combination action mechanism of flexible oil storage in waters is investigated. The study provides theoretical and engineering guidance for the application of flexible oil storage in waters and has certain significance for the development of underwater oil storage.
Article
Nuclear Science & Technology
Kazunari Katayama, Youji Someya, Takumi Chikada, Kenji Tobita, Hirofumi Nakamura, Yuji Hatano, Ryoji Hiwatari, Yoshiteru Sakamoto, Akito Ipponsugi, Makoto Oya
Summary: Tritium permeation rates in the first wall of the blanket and the divertor were estimated by numerical analysis, with the former being higher due to its double layer structure and the latter being lower due to its triple layer structure. If a permeation barrier can reduce the tritium permeation rate in the breeding region by three orders of magnitude, the total tritium permeation rate in the blanket and the divertor was estimated to be 0.71 g/day.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)