Article
Chemistry, Physical
Munmun Basak, Md Lutfor Rahman, Md Farid Ahmed, Bristy Biswas, Nahid Sharmin
Summary: Cobalt ferrite nanoparticles were synthesized using co-precipitation technique with different precipitating agents, affecting the structure and size distribution. Various analysis methods showed highly correlated results, with SSP method being the most compatible.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Masaki Tahara, Kazuya Hasunuma, Hideki Hosoda
Summary: This study investigated the decomposition process of the isothermal alpha '' phase in beta-Ti alloys, and found that the resulting alpha + beta dual phase inherited the microstructural characteristics of the alpha ''(iso) phase. The research results indicate the existence of a strict variant selection rule between the decomposed alpha and beta phases, with a specific variant combination observed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Mehmet Erman Mert
Summary: The study investigated the efficiency of hydrogen production by doping nickel foam precursors with nickel, cobalt particles, and decorating with silver nano-domes. The catalyst NF/NiCo-2/Ag showed the best performance in terms of lower hydrogen overpotential, higher HPE, stability, and response during the electrolysis process in 1 M KOH.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Elisabetta Esposito, Laura Calderan, Andrea Galvan, Enrica Cappellozza, Markus Drechsler, Paolo Mariani, Alessia Pepe, Maddalena Sguizzato, Enrico Vigato, Edoardo Dalla Pozza, Manuela Malatesta
Summary: This study investigated the transdermal fate of ethosomes and transethosomes on human skin. The results showed that the vesicle penetration capability was influenced by their physical-chemical features, with different vesicles reaching different levels of the skin. This offers potential for tailored transdermal drug delivery based on specific cutaneous pathologies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Felix Utama Kosasih, Stefania Cacovich, Giorgio Divitini, Caterina Ducati
Summary: This study investigates the effect of electrons on a model hybrid halide perovskite, focusing on the relationship between electron dose, data quality, and beam damage. The primary manifestation of electron beam damage in the perovskite specimen is found to be the loss of iodine due to vacancy creation, with iodine content decreasing exponentially with electron dose. The systematic variation of acquisition parameters demonstrates data acquisition and analysis strategies for studying electron beam damage and achieving reliable quantification for a broad range of beam-sensitive materials.
Article
Chemistry, Physical
Okkyun Seo, Jaemyung Kim, Jiayi Tang, L. S. R. Kumara, Koji Kimoto, Kazushi Miki, Akifumi Matsuda, Mamoru Yoshimoto, Osami Sakata
Summary: This research focuses on the influence of atomic arrangement on the electrical and catalytic properties of oxide thin films. The atomic arrangement of LiNiO2 thin films was investigated by uniaxial compression and annealing at 600℃ on sapphire substrates. Thin films with a rock-salt structure were grown using pulsed laser deposition method at room temperature. It was observed that the as-grown thin films transformed from a rock-salt to a layered structure after uniaxial compression at 600℃, and the layer thickness of the latter structure increased with increasing uniaxial compression pressure. Uniaxial compression provides a useful tool for oxide thin film research, contributing to the development of new functional oxide materials and adjustment of the atomic ordering of cation materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
S. Jublot-Leclerc, G. Bouhali, F. Pallier, A. Declemy
Summary: The study found that at low He concentrations, increasing implantation temperature led to enhanced point defect recombination at RT, resulting in lower strain. However, when He concentration exceeded a certain level, thermally activated mechanisms promoting the formation of He-V complexes overcame point defect recombination, leading to increased strain and damage accumulation.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Jacob Obitso Nielsen, Flemming Bjerg Grumsen, Karen Pantleon
Summary: This study investigates the evolution of crystallite size and microstrain in ferrite in real time using energy-dispersive synchrotron diffraction, providing insights into the thermal stability and phase transformations of iron-carbon coatings.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
N. B. Pradeep, M. M. Rajath Hegde, G. C. Manjunath Patel, Khaled Giasin, Danil Yu Pimenov, Szymon Wojciechowski
Summary: This research article discusses the synthesis and characterization of a Ti alloy powder using a high-energetic ball milling process. The study focuses on the formation of ternary Ti alloy with Mg and Sr additions, and the characterization results show the generation of nonequilibrium intermetallic phases and partial amorphization during the ball milling process.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Food Science & Technology
Kotaro Matsui, Takamichi Kamigaki, Ryota Wakui, Yuri Nishino, Yoshiko Ito, Atsuo Miyazawa, Koichiro Yoshioka, Makoto Shiota
Summary: The physical properties of butter are influenced by its microstructure, and a novel observation method using AFM without pretreatment process was proposed in this study to observe the fat crystal structure. Measurements of milk fat-crystalline nanoplatelets were conducted using TEM and SAXS, revealing the thickness and structure of the fat crystals. Through this observation method, the relationship between the physical properties of butter and its fat crystal network can be discerned, benefiting the bread and confectionery industries in improving butter processing conditions.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
M. Agrawal, D. Bhuyan, R. K. Pandey, A. Sharma, R. Manna
Summary: The novel steel composition produced carbide-free nanostructured bainite by austenitizing and isothermal treatment, with electropulsing driving cementite precipitation and enhancing hardness.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Biochemistry & Molecular Biology
Weronika Sofinska-Chmiel, Marta Goliszek, Marek Drewniak, Aldona Nowicka, Marcin Kusmierz, Agnieszka Adamczuk, Paulina Malinowska, Ryszard Maciejewski, Malgorzata Tatarczak-Michalewska, Eliza Blicharska
Summary: Determining the composition of kidney stones is crucial for treatment plans, understanding causes, and preventing recurrence. This study investigated the shape and chemical makeup of multicomponent kidney stones using techniques such as FTIR, XRD, and electron microscopy with the EDX detector. XPS was also used to gain a better understanding of the chemical structure, and FTIR microscopy was used for chemical mapping. This comprehensive examination of nephrolithiasis was made possible by utilizing modern research methods, particularly spectroscopic techniques.
Article
Chemistry, Physical
A. A. Yadav, Y. M. Hunge, Bo-Kyong Kim, Seok-Won Kang
Summary: A NiCo2O4 nanowire/NiCo2O4 nanosheet composite with a hierarchically arranged morphology showed enhanced electrochemical performance as a high-performance supercapacitor, with higher specific capacitance and cycling stability.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Shike Li, Yanming Zhu, Yang Wang, Jing Liu
Summary: The study quantitatively characterized the coal structure using various techniques, showing different distributions of aromatic structural units in coals of different ranks, and indicating that as disorder increases, the molecular structure of coal undergoes changes.
Article
Chemistry, Physical
Woonbae Sohn, Ji Su Chae, Geon Hae Lim, Kwang Chul Roh
Summary: A Li0.27K0.72Ni0.6Co0.2Mn0.2O2 (LKNCM) cathode obtained via ion exchange shows promising potential for potassium-ion batteries (PIBs). The morphological and structural changes during K+ ion insertion were revealed, and the extracted Li+ ions and inserted K+ ions were found to be comparable in quantity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Kun Wang, Chengyi Hou, Qinghong Zhang, Yaogang Li, Hongzhi Wang
Summary: This study reports a flexible scrolled thermoelectric (TE) module with high-density p-n junctions achieved by rolling a patterned carbon nanotube film and a cellulose acetate nanofiber membrane. The module demonstrates high integration and output voltage density. A fiber-shaped TE device is designed by interconnecting the scrolled modules, and p-n junctions are realized in both axial and radial directions. Furthermore, the fiber-shaped TE device can be woven with commercial yarns to construct TE fabric for harvesting thermal energy.
Article
Chemistry, Multidisciplinary
Chuanyue Sun, Jiabei Luo, Shengchang Yan, Kerui Li, Yaogang Li, Hongzhi Wang, Chengyi Hou, Qinghong Zhang
Summary: Smart textiles with good mechanical adaptability are crucial in personal protection, health monitoring, and aerospace applications. This study introduces skin-core structures of thermally responsive fibers with multiple commercial fiber cores and temperature-responsive hydrogel skins, which exhibit rapid mechanical adaptability, good thermohardening, and thermal insulation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Zhiyuan Bai, Ran Li, Lu Ping, Qingchao Fan, Ziqiu Lu, Chengyi Hou, Qinghong Zhang, Yaogang Li, Kerui Li, Xi Ling, Hongzhi Wang
Summary: This study demonstrates the remarkable electrochromic (EC) performance of VTG-based devices under an ultralow voltage. The working energy consumption of VTG devices is significantly lower than traditional EC devices and other display technologies, making them highly applicable in various fields.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Chuanming Tian, Yu Zhao, Xuefei Han, Bin Li, Yichuan Rui, Hao Xiong, Yu Qiu, Wei An, Kerui Li, Chengyi Hou, Yaogang Li, Hongzhi Wang, Qinghong Zhang
Summary: This study introduces a multifunctional additive, 2-BTFSIP, to achieve defect passivation and crystallization control in perovskite films, leading to significantly improved performance and stability of perovskite solar cells.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Caohua He, Jianqi Sun, Chengyi Hou, Qinghong Zhang, Yaogang Li, Kerui Li, Hongzhi Wang
Summary: This study investigates a novel ionogel electrolyte (IGE) that utilizes ceramic ionic conductormetal organic framework (MOF) core-shell nanocomposites to enhance its ionic conductivity, electrochemical window, and thermal stability. The sandwich-structural IGE shows high performance and capacity retention in practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jianqi Sun, Caohua He, Yaogang Li, Qinghong Zhang, Chengyi Hou, Michael De Volder, Kerui Li, Hongzhi Wang
Summary: In this study, a solid-state nanocomposite ionogel electrolyte (n-CIE) is proposed to improve the cycling stability of Li metal batteries by utilizing an interface-active silica scaffold and an encaged ionic liquid electrolyte (ILE). The n-CIE exhibits high ionic conductivity and significantly enhanced Li+ transference number, leading to steady plating/stripping without dendrites and stable capacity retention in symmetrical cells and full cells.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Analytical
Jun Xia, Jiabei Luo, Boya Chang, Chuanyue Sun, Kerui Li, Qinghong Zhang, Yaogang Li, Hongzhi Wang, Chengyi Hou
Summary: Bioinformation is crucial in daily life, and wearable bioelectronics are important for real-time bioinformation sensing. However, current conductive hydrogel fibers used in wearable bioelectronics have significant disadvantages. This study reports the synthesis of a zwitterionic organohydrogel (ZOH) fiber that overcomes these drawbacks. The ZOH fiber shows excellent properties such as transparency, stretchability, long-term stability, and low light transmission loss. It can be integrated into fabric and used as a bioinformation sensor, proving its capability for monitoring motion and bioelectric signals. The study also confirms the potential of the ZOH fiber in optogenetic applications.
Article
Engineering, Environmental
Wei Gu, Shengchang Yan, Jian Xiong, Yaogang Li, Qinghong Zhang, Kerui Li, Chengyi Hou, Hongzhi Wang
Summary: Smart gloves are being researched as additional solutions for vision and voice interaction interfaces. However, there is a trade-off between functionality, performance, and cost due to limitations in hand gesture recognition capability. A recyclable and stretchable sensing fiber based on liquid metal and thermoplastics has been developed, enabling highly accurate hand gesture signals and reducing design complexity. Combined with machine learning, three hand gesture recognition systems have been successfully constructed, demonstrating the potential of wireless smart gloves for widespread practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yanfang Wei, Jiabei Luo, Weifeng Yang, Wei Gong, Yaogang Li, Qinghong Zhang, Kerui Li, Chengyi Hou, Hongzhi Wang
Summary: This study reports a lightweight, flexible, highly elastic, and superhydrophobic hybrid aerogel-based fabric that offers both electromagnetic interference and infrared shielding functions. A nanotape-enabled multi-crosslinked hybridization strategy enhances the fabric's mechanical properties. Optimized synergy gain engineering between metal and semiconductor significantly improves the fabric's electrical conductivity, electromagnetic interference shielding effectiveness, and infrared shielding performance. The fabric, used for broadband electromagnetic management clothing, shows excellent prospects for safety and thermal management applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
YunHe Xu, Bo Wu, Yang Guo, Chengyi Hou, Yaogang Li, Hongzhi Wang, Qinghong Zhang
Summary: A stretchable thermoelectric device with liquid metal electrodes is proposed in this study, which can achieve a temperature reduction of 7.8K (+/- 0.2) and generate a voltage of 26.2mV when worn. By integrating nickel-doped EGaIn liquid metal electrodes and a flexible silicone matrix, the stretchable thermoelectric device can maintain excellent cooling even when stretched to strains above 30%, showing promising prospects for wearable coolers.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Qingchao Fan, Hongwei Fan, Kerui Li, Chengyi Hou, Qinghong Zhang, Yaogang Li, Hongzhi Wang
Summary: Stretchable electrochromic devices were fabricated using wrinkled, semi-embedded Ag@Au nanowire networks as conductive electrodes. These devices showed much more stable color changes between yellow and green compared to those with pure Ag nanowire networks, thanks to the inert Au layer inhibiting the oxidation of Ag nanowires. Additionally, the devices maintained excellent color-changing stability even under 40% stretching/releasing cycles due to the deformable and reversibly stretched semi-embedded structure.
Article
Chemistry, Physical
Jingjie Wang, Weifeng Yang, Zhaoxu Liu, Yun Su, Kerui Li, Yaogang Li, Qinghong Zhang, Chengyi Hou, Hongzhi Wang
Summary: Fiber electronics integrated into daily life have enormous potentials in healthcare, physiological monitoring, and human-machine interfaces. We developed a scalable manufacturing process to produce fine and soft self-powered interactive fiber electronics. These fiber electronics can be manufactured at a high speed and integrated into textiles, improving their tactile comfort. The interactive fiber electronics-based smart clothing demonstrates versatile applications including energy harvesting, vital signal detecting, motion recognizing, and tactile sensing based on tribotronics.
Article
Engineering, Electrical & Electronic
Boya Chang, Jiabei Luo, Jun Xia, Chuanyue Sun, Kerui Li, Yaogang Li, Qinghong Zhang, Hongzhi Wang, Chengyi Hou
Summary: Wearable monitoring devices are important for long-term signal monitoring of the human body. This study presents a conductive elastic composite electrode that has excellent tensile and stable electrical properties for bioelectric monitoring. The electrode has a stable open circuit potential and low impedance, as well as good wear and water resistance, making it suitable for long-term electrocardiogram (ECG) signal monitoring. Additionally, the integration of fiber electrodes with traditional clothing opens up new possibilities for wearable wireless ECG acquisition systems.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xinbo Gong, Chengyi Hou, Qinghong Zhang, Yaogang Li, Hongzhi Wang
Summary: Responsive structure color fibers and fabrics have been developed for colorimetric detecting of VOCs. Thermoplastic polyurethane inverse opal (TPU IOs) fabrics were prepared to achieve colorimetric detection by sacrificing SiO2 photonic crystal templates. The TPU IOs fabrics showed large reflection peak shifts and a good linear relationship between concentration of VOCs and reflection peak value. The response times were fast and the stability was good.
Article
Chemistry, Multidisciplinary
Tianyi Ji, Wei Gong, Jie Zhou, Yangmin Jing, Ruizhe Xing, Bingjie Zhu, Kerui Li, Chengyi Hou, Qinghong Zhang, Yaogang Li, Hongzhi Wang
Summary: Rarely are bionic robots able to deform rapidly in multiple dimensions and identify objects like animals and plants. This study introduces a topological deformation actuator for bionic robots, inspired by octopus predation behavior, using pre-expanded polyethylene and large flake MXene. The actuator exhibits different molecular chain distributions at different temperatures, allowing for axial changes in deformation direction. With its multi-dimensional deformation and self-powered object identification capabilities, the actuator can capture objects like an octopus. The contact electrification effect assists in identifying the type and size of the target object during the controllable and designable deformation process. This work presents a new approach for practical and scalable bionic robots by directly converting light energy into contact electrical signals.
MATERIALS HORIZONS
(2023)
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)
