Article
Materials Science, Ceramics
Mengzhu Liu, Junhao Hu, Hongwei Wang, Yongpeng Wang
Summary: This study focuses on the preparation and characterization of a series of carbon nanofibers/ZnO/TiO2/Ti(3)C(2)Tx composites with flower-branch hierarchical architecture for electromagnetic wave absorption. The composites showed enhanced absorption performance due to their unique morphology and component design.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Yanhong Lu, Suling Zhang, Meiyu He, Lei Wei, Yu Chen, Ruina Liu
Summary: With the increasing electromagnetic pollution, there is a strong demand for advanced electromagnetic wave shielding and absorbing materials that are multifunctional with ultra-lightweight, wide bandwidth, highly flexible, and robust. 2D nanomaterials like graphene and MXene have shown great potential for these applications, while 3D cross-linked graphene or/and MXene based materials have demonstrated excellent EMI shielding and MA performance.
Article
Nanoscience & Nanotechnology
Bin Du, Dongyang Zhang, Junjie Qian, Mei Cai, Chao He, Peng Zhou, Anze Shui
Summary: This study fabricates carbon nanofiber (CNF) and SiC-CNF aerogel films using bacterial cellulose as scaffolds, showing excellent microwave absorption and low thermal conductivity properties. The microwave absorption properties of the aerogels are significantly enhanced by in situ growth of SiC nanowires, resulting in enhanced electromagnetic wave absorption.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Materials Science, Ceramics
Xiangming Li, Liangsheng Zhu, Dongyue Sun, Qing Yang, Yingxia Liu, Wanjun Yu, CuiCui Lv
Summary: By adding stainless-steel wire mesh screens, the microwave absorbing performance of interference microwave absorbing cermet composites can be improved. The double-layer screens significantly enhance microwave interference and further enhance absorption performance.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Huimin He, Yanran Li, Hongzhen Liu, Yoonseob Kim, Aixin Yan, Lizhi Xu
Summary: Recent research has shown the potential of conductive hydrogels for advanced soft bioelectronic devices, but the existing materials often lack strong mechanical properties. Aramid nanofiber-based hydrogels offer a combination of high elasticity, strength, and electrical conductivity, making them suitable for large-strain sensors and antimicrobial medical devices. These composites have the versatility for further functionalization and scalable fabrication in sophisticated bioelectronic systems.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Leiting Weng, Xiang Lei, Jingping Liu, Huixia Hu, Jinliang Wang, Zhiqian Zhang
Summary: In this study, carbon coated iron nickel nanoparticles were synthesized and their morphology, structural composition, and microwave-absorbing properties were analyzed. The results showed that the nanoparticles exhibited excellent impedance matching and microwave-absorbing performance due to their unique microscopic network structure. Through the analysis of loss mechanisms, it was found that the nanoparticles had high dielectric loss and magnetic loss characteristics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Polymer Science
Huiru Yang, Aiping Wang, Xincong Feng, Hailing Dong, Tao Zhuang, Jing Sui, Shugao Zhao, Chong Sun
Summary: A novel microwave absorbing rubber containing homemade Polypyrrole nanotube (PPyNT) was developed based on natural rubber (NR) and acrylonitrile-butadiene rubber (NBR) blends to meet the comprehensive demand for flexible microwave absorbing materials. The content of PPyNT and NR/NBR blend ratio were adjusted to achieve optimal microwave absorbing performance in the X band. The 6 phr PPyNT filled NR/NBR (90/10) composite showed superior microwave absorbing performance with a minimum reflection loss value of -56.67 dB and an effective bandwidth of 3.7 GHz at a thickness of 2.9 mm.
Article
Chemistry, Inorganic & Nuclear
Guoxin Ding, Chuanxin Chen, Hongxu Tai, Zhongfeng Tang, Zhoufeng Wang, Guojun Cheng, Xianglong Wan
Summary: Efficient preparation of microwave absorbers with thin thickness, strong absorbance, broad bandwidth and low filler loading remains a significant challenge. In this study, copper ferrite/reduced graphene oxide composites were synthesized and their microwave absorption properties were found to be greatly influenced by the content of graphene oxide. The maximum reflection loss value was -58.7 dB at 9.2 GHz with a thickness of 2.56 mm, indicating excellent absorption ability.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Haijun Pan, Fa Luo, Xin-Yuan Feng, Yuchang Qing, Qiang Chen, Chun-Hai Wang, Zhaowen Ren, Hanyi Nan, Song Wang, Shichang Duan
Summary: A SiC fiber-reinforced mullite ceramic-matrix composite with a carbon nanosphere network (CNSN) in the SiC interface was prepared. The composite showed significant improvement in flexural strength and failure displacement due to the contribution of CNSN towards interface debonding, fiber slipping, and individual fiber pull-out. The complex permittivity of the composite was enhanced, leading to increased effective absorption bandwidth and minimum reflection loss.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Engineering, Manufacturing
Tianpei Sun, Zhiwei Liu, Shuang Li, Hansong Liu, Fan Chen, Kai Wang, Yan Zhao
Summary: The microwave absorbing performance of MX/CF/Epoxy composites was significantly improved by the 3D foam structure, interface polarization, and dipole relaxation, providing new ideas for the application potential of epoxy resin-based composites in the field of microwave absorption.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Physical
Na Tian, Chukai Wang, Caiyin You
Summary: A facile approach was proposed to fabricate nanospherical CoFe2O4/Ti3C2Tx composites with excellent microwave absorption performance. The composite exhibited synergistic effects of dielectric loss, magnetic loss, multiple reflection, and conductive loss due to its unique structure and impedance matching. With 80 wt% CoFe2O4 and a matching thickness of 2.6 mm, the CoFe2O4/Ti3C2Tx composite demonstrated a minimum reflection loss (RLmin) of -77.2 dB at 8.0 GHz, making it a promising microwave absorbent.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Baoji Miao, Yange Cao, Qingsong Zhu, Muhammad Asif Nawaz, Jose Antonio Ordiozola, Tomas Ramirez Reina, Zhiming Bai, Junna Ren, Fengchun Wei
Summary: The development of modern microwave communication technology requires the resolution of signal crosstalk and electromagnetic interference (EMI) problems for better working frequency and transmission power of electronic systems. New absorbing materials such as MoS2/TiO2/Ti2CTx and MoS2/Ti2CTx composites meet the criteria of thin, strong, lightweight, and wideband for excellent absorbing performance. The MoS2/Ti2CTx composite, with an extreme reflection loss (RLmin) of -54.70 dB at a frequency of 7.59 GHz and a thickness of 3.39 mm, achieves a maximum effective absorption bandwidth (EABmax) of 4 GHz.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Materials Science, Ceramics
Xiaojun Chen, Hongyang Liu, Dechao Hu, Huaqing Liu, Wenshi Ma
Summary: Carbon nanotubes have emerged as a potential candidate to address issues related to electromagnetic pollution and interference, offering advantages like high dielectric loss and remarkable thermodynamic stability. Recent advances in CNTs-based microwave absorbing materials have shown promising prospects, particularly in the development of composites for better microwave absorption capabilities.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Environmental
Lu Xing, Yangbing Chen, Yijun Yang, Chenchen He, Tong Wu, Huixin Xia, Kejie Shen, Guoxiu Tong, Wenhua Wu
Summary: Porous 3D interlinked C nanofiber/FexOy (CNF/FexOy) wafers were synthesized and showed significantly enhanced properties. The properties of the wafers can be manipulated by adjusting Fe3+ concentration and annealing temperature. The CNF/FexOy wafers exhibit high heat conductivity, wide absorption band, excellent EMI shielding effectiveness, and enhanced mechanical/hydrophobicity properties, making them promising fillers for high-performance EMI shielding/absorption and thermal control in flexible electronics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Physics, Multidisciplinary
Meng-Zhou Chen, Liu-Ying Wang, Gu Liu, Chao-Qun Ge, Di-Chen Li, Qing-Xuan Liang
Summary: This paper investigates the microwave absorption properties of the gradient dendritic fractal metamaterial structure (GDFMs) based on carbon black and acrylonitrile-butadiene-styrene composites. The optimized metamaterial structure shows effective absorption in the frequency range of 4.5-40 GHz. The rotational-symmetry GDFMs exhibit polarization independence and wide-angle absorption performance for both TE and TM waves. It is expected that the proposed GDFMs have good application prospects in electromagnetic wave absorption.
Article
Clinical Neurology
Yu-Ju Chou, Ying-Hsuan Tai, Ying-Xiu Dai, Din-Dar Lee, Yun-Ting Chang, Tzeng-Ji Chen, Mu-Hong Chen
Summary: There is a significant association between obsessive-compulsive disorder (OCD) and autoimmune skin diseases (ASDs). Patients with OCD have a higher risk of developing ASDs compared to the control group. There are significant associations between OCD and seven individual ASDs.
Article
Materials Science, Multidisciplinary
L. M. Yan, Y. X. Dai, W. B. Wang, Y. F. Yang, S. Mi, H. Wang, J. P. Hao, D. Yang
Summary: This study proposes a novel heat treatment process to improve the mechanical properties and corrosion resistance of 7055 aluminum alloy. The CPt455+T6 treatment results in excellent mechanical properties and corrosion resistance due to the synergistic effects of intragranular nanosized precipitates and a narrow precipitate-free zone.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Yuxin Dai, Liangming Yan, Jianpeng Hao
Summary: The intermetallic phase evolution during homogenization of an Al-Zn-Mg-Cu-Zr-Nd alloy was investigated. The addition of Nd affected the dissolution and transformation of different phases, leading to the formation of stable intermetallic phases. Homogenization kinetics analysis determined the optimal homogenization conditions for the alloy.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Physical
Lin Qi, Kun Wang, Yujie Qi, Hui Yu, Xiaoshi Jin, Xin Li, Yang Qi
Summary: A facile and reproducible low-temperature aqueous solution deposition method was used to grow ZnO films along diverse preferred orientations. The non-epitaxial growth pattern was achieved without the use of surfactants or passivated agents. The anisotropic ZnO films exhibited isotropic transmittance in transmission spectra and multifarious defect types and quantities in visible emission spectra. This research enriches the crystallographic growth of ZnO films and has implications for designing ZnO film-based nanodevices with desirable performances.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Spectroscopy
Ruijie Duan, Xiaoming Li, Yuxiang Dai, Yongli Liu, Yang Qi, Wengang Liu, Ben-Guo He
Summary: In situ high-pressure Raman spectroscopy experiments were conducted to investigate the structural changes of parabanic acid (PA) under high pressure conditions. The analysis of Raman spectroscopy revealed two phase transitions in PA. The first phase transition, occurring above 2.1 GPa, was attributed to the collapse of spacing between molecular layers and distortion of hydrogen-bonding networks in the ac-plane. The second phase transition, around 4.0 GPa, was caused by further reduction of molecular interlayer spacing and resulting distortion of the hydrogen-bonding network. First-principle calculations and Hirshfeld surfaces confirmed the experimental results. The analysis of high-pressure phase transitions provides a better understanding of the phase transition process in layered supramolecular materials with hydrogen-bond self-assembly. This study also suggests the possibility of two new polymorphs for PA under high pressure and expands its potential applications in supramolecular chemistry.
JOURNAL OF RAMAN SPECTROSCOPY
(2023)
Article
Food Science & Technology
Yuxiang Dai, Ngarmbaye Masra, Lu Zhou, Chen Yu, Wei Jin, Hongbin Ni
Summary: The aim of this study was to investigate the antitumor effects of Hederagenin on glioma through in vitro research. The results showed that the proliferation, invasion, and migration abilities of U251 and U87 cells were significantly inhibited in the Hed-treated groups. However, the antitumor effects of Hed disappeared with Nur77 transfection.
FOOD SCIENCE & NUTRITION
(2023)
Article
Chemistry, Multidisciplinary
Yang Qi, Bushi Dai, Bowen Zhang, Yuxiang Dai
Summary: This study discusses the introduction of sulfur atom doping structures in graphite crystals of carbon fibers to achieve the synergy of multiple microwave absorption mechanisms. The effect of graphite defect type on the electromagnetic wave absorption performance of sulfur-doped carbon fibers is investigated. The heterogeneous atom-doped structure is considered an efficient way to fabricate microwave absorbers with a wide effective bandwidth and strong absorption capability.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Cardiac & Cardiovascular Systems
Shalaimaiti Shali, Lingfeng Luo, Kang Yao, Xiangdong Sun, Hongyi Wu, Shuning Zhang, Lili Xu, Wei Gao, Jianxuan Li, Juying Qian, Yan Zheng, Yuxiang Dai, Junbo Ge, GRAND investigators
Summary: The study aimed to evaluate the usefulness of the triglyceride-glucose (TyG) index in identifying young coronary artery disease (CAD) patients and predicting their risk of developing target lesion failure (TLF). The results showed that the TyG index was positively associated with the prevalence of CAD and incident TLF.
CARDIOVASCULAR DIABETOLOGY
(2023)
Article
Chemistry, Physical
Bowen Zhang, Yang Qi, Qing Guo
Summary: This paper investigates the effects of film thickness on the crystallographic, morphological, and superconducting properties of Bi2212 superconducting thin films. The results show that the surface roughness increases with increasing film thickness and stabilizes after reaching a certain thickness, while superconductivity is destroyed at very small sample thickness. In the Bi2212/LaAlO3 structure, the sample exhibits excellent surface quality with a roughness of 5.4 nm at a thickness of about 18 nm for Bi2212, and the growth of the precipitated phase is inhibited to a greater extent. This study provides a further research basis for the preparation of high-quality Bi2212 films and offers further possibilities for their practical application.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Xingming Zhao, Fachang Zhao, Yang Qi, Jian Zhang, Weizhen Wang, Xiaoming Lu, Chi Zhang, Fufa Wu, Mingguang Wang, Tianlin Wang
Summary: It was found that the performance of superconducting films with heterogeneous structures is significantly affected by the interface structure and strain. The interface structure and strain of a Bi2Sr2CaCu2O8+delta superconducting thin film fabricated using the sol-gel technique were investigated. The results showed that the interfacial atomic sequence and lattice mismatch relaxation methods play a role in the compressive strain of the film.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Qing Guo, Qingtian Ma, Bowen Zhang, Yuxiang Dai, Yang Qi
Summary: In this study, the synthesis of ZnO films by chemical bath deposition with the assistance of zinc chloride as an additive was investigated. The films were characterized using various techniques, and the results showed that by changing the concentration of zinc chloride, ZnO films with different preferential growth orientations can be obtained, which exhibit good optical transmittance and different visible emissions. It was also found that the concentration of Cl- can affect the defects and preferred orientations of the ZnO films.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Jinze Zhu, Yiming Feng, Bushi Dai, Yang Qi
Summary: Growth of high-quality ZnO nanomaterials along specific orientations is still a hot topic. In this study, ZnO nanofibers with various orientations were demonstrated. Electrospinning ZnO fibers acted as seed templates for fabricating ZnO crystals with different orientations, depending on the increased volume ratio of isopropanol (IPA) in the chemical bath deposition (CBD) solutions. The characterization of ZnO nanofibers showed that ZnO crystals experience a growth transition from polar to nonpolar orientation, due to the enhanced steric hindrance caused by the increased IPA volume fraction in CBD solutions. An effective synthesized approach was applied in this work to grow ZnO nanostructures with specific crystal orientations.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Ophthalmology
Yi-Ting Ko, Yu-Ming Wu, Hsiang-Ling Wu, Shih-Chung Lai, Ying-Xiu Dai, Tzeng-Ji Chen, Yih-Giun Cherng, Ying-Hsuan Tai, Chia-Yu Kao
Summary: This study found a significant association between inflammatory bowel disease (IBD) and dry eye disease (DED) as well as corneal surface damage.
Article
Chemistry, Multidisciplinary
Bowen Zhang, Yang Qi
Summary: In order to increase the critical current density of Bi2212 superconducting films, a series of Bi2Sr2CaCu2O8+delta-xRE(2)O(3) (RE = Er/Y) (x = 0, 0.04, 0.08, 0.12, 0.16, 0.20) thin films were prepared using the sol-gel method. The structure, morphology, and superconductivity of the RE2O3 doping films were characterized in detail, and their effects on the superconductivity of Bi2212 films were investigated. It was found that increasing the doping level of RE2O3 led to an increase in the grain size of Bi2212 films in the out-of-plane direction. The doping had no significant effect on the anisotropy of Bi2212 crystal growth but inhibited the agglomerative growth of the precipitated phase on the surface. The superconducting transition temperature (Tc, onset) was almost unaffected, while the zero resistance transition temperature (Tc, zero) decreased with increasing doping level. The thin film samples Er2 (x = 0.04) and Y3 (x = 0.08) showed the highest current-carrying capacity in magnetic fields.
Article
Toxicology
Yuxing Dai, Kun Duan, Guangye Huang, Xuemin Yang, Xingtao Jiang, Jianwen Chen, Peiqing Liu
Summary: This study evaluated the effects of electronic cigarette smoke (ECS) and cigarette smoke (CS) on lung function and pulmonary inflammation in mice. The results showed that both ECS and CS impair lung function and histopathology while promoting inflammation, but ECS has a less negative impact than CS.
FRONTIERS IN TOXICOLOGY
(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)
