Article
Materials Science, Ceramics
Xu Dai, Xi Zhang, Gang Xiang
Summary: Mn-doped beta-Ga2O3 films with room-temperature ferromagnetism were synthesized and the effects of annealing atmosphere on their properties were investigated. The study found that oxygen vacancy plays a crucial role in the modulation of ferromagnetism.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Xu Dai, Xi Zhang, Gang Xiang
Summary: In this study, amorphous Mn-doped gallium oxide films with room-temperature ferromagnetism were prepared by polymer-assisted deposition. The magnetic properties of the films depend on the concentration of Mn and the enhancement of ferromagnetism comes from the strong coupling between oxygen vacancies and Mn ions.
SCRIPTA MATERIALIA
(2022)
Article
Physics, Condensed Matter
Adil Murtaza, Azhar Saeed, Awais Ghani, Fazal Kabir, Xianghao Song, Muhammad Yaseen, Wen-Liang Zuo, Kaili Li, Qizhong Zhao, Chao Zhou, Sen Yang
Summary: In this study, a series of cobalt and terbium co-doped nanocrystals were synthesized by co-precipitation method and their multifunctional properties were investigated. The successful doping of Co and Tb ions in the ZnO lattice was confirmed. All samples exhibited a single-phase hexagonal wurtzite structure. The nanocrystals showed non-uniform distribution, marginal red shift in absorption peak, decreased bandgap energy, broad emission band, and strong ferromagnetism at room temperature.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Crystallography
Muhammad Adil Mahmood, Rajwali Khan, Sattam Al Otaibi, Khaled Althubeiti, Sherzod Shukhratovich Abdullaev, Nasir Rahman, Mohammad Sohail, Shahid Iqbal
Summary: The impact of Co and Gd on the structural, magnetic, and dielectric properties of ZnO nanotubes synthesized by co-precipitation is studied. The results show that incorporating Co and Gd into ZnO decreases crystallinity while maintaining optimum orientation. Co and Gd doping does not affect the morphology of the nanotubes. Decreasing the frequency and concentration of Gd co-dopant leads to an increase in dielectric constant and loss values. The presence of doping results in an inversely proportional relationship between dielectric constant and ac electrical conductivity response. Co and Gd co-doped ZnO nanotubes exhibit ferromagnetic properties at 300K, with an increase in ferromagnetic response as Gd doping increases to 3% and a decrease with further Gd co-doping. Electrical conductivity of the same sample is superior to pure and low Gd doped ZnO, suggesting potential applications in spin-based electronics.
Article
Nanoscience & Nanotechnology
Jayaseelan Dhakshinamoorthy, Sachin Kumar Srivastava, Durgamadhab Mishra, Biji Pullithadathil
Summary: This study explores the interplay between magnetic ordering and excess induced native defects in undoped anatase TiO2 nanoparticles using an experimental and theoretical approach. The research demonstrates that structurally disordered TiO2 nanoparticles with a high concentration of native defects, such as titanium interstitials and oxygen vacancies, are synthesized through controlled atmospheric rapid cooling process. The study also explains the possible origin of magnetic ordering in titanium deficient anatase TiO2 system based on first-principle calculations.
Article
Materials Science, Multidisciplinary
Adil Murtaza, Wen-liang Zuo, Xianghao Song, Awais Ghani, Azhar Saeed, Muhammad Yaseen, Fanghua Tian, Sen Yang
Summary: This work reports on the robust ferromagnetism at room temperature in co-precipitation derived rare-earth (Tb) and transition metal (Co) co-doped ZnO nanoparticles. XRD analysis confirms the single-phase character, while morphological studies show the formation of spherical-shaped particles separated by well-defined grain boundaries. The increase in oxygen vacancies is confirmed through photoluminescence spectra. The (Tb, Co) co-doped NPs exhibit room temperature ferromagnetic behavior, which is discussed based on the role of oxygen vacancies and grain boundaries.
Article
Chemistry, Physical
Ganapathi Bharathi, Devaraj Nataraj, Oleg Yu Khyzhun, Daniel T. Thangadurai, Kittusamy Senthilkumar, Murugaiyan Sowmiya, Ramasamy Kathiresan, Ponmalai Kolandaivel, Mukul Gupta, Deodatta Phase, Nirmalendu Patra, Shambhu Nath Jha, Dibyendu Bhattacharyya
Summary: A graphene system with opened energy bandgap and weak ferromagnetic behavior was prepared through a hydrothermal process, where graphene quantum dots (GQDs) were interconnected by iron (Fe) metal atoms. The interconnected solid sheets exhibited intrinsic optical absorption and photoluminescence properties, while retaining quantum behavior of the GQDs despite their micron size. The structural discontinuity around the metal atoms helped maintain the GQD behavior and the Fe atoms provided weak ferromagnetic behavior at room temperature.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Adil Murtaza, Xianghao Song, Awais Ghani, Fazal Kabir, Azhar Saeed, Wen-Liang Zuo, Muhammad Yaseen, Kaili Li, Chao Zhou, Yin Zhang, Sen Yang
Summary: In this study, Zn0.95-xNdxTM0.05O (TM = Co, Fe) (x = 2%, 6%) nanocrystals with spherical shape and average crystallite size of 35 nm were prepared by sol-gel method, exhibiting ferromagnetic behavior. XPS results confirmed the successful incorporation of dopants ions into the ZnO lattice. The presence of grain boundaries and oxygen vacancies played a significant role in the ferromagnetic response and dielectric properties of the samples.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
D. Anbuselvan, S. Nilavazhagan, A. Santhanam, N. Chidhambaram, K. Gunavathy, Tansir Ahamad, Saad M. Alshehri
Summary: Economically grown multifunctional zinc oxide nanoparticles were studied, along with Ni-doped ZnO nanoparticles, to investigate their ferromagnetic properties at room temperature. Structural and surface morphological features were analyzed using XRD and SEM, while diffused reflectance, photoluminescence, and FTIR spectroscopy were utilized to understand the effects of Ni doping. The presence of lattice defects and intense ferromagnetic properties in 3% Ni-doped ZnO nanoparticles were confirmed through experimental observations, suggesting their potential for spintronics device applications.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Review
Materials Science, Multidisciplinary
Shaffy Garg, Sanjeev Gautam, Jitendra Pal Singh, Asokan Kandasami, Navdeep Goyal
Summary: Defects play a crucial role in controlling d0 ferromagnetism in nonmagnetic oxides, with defects in magnesium oxide created by various phenomena and characterized by different tools. The detailed understanding of these issues is focused on magnesium oxide, a well-known candidate of the d0 ferromagnetic category.
MATERIALS CHARACTERIZATION
(2021)
Article
Engineering, Electrical & Electronic
Eliyash Ahmed, Kasilingam Senthilkumar
Summary: The study found that unintentionally hydrogen-doped zinc oxide nanoparticles exhibit ferromagnetic-like nature due to intrinsic defects. This unusual property is induced by electrons or holes trapped by complex defects, leading to ferromagnetic characteristics.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Physical
Mohamad Hasan Aleinawi, Ameen Uddin Ammar, Merve Buldu-Akturk, Nur Selin Turhan, Shankari Nadupalli, Emre Erdem
Summary: Transition-metal-doped ZnO is a potential dilute magnetic semiconductor for spintronic applications. This report presents the synthesis of manganese-doped ZnO using a microwave-assisted hydrolysis technique, and investigates the defect structure via electron paramagnetic resonance and photoluminescence techniques, revealing that Mn2+ dominates the intrinsic defect species in ZnO.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Inorganic & Nuclear
Pankaj Bhardwaj, Jarnail Singh, Rajesh Kumar, Ravi Kumar, Vikram Verma
Summary: In this study, the suitability of chromium oxide as diluted magnetic oxide was systematically investigated, with nanoparticles doped with Ni2+ ions successfully synthesized. Various analyses confirmed the structural characteristics of the nanoparticles and revealed the presence of oxygen defects. The study also demonstrated marginal changes in optical bandgap and weak room temperature ferromagnetism in the doped nanoparticles.
SOLID STATE SCIENCES
(2021)
Article
Optics
M. Girish, R. Sivakumar, C. Sanjeeviraja
Summary: This study focuses on the different properties of Cd1-xMnxS thin films deposited on glass substrates using a nebulized spray technique at 300 and 400 °C. The structural, compositional, surface morphology, optical, and magnetic properties of the films were investigated. The results show that the structure and optical properties of the films are influenced by Mn concentration and substrate temperature, while the magnetic properties are affected by the interaction between dopant and host lattice electrons.
Article
Nanoscience & Nanotechnology
Lalit Kumar Sharma, Debabrata Mandal, Ravi Kant Choubey, Samrat Mukherjee
Summary: Magnetic transition metal ions co-doped ZnO nanoparticles were synthesized using sol-gel technique with controlled particle size growth. The presence of point defects and weak ferromagnetic interaction mediated by defects were observed in the samples.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Agronomy
Liang Zhang, Zhiyu Zhu, Fangfang Chen, Yueqing Zhu, Xiaocan Guo, Minjie Fu, Jiahong Chen, Jianguo Wu, Zhujun Zhu
Summary: In this study, distant hybridization between radish and kohlrabi was successfully achieved using tissue culture and chromosome doubling technology, resulting in the production of xBrassicoraphanus allotetraploids. The allotetraploid hybrids exhibited normal morphology and fertility, providing a basis for the production of new radish germplasm and serving as a bridge for gene transfer between Brassica and Raphanus vegetable species.
NEW ZEALAND JOURNAL OF CROP AND HORTICULTURAL SCIENCE
(2023)
Article
Meteorology & Atmospheric Sciences
Jianguo Wu
Summary: This study used fuzzy set-based classification, Monte Carlo scheme, and climate shift data to determine the risk of reduction in distributional ranges of alpine graminoid species. The results showed that the main factor leading to range shifts was changes in the temperature index. Adaptation measures are needed to cope with future climatic conditions.
THEORETICAL AND APPLIED CLIMATOLOGY
(2023)
Article
Gastroenterology & Hepatology
Yue Shen, Sheng-Di Wu, Yao Chen, Xin-Yue Li, Qin Zhu, Kiyoko Nakayama, Wan-Qin Zhang, Cheng-Zhao Weng, Jun Zhang, Hai-Kun Wang, Jian Wu, Wei Jiang
Summary: This study aimed to characterize the gut microbiota in patients with chronic hepatitis B virus infection-associated liver diseases (HBV-CLD) and evaluate their effects on peripheral immunity. The results revealed that disease progression and antiviral treatment were the two main factors contributing to the shift in microbiome and metabolome composition in HBV-CLD patients.
Article
Engineering, Electrical & Electronic
Guolin Yang, Xingliang Jiang, Jianlin Hu, Xiaodong Ren, Tao Li, Jianguo Wu, Zhijin Zhang, Qin Hu, Hualong Zheng
Summary: This study investigates the effects of particle concentration, particle size, and particle dielectric constant on the DC breakdown characteristics of unclean air gap. It is found that the presence of solid particles increases the breakdown voltage of the gap, with the increase being related to the particle concentration, size, and dielectric constant. Additionally, the presence of particles enhances both the ionization process and particle adsorption, leading to an increase in the gap breakdown voltage.
Article
Materials Science, Multidisciplinary
Fengliang Liu, Yiqing Hao, Jinyang Ni, Yongsheng Zhao, Dongzhou Zhang, Gilberto Fabbris, Daniel Haskel, Shaobo Cheng, Xiaoshan Xu, Lifeng Yin, Hongjun Xiang, Jun Zhao, Xujie Lu, Wenbin Wang, Jian Shen, Wenge Yang
Summary: Hexagonal LuFe2O4 exhibits various charge-ordered phases with different magnetic orders under external pressure. The redistribution of charge density induced by pressure in the frustrated double-layer [Fe2O4] cluster is responsible for the correlated spin-charge phase transitions. Enhanced Coulomb interactions among Fe-Fe bonds drive the frustrated charge order into a less frustrated charge order, leading to the transition from ferrimagnetism to antiferromagnetism. This study not only elucidates the coupling mechanism among charge, spin, and lattice degrees of freedom in LuFe2O4, but also provides a new approach for tuning spin-charge orders.
NPJ QUANTUM MATERIALS
(2023)
Article
Environmental Sciences
Yan Ding, Dongqi Wang, Guanghui Zhao, Shu Chen, Taihu Sun, Hechen Sun, Chenyang Wu, Yizhe Li, Zhongjie Yu, Yu Li, Zhenlou Chen
Summary: Plant litter input is a crucial factor in the turnover of soil/sediment organic carbon (SOC). This study investigated the effects of leaf litter and stem litter input on SOC dynamics using the 13C isotope technique. It was found that both leaf and stem litter input facilitated SOC accumulation, with leaf litter having a higher contribution. However, leaf litter input also promoted SOC mineralization more than stem litter input. Overall, litter input led to a net increase in SOC accumulation but accelerated the loss of native SOC.
ENVIRONMENTAL RESEARCH
(2023)
Article
Gastroenterology & Hepatology
Yu Song, Jiayi Wei, Rong Li, Ruifeng Fu, Pei Han, Heming Wang, Guangcong Zhang, Shuyu Li, Sinuo Chen, Zhiyong Liu, Yicheng Zhao, Changfeng Zhu, Jimin Zhu, Shuncai Zhang, Hao Pei, Jiefei Cheng, Jian Wu, Ling Dong, Guangqi Song, Xizhong Shen, Qunyan Yao
Summary: TrkB is decreased in liver fibrosis and its overexpression can inhibit the activation of TGF-beta/SMAD signaling and alleviate hepatic fibrosis, making it a potential therapeutic target.
Article
Thermodynamics
Alejandro Gallegos, Jianzhong Wu
Summary: The study aims to develop a predictive model for describing the electrostatic behavior of amino acids in aqueous solutions. A three-bead coarse-grained model is proposed, and a thermodynamic model accounting for nonideality effects is developed to capture how the interaction varies with solution conditions.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Engineering, Civil
Guanghui Zhao, Dongqi Wang, Taihu Sun, Yan Ding, Shu Chen, Yizhe Li, Hechen Sun, Chenyang Wu, Zhongjie Yu, Zhenlou Chen
Summary: Urban rivers are significant hotspots for greenhouse gas (GHG) emissions. This study investigated the impact of different rainfall events on GHG emissions from Suzhou Creek in Shanghai. It was found that typhoon events significantly increased GHG emissions, with factors such as rainfall dilution, pump station drainage, sediment disturbance, and high gas transfer coefficient playing important roles. The study highlights the importance of understanding the dynamic response of urban river GHG emissions to rainfall and typhoons.
JOURNAL OF HYDROLOGY
(2023)
Article
Chemistry, Physical
Debadutta Prusty, Alejandro Gallegos, Jianzhong Wu
Summary: The interfacial behavior of associating species is crucial for both fundamental physics and industrial applications. This study investigates the adsorption behavior of a mixture of nanoparticles and polymer chains, representing asphaltene and resin molecules, onto an attractive surface. The results provide insights into the effects of various characteristics of these molecules on the adsorption amount and reveal the interplay between different driving forces.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Coatings & Films
Yinchun Fang, Jianguo Wu, Shuo Chang, Lingshuang Wu
Summary: This study used bio-based phytic acid (PA) and gelatine (G) to improve the flame retardancy and anti-dripping properties of polyethylene terephthalate (PET) fabric. The coated PET fabric showed a limiting oxygen index (LOI) value greater than 29.5% and no dripping phenomenon, indicating significant improvement in flame retardancy and anti-dripping properties. The PA/G coating altered the decomposition stability and degradation process of PET fabric, promoting the formation of a stable char. The coating formed an intumescent flame retardant (IFR) system on PET fabric, functioning through the IFR mechanism.
SURFACE ENGINEERING
(2023)
Article
Virology
Weijie Chen, Yukun Li, Xiuling Yu, Zhenwei Wang, Wenbiao Wang, Menglan Rao, Yongkui Li, Zhen Luo, Qiwei Zhang, Jinbiao Liu, Jianguo Wu
Summary: In this study, it was found that Zika virus infection upregulated 7-dehydrocholesterol reductase (DHCR7) expression, which in turn facilitated viral infection. The nonstructural protein NS4B of Zika virus interacted with DHCR7 to induce its expression, thereby inhibiting the immune response and facilitating viral evasion. This study expands our understanding of the mechanisms by which viral nonstructural proteins antagonize innate immunity during viral infection via cholesterol metabolic enzymes and intermediates.
Article
Automation & Control Systems
Zhiyong Hu, Chao Wang, Jianguo Wu, Dongping Du
Summary: The development of sensor technologies has allowed the acquisition of high dimensional sensing data, which has led to the development of multi-output modeling techniques for decision making. However, missing values in the data often result in information loss and affect the modeling performance. This study proposes a new multi-output modeling method based on GPLVM to exploit useful information in the data and improve modeling accuracy. The method demonstrates superior performance in both simulation and case studies, making it a powerful tool for process automation.
IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING
(2023)
Review
Biochemistry & Molecular Biology
Hui Chen, Cheng Jin, Li Xie, Jian Wu
Summary: Succinate, an intermediate of the TCA cycle, is crucial in mitochondrial metabolism, energy production, and is also considered a signaling molecule in metabolism and hepatic diseases. Its downstream signaling pathway through GPR91 leads to various intracellular responses, including succinylation, ROS production, HIF-1 alpha stabilization, and significant impact in cellular metabolism due to its role in the TCA cycle. Understanding the signaling mechanisms of succinate in hepatic fibrosis, metabolic reprogramming, inflammatory or immune responses, and carcinogenesis is of great interest. This review aims to provide the current understanding of succinate in mediating metabolism, inflammatory and immune responses in liver diseases, with the aim of establishing a molecular basis for therapeutic strategies.
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR BASIS OF DISEASE
(2024)
Article
Mathematics, Applied
Marco Tosato, Xue Zhang, Jianhong Wu
Summary: We investigate the behavior of solutions to a scalar Delay Differential Equation (DDE) with periodic switching between two constant values. This equation naturally arises in structured vector populations involved in the spread of various vector-borne diseases in a periodically changing environment. We examine the influence of two different time lags and the switching time on the existence and patterns of periodic solutions, with a specific focus on multi-cycles within the prime period.
DIFFERENTIAL EQUATIONS AND DYNAMICAL SYSTEMS
(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)
