Article
Materials Science, Multidisciplinary
Xin Wei, Chen Li, Yan Qi, Zeming Yuan, Qilu Ge, Yanghuan Zhang, Jun Li
Summary: In this study, Fe@C catalyst prepared by chemical blow molding carbonization was combined with mechanical milling to improve the hydrogen storage properties of Mg91Al5Y4 ternary alloy. The Fe@C catalyst has effectively catalytic impact on hydrogen storage kinetics, reducing the activation energy and initial dehydrogenation temperature. However, the influence of Fe@C content on thermodynamics is not very obvious.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Environmental
Jie Qu, Naiju Che, Guoliang Niu, Longfei Liu, Chengliang Li, Yanli Liu
Summary: Biochars prepared from cotton straw, corn straw, and rice husk were modified with ball-milling and iron/manganese oxides to prepare Fe/Mn binary metal oxide-ball milled biochar (Fe/Mn-BMBCs). Fe/Mn-BMBCs had a rough surface with deposits of Fe/Mn oxide nanoparticles, larger specific surface areas, and more oxygen-containing functional groups compared to pristine biochars. The adsorption capacities of Cd2+ on Fe/Mn-BMBCs were 4.8-6.1 times higher than those of pristine biochars. The main mechanisms of Cd2+ adsorption on Fe/Mn-BMBCs were complexation with oxygen-bearing functional groups, ion exchange, Cd2+-pi interaction, and chemical precipitation.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Waseem Ahmad Wani, Harihara Venkataraman, Kannan Ramaswamy
Summary: The study investigates the effect of Co2+ and Mn4+ ions on the optical and electrical properties of bismuth ferrite thin films. It establishes a correlation between Urbach energy tails and current conduction. The variations in Urbach energy tail widths, optical bandgap energies, and J-V curves are studied for the doped films. The results show that Co-doping increases the Urbach energy tail width by 36%, while Mn-doping reduces it by 15%. The optical bandgap of Co-doped and Mn-doped BiFeO3 decreases by 44% and 40% respectively. The study proposes a defect-dependent space-charge-limited conduction mechanism to explain the J-V curve.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Peter Balaz, Emmanuel Guilmeau, Marcela Achimovicova, Matej Balaz, Nina Daneu, Oleksandr Dobrozhan, Maria Kanuchova
Summary: The study demonstrates the feasibility of synthesizing Bi-doped tetrahedrite Cu12Sb4-xBixS13 using an industrial eccentric vibratory mill, with an increase in Bi content resulting in a decrease in thermal conductivity and electrical conductivity. Overall, the degradation effect of Bi doping on the thermoelectric properties of tetrahedrite in these synthesis conditions is illustrated by the resulting figure-of-merit values.
Article
Chemistry, Multidisciplinary
Sontyana Adonijah Graham, Punnarao Manchi, Mandar Vasant Paranjape, Jae Su Yu
Summary: This study presents a new modification strategy to convert primary Si to 2D SiOx nanosheets by introducing a Ca modifier into the Al-Si alloy melt. The resulting 2D SiOx-3D Si hybrid Si-based materials (HSiBM) exhibit significantly improved electrochemical performance, with high capacity retention and cycling stability.
Article
Chemistry, Physical
Yang Gao, Zhizheng Rong, Peng Du, Dejian Sun, Ka Gao, Linan An
Summary: This study prepared a 5 vol% Al2O3 nanoparticles reinforced 6061 Al matrix nanocomposite by mechanical alloying and hot-pressing. The effect of milling time on the morphology of powder and the microstructure and mechanical properties of nanocomposites was investigated. The results showed that milling time influenced the mechanical properties through the distribution of Al2O3 nanoparticles in the Al matrix. A longer milling time was required to achieve uniform dispersion of Al2O3 nanoparticles within Al grains, resulting in improved mechanical properties. The nanocomposite prepared with 50 hours of milling exhibited a tensile strength of 602 MPa and an elongation to failure of 8.8%, which were higher than those of similar materials reported previously.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Farah M. El-Makaty, R. A. Shakoor, Abdelmagid Hammuda, Khaled M. Youssef
Summary: This study compares the thermoelectric properties of coarse-grained and bulk-nanostructured alloys prepared using different techniques. The most interesting finding is the observed change in carrier behavior and thermoelectric properties for the coarse-grained alloy, which is attributed to its unique needle-like microstructure and high lattice strain.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Ceramics
Amir Khesro, Fawad Ahmad Khan, Raz Muhammad, Asif Ali, Majid Khan, Dawei Wang
Summary: Lead-free ceramics with single/mixed perovskite structure and relaxor behavior were successfully synthesized through a solid-state sintering route. The addition of Nd3+ significantly enhanced the breakdown strength and conversion efficiency.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Keyvan Malaie, Mohammad Reza Ganjali
Summary: Spinel nano-ferrites are versatile metal oxides with unique properties, making them promising materials for sustainable energy applications. Recent studies have focused on their use as electrodes in supercapacitors, with different ferrites showing varying electrochemical behaviors in aqueous electrolytes.
JOURNAL OF ENERGY STORAGE
(2021)
Review
Chemistry, Physical
Keyvan Malaie, Zahra Heydari, Mohammad Reza Ganjali
Summary: Spinel nano-ferrites, with high dual electrochemical and photochemical activities, show great potential as (photo) electrocatalysts in solar-to-hydrogen energy conversion systems. Their unique crystal structure and design strategies make them excellent candidates for oxygen evolution reaction catalysts, although they also have performance limitations and room for improvement.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Suyao Man, Xueyang Leng, Jinlong Bai, Sihan Kan, Yanan Cui, Jiaxin Wang, Lingling Xu
Summary: Doping with trivalent samarium (Sm3+) ions is effective for improving the photoelectrochemical performance of bismuth ferrite (BiFeO3) photocathodes for water reduction. The doped samples exhibited significantly enhanced water reduction activity, with the Bi0.95Sm0.05FeO3 composition showing a maximum photocurrent density of 0.1061 mA cm(-2) at 0 V vs. RHE in 0.5 M Na2SO4, which was 5.6 times higher than that of the pristine BiFeO3. The high performance can be attributed to the rational Sm3+ doping, which improves visible light absorption ability, facilitates charge carrier transport kinetics, and hinders the recombination of photogenerated carriers.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Nur Azra Aqilah Mohd Azan, Suresh Sagadevan, Abdul Rahman Mohamed, Amirul Hazwan Nor Azazi, Faiz Bukhari Mohd Suah, Takaomi Kobayashi, Rohana Adnan, Noor Haida Mohd Kaus
Summary: Research was conducted on a magnetic photocatalyst, consisting of biochar and bismuth ferrite, for the degradation of ciprofloxacin antibiotics. The optimal conditions were found to be a photocatalyst dosage of 1.5 g/L and an initial pollutant concentration of 10 ppm, resulting in a photodegradation efficiency of 77.08% after 2 hours of direct sunlight exposure.
Article
Chemistry, Multidisciplinary
Fariba Kaedi, Zahra Yavari, Ahmad Reza Abbasian, Milad Asmaei, Kagan Kerman, Meissam Noroozifar
Summary: Structure and surface area are crucial for catalysts in fuel cells, with SNFM showing promising properties as a support for PdNS modification. The PdNS-SNFM composite exhibits significantly enhanced electrochemical performance compared to PdNS alone, demonstrating potential catalytic activity for diverse small organic fuel electro-oxidation reactions.
Article
Materials Science, Ceramics
Huitao Guo, Fangfang Zeng, Wenrong Xiao, Shenglin Jiang, Yuxin Chen, Bowen Wang, Guifen Fan, Wenzhong Lu, Zhengkai Tu
Summary: BiFeO3-based lead-free ferroelectric is a potential candidate for energy storage applications due to its high spontaneous polarization. By introducing NaNbO3 into BF-BHfT ceramics, high polarization and energy storage density can be maintained. The 0.53BF-0.3BHfT-0.17NN ceramics exhibited high recoverable energy density, good thermostability, frequency stability, excellent fatigue resistance, and constant efficiency under different electric fields, making it a promising candidate for energy storage applications.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Xinzhen Wang, Yongbo Fan, Bin Zhang, Ali Mostaed, Linhao Li, Antonio Feteira, Dawei Wang, Derek C. Sinclair, Ge Wang, Ian M. Reaney
Summary: The new dielectric KBT-BF-SMN ceramics exhibit high discharge energy density and temperature stability, making them promising candidates for pulsed power and power electronics applications.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Mahsa Sedighi, Zahra Mahmoudi, Alireza Ghasempour, Mehdi Shakibaie, Fahimeh Ghasemi, Mahsa Akbari, Samin Abbaszadeh, Ebrahim Mostafavi, Helder A. Santos, Mohammad-Ali Shahbazi
Summary: Inspired by natural resources, glycopolypeptide biopolymers have emerged as a new form of biopolymers in biomedical applications. They have well-defined secondary structures and pendant glycosides, and the ability to self-assemble into diverse structures. The nanostructures of glycopolypeptides have opened up new perspectives in drug delivery, diagnosis, and regenerative medicine due to their stable three-dimensional structures, high drug loading efficiency, excellent biocompatibility, and biodegradability.
JOURNAL OF CONTROLLED RELEASE
(2023)
Article
Pharmacology & Pharmacy
Saba Bazzazan, Kasra Moeinabadi-Bidgoli, Zahra Asghari Lalami, Saina Bazzazan, Mehrnoush Mehrarya, Faten Eshrati Yeganeh, Faranak Hejabi, Iman Akbarzadeh, Hassan Noorbazargan, Mehdi Jahanbakhshi, Nikoo Hossein-khannazer, Ebrahim Mostafavi
Summary: A metal-organic framework based on UIO-66 was prepared to deliver Curcumin into breast cancer cell lines. The UIO-66-Cur exhibited versatile releasing capacity in the acidic milieu and had high anticancer activity.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Editorial Material
Cell Biology
Malgorzata Kujawska, Ebrahim Mostafavi, Ajeet Kaushik
NEURAL REGENERATION RESEARCH
(2023)
Article
Chemistry, Analytical
Fatemeh Khosravi, Mahdi Rahaie, Mohammad Reza Ghaani, Mostafa Azimzadeh, Ebrahim Mostafavi
Summary: Electrochemical nanobiosensors have revolutionized medical diagnosis with their enhanced sensitivity provided by the utilized nanomaterials. In this study, a novel sensitive electrochemical nanobiosensor for miR-155, a biomarker for early breast cancer detection, was introduced. The nanobiosensor utilized a combination of Fe-Ni@rGO, GQD-Ag, and GNS nanomaterials to expand the surface area and conductivity of the electrode, resulting in high sensitivity and specificity for miR-155 detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Shahnaz Majeed, Muthupandian Saravanan, Mohammed Danish, Norul Aini Zakariya, Mohamad Nasir Mohamad Ibrahim, Ezaz Hussain Rizvi, Sharaf un NisaAndrabi, Hamed Barabadi, Yugal Kishore Mohanta, Ebrahim Mostafavi
Summary: This study demonstrates the advantages of using green synthesized silver nanomaterials as cancer therapeutics. The surface modification of the nanoparticles enhances their biocompatibility and cell-penetrating ability. The modified nanoparticles exhibit potential cytotoxic activity against breast cancer cells.
Article
Engineering, Biomedical
Veer Shah, David Medina-Cruz, Ada Vernet-Crua, Linh B. Truong, Eduardo Sotelo, Ebrahim Mostafavi, Maria Ujue Gonzalez, Jose Miguel Garcia-Martin, Jorge L. Cholula-Diaz, Thomas J. Webster
Summary: The conventional physicochemical approaches for producing nanoparticles for biomedical applications have limitations in terms of biocompatibility, requiring additional functionalization. In contrast, green nanotechnology and environmentally friendly nanomaterial synthesis using natural sources have gained attention. This study synthesized selenium and tellurium nanoparticles using extracts from jalapeno and habanero peppers and evaluated their antimicrobial and anticancer properties. The nanoparticles showed different antimicrobial profiles, with tellurium nanoparticles exhibiting a significant antibacterial effect. The nanoparticles also demonstrated cytocompatibility and dose-dependent anticancer effects, with tellurium nanoparticles being biocompatible but having a powerful anti-cancer effect.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Cell Biology
Neda Minaei, Roya Ramezankhani, Atena Tamimi, Abbas Piryaei, Ali Zarrabi, Amir Reza Aref, Ebrahim Mostafavi, Massoud Vosough
Summary: Hepatocellular carcinoma (HCC) is a common and deadly type of liver cancer. Conventional therapies have limited effectiveness, prompting the exploration of novel treatments like immunotherapy. However, the presence of an immunosuppressive tumor microenvironment has hindered the effectiveness of these approaches. Combining immune checkpoint inhibitors or immune checkpoint inhibitors with tyrosine kinase inhibitors has shown promise in overcoming these limitations.
EUROPEAN JOURNAL OF CELL BIOLOGY
(2023)
Article
Chemistry, Analytical
Hamed Barabadi, Hesam Noqani, Fatemeh Ashouri, Abhinav Prasad, Kamyar Jounaki, Kiana Mobaraki, Yugal Kishore Mohanta, Ebrahim Mostafavi
Summary: Nanotechnology has shown remarkable applications in medicine and industry due to its unique properties at the nanoscale. One notable medical use of nanomaterials is their anticoagulant activity, which can prevent blood coagulation and reduce the risk of serious conditions such as strokes and heart attacks. Further research is needed to confirm the safety and efficacy of nanoparticles and to explore their potential as alternatives to conventional anticoagulants. Green synthesis of metal nanoparticles, especially silver and gold nanoparticles, using biological methods is highly recommended. Challenges and alternative approaches for the use of these nanoparticles as anticoagulants have also been discussed.
Review
Medicine, Research & Experimental
Deepika Garima, Deepika Sharma, Arun Kumar, Ebrahim Mostafavi
Summary: Chronic wounds are a significant medical problem that requires extensive attention and alternative treatments. Recent focus on wound management has not effectively promoted chronic wound healing. Extracellular vesicles (EVs) are emerging as a potential therapy for the targeted delivery of therapeutics to both acute and persistent wounds. It is observed that exploring the difficulties and potential outcomes of clinical translation of EV-based therapeutics for wound management has the potential to be adopted as a future therapy.
MOLECULAR THERAPY-NUCLEIC ACIDS
(2023)
Review
Materials Science, Multidisciplinary
Farinaz Hadinejad, Hamed Morad, Mohsen Jahanshahi, Ali Zarrabi, Hamidreza Pazoki-Toroudi, Ebrahim Mostafavi
Summary: Prevention of spreading viral respiratory disease, especially in case of a pandemic such as COVID-19, necessitates mandatory face mask-wearing protocols. However, the extended use of masks increases bacterial growth inside the mask, and the absence of antiviral agents on the mask surface poses a risk of contamination. This article reviews the antiviral activity of metal and metal oxide nanoparticles and suggests incorporating them into nanofibrous structures for improved respiratory protection.
ADVANCED FIBER MATERIALS
(2023)
Review
Chemistry, Inorganic & Nuclear
Nasim Azari Torbat, Iman Akbarzadeh, Niloufar Rezaei, Zahra Salehi Moghaddam, Saba Bazzazan, Ebrahim Mostafavi
Summary: Curcumin, extracted from turmeric, is a potent compound with various pharmacological properties. Incorporating curcumin into biomaterials can enhance its bioavailability, leading to applications in drug delivery, regenerative medicine, cancer therapy, infectious disease treatment, and biosensing.
COORDINATION CHEMISTRY REVIEWS
(2023)
Review
Pharmacology & Pharmacy
Qiyue Wang, Xiaofei Xin, Qihao Dai, Mengjuan Sun, Jinhua Chen, Ebrahim Mostafavi, Yan Shen, Xueming Li
Summary: Medulloblastoma, a common pediatric brain tumor, can be divided into four subtypes. However, issues such as non-selective drug cytotoxicity, low drug accumulation in the brain, and tumor microenvironment pose obstacles to treatment effectiveness. This review summarizes the recent advances in modern therapeutic strategies for medulloblastoma.
PHARMACOLOGY & THERAPEUTICS
(2023)
Review
Chemistry, Multidisciplinary
Ankit Kumar Dubey, Ebrahim Mostafavi
Summary: The use of biomaterials in delivering CRISPR/Cas9 for gene therapy in infectious disease treatment shows tremendous potential and enhanced safety. Biomaterials protect CRISPR/Cas9 components and enable tailored systems for specific genetic diseases. Additionally, biomaterials facilitate precise modification of pathogen genomes for combating viral illnesses.
FRONTIERS IN CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Iman Zare, Reza Taheri-Ledari, Farhad Esmailzadeh, Mohammad Mehdi Salehi, Adibeh Mohammadi, Ali Maleki, Ebrahim Mostafavi
Summary: DNA hydrogels are efficient drug delivery systems that have attracted significant attention in recent years. They can be functionalized to target drug delivery and modify the therapeutic cargoes' half-life. The programmability of these 3D scaffolds allows for fundamental effects, especially in treating cancer diseases.
Article
Cell & Tissue Engineering
Fariba Mohebichamkhorami, Zahra Niknam, Hakimeh Zali, Ebrahim Mostafavi
Summary: Oral mesenchymal stem cells (MSCs) derived from various sources in the oral cavity show promising potential for retinal regeneration. These cells release neurotrophic factors (NFs) to promote axonal regeneration and cell maintenance. They have a wide range of neural differentiation potential and are capable of suppressing oxidative stress, inflammation, and apoptosis.
STEM CELL REVIEWS AND REPORTS
(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)