Article
Multidisciplinary Sciences
Lutfor Rahman, Salina Rahman, Bristy Biswas, Md. Farid Ahmed, Moksodur Rahman, Nahid Sharmin
Summary: M-type strontium hexaferrite (SrM) was synthesized using co-precipitation technique with different sintering temperatures and mole ratios. The synthesized SrM was characterized and its properties were investigated. The structural parameters, particle size, and magnetic properties of the samples were found to vary with calcination temperature and composition. The synthesized SrM showed potential applications in magnetic recording media and photocatalysis due to its low coercivity, high saturation magnetization, and low band gap energy.
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
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
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
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
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
Materials Science, Paper & Wood
Masahisa Wada, Sayuri Wakiya, Kayoko Kobayashi, Satoshi Kimura, Motomitsu Kitaoka, Ryosuke Kusumi, Fumiko Kimura, Tsunehisa Kimura
Summary: Enzymatic synthesis was used to produce cellulose oligomers with azido groups, which were then used to create cellulose microcrystal suspensions with exposed azido groups on the surface. The microcrystals, in a crystalline form of cellulose II, were several micrometers in length and had a thickness of 5.1-5.2 nm.
Article
Chemistry, Physical
Subodh Shrivastava, Shubhra Mathur, Nutan Sharma, Ankit Kumar Vishwakarma, Chagan Lal Saini, S. P. Nehra
Summary: In this study, conducting MWNT/PANI nanocomposite was successfully synthesized using in-situ oxidative polymerization at low temperatures. The physicochemical properties of the nanocomposite were characterized, and the effect of MWNT loading on the gas sensing properties for hydrogen gas was analyzed. The results showed that the addition of MWNT improved the crystallite, conductivity, stability, and morphology of the composite material. The MWNT/PANI thin film sensor demonstrated high sensitivity and fast response for hydrogen gas detection at low temperatures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Cody Kunka, Apaar Shanker, Elton Y. Chen, Surya R. Kalidindi, Remi Dingreville
Summary: Traditional diffraction techniques are limited by the difficulty of decoding desired material information, but using machine learning and feature identification can more comprehensively and accurately predict structural information.
NPJ COMPUTATIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Wojciech Lonski, Monika Spilka, Mariola Kadziolka-Gawel, Piotr Gebara, Adrian Radon, Tymon Warski, Katarzyna Mlynarek-Zak, Rafal Babilas
Summary: High entropy alloys with variable silicon content were prepared by two different methods to investigate the influence of cooling rate and chemical composition on their structure and properties. The results showed that increasing silicon content led to a decrease in saturation magnetization, and rapidly cooled plates exhibited the lowest coercive force. The AlCoCrFeNiSi0.75 alloy in plate form exhibited the highest corrosion resistance in a 3.5% NaCl solution, and the addition of Si increased the hardness of the ingots and plates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Azra Parveen, Shraddha Agrawal
Summary: Ni1-xCoxO (x = 0, 3, 7, 10%) nanoparticles were synthesized using microwave gel combustion method. Structural analysis revealed a crystallite size ranging from 13.11 to 19.03 nm, determined by Transmission Electron Microscopy (TEM) and Debye-Scherrer's method. The Co-doped NiO NPs exhibited enhanced dielectric permittivity, ferromagnetic nature, and improved antibacterial activity, making them potential candidates for diluted magnetic semiconductors, spintronic and electronic devices, and antimicrobial nanomaterials development.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Walter J. Williams, Tiankai Yao, Xiaofei Pu, Luca Capriotti
Summary: This study focuses on the micro-burnup (BU) studies of the uranium-zirconium (U-Zr) fuel system, where the microstructure undergoes a transformation from as-fabricated to starting microstructure in the reactor. Two U-Zr specimens were irradiated and the results show that the U-22.5 at.% Zr specimen retained its bulk features, while the U-52.8 at.% Zr alloy transformed into an equiaxed granular microstructure immediately upon reactor insertion. The study also discovers a face-centered-cubic Zr rind on the surface of the sample, indicating a possible diffusion-based process for the Zr-rind decomposition.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Multidisciplinary Sciences
Zhen Chen, Yi Jiang, Yu-Tsun Shao, Megan E. Holtz, Michal Odstrcil, Manuel Guizar-Sicairos, Isabelle Hanke, Steffen Ganschow, Darrell G. Schlom, David A. Muller
Summary: Transmission electron microscopes use electrons with wavelengths of a few picometers to potentially image individual atoms in solids, but their image resolution is often reduced by lens aberrations and electron scattering. By using electron ptychography to solve these issues, researchers have achieved higher image resolution and precision in locating embedded atoms.
Article
Chemistry, Physical
Pratik M. Pataniya, Dattatray Late, C. K. Sumesh
Summary: This study presents WS2/ZnO (WZO) nano-heterostructures with optimized materials properties for high-performance photoelectrocatalytic activity, showing faster hydrogen evolution reaction (HER) compared to pristine WS2 and ZnO. The catalyst has stable HER activity for chrono-amperometry of 25 h and cyclic voltammetry of 2000 cycles, demonstrating visible light-sensitive catalytic activity with significantly reduced over potential. Additionally, the research reports a self-powered and fast photodetection ability with a responsivity of 6.7 mA/W and a maximum photoresponsivity of 1.34 A/W.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Meswa Patel, Pratik M. Pataniya, Dattatray J. Late, C. K. Sumesh
Summary: In this study, Ag-WS2 nanocomposites were successfully synthesized for improved photodetection of visible light, leading to the fabrication of a photodiode with incredible photoswitching ability.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Vineeta Singh, Dattatray J. Late, Anshu Goyal, Shyama Rath
Summary: The transformation process of precursor MoO3 into two-dimensional MoSe2 using Chemical Vapor Deposition method was monitored through micro-Raman spectroscopy. Different morphologies observed during deposition represent different compounds, with each morphology corresponding to specific oxide or oxyselenide phases. The stepwise selenization mechanism of MoSe2 formation was revealed through the Raman and photoluminescence spectroscopy analysis.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Pratik M. Pataniya, Sanjay A. Bhakhar, Mohit Tannarana, Chetan Zankat, Vikas Patel, G. K. Solanki, K. D. Patel, Prafulla K. Jha, Dattatray J. Late, C. K. Sumesh
Summary: The developed pressure sensor based on MoSe2 nanosheets coated on cellulose paper exhibits high pressure sensitivity in a broad pressure range and excellent response towards the detection of machine vibrations. It also shows environmental stability and immune piezo-resistive response to temperature variation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Sachin R. Suryawanshi, Raju T. Shisode, Krishna K. Jagtap, Dattatray J. Late, Sharad S. Suryavanshi, Mahendra A. More
Summary: Pulsed laser deposition was used to deposit a thin adherent coating of HfO2 nanoparticles on Cu2O nanowires, forming a hierarchical assembly of HfO2-Cu2O. The optimized PLD process parameters led to the desired hierarchical morphology, and a plausible growth mechanism was proposed based on SEM results and literature survey. Field emission testing showed that the HfO2-Cu2O hierarchical assembly exhibited superior behavior compared to pristine Cu2O nanowires, highlighting the potential of PLD for fabricating hierarchical structures for novel applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Review
Chemistry, Physical
Aaryashree, Surjit Sahoo, Pravin Walke, Saroj Kumar Nayak, Chandra Sekhar Rout, Dattatray J. Late
Summary: The future of electronics technology will be primarily based on wearable sensing systems, with wearable electronic sensors that do not require external power sources being crucial for portable and mobile applications. This review article presents the recent progress of wearable self-powered smart chemical sensors systems, as well as an overview of various energy conversion and storage technologies for self-powered devices.
Article
Engineering, Electrical & Electronic
Ajay Kumar, Dnyandeo Pawar, Dattatray J. Late, Rajesh Kanawade
Summary: This study proposes and investigates a Fabry-Perot Interferometer-based polyvinyl alcohol-coated sensor platform for non-invasive detection of acetone vapor at room temperature, for the prospective study of diabetes diagnosis. The sensor is simple, miniaturized, flexible, cost-effective, and highly sensitive for low acetone vapor concentration detection.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Pratik Shinde, Pratap Mane, Dattatray J. Late, Brahmananda Chakraborty, Chandra Sekhar Rout
Summary: Hydrogen generation through water splitting is considered efficient in creating high-purity hydrogen. Two-dimensional materials have shown to be efficient electrocatalysts for the hydrogen evolution reaction.
ACS APPLIED ENERGY MATERIALS
(2021)
Editorial Material
Chemistry, Physical
Dattatray J. Late, Steffen Duhm
ELECTRONIC STRUCTURE
(2022)
Article
Engineering, Electrical & Electronic
R. B. Sathe, C. U. Narayankar, R. P. Patil, R. H. Patil, S. B. Patil
Summary: Sol-gel autocombustion method was used to synthesize Ni0.7-xZnxMg0.3Fe2O4 nanoparticles with x = 0.1, 0.2, 0.3, 0.4, and 0.5. The synthesized Zn-substituted Ni-Mg ferrite cubic spinel nanoparticles exhibited a cubic spinel type structure, as confirmed by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy data. Scanning electron microscopy (SEM) analysis showed the microstructure of these ferrites, which were found to have proper stoichiometry without any impurities according to energy-dispersive spectroscopy (EDS) analysis. Vibrating sample magnetometer (VSM) studies revealed that the saturation magnetization and magnetic moment increased with zinc concentration up to x = 0.2, and then decreased for further compositions except x = 0.5.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Monidipa Pramanik, Mukta V. V. Limaye, Mahendra S. Pawar, Dattatray J. Late, Shashi B. Singh
Summary: In this study, vanadium carbide (V(2C)Tx) MXene was successfully synthesized and treated with an ammonia solution under different pressures using a hydrothermal process. The results show that the morphology of V(2)CTx MXene changed from uneven multilayered micrometre-size sheets to uniform few-layered nanometer-size sheets as the pressure increased. The optical and electronic properties were influenced by nitrogen-related defects, quantum confinement, and induced lattice strain due to the post-ammonia treatment.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Engineering, Electrical & Electronic
Prashant H. Shinde, Yogita Padwal, Sanjeewani R. Bansode, Ratna Chauhan, Shrikant Charhate, Rishi B. Sharma, Hassan Fouad, Chiaki Terashima, Suresh W. Gosavi, Dattatray J. Late
Summary: The zinc sulphide-reduced graphene oxide nanocomposite has been synthesized and investigated for its potential use in photocatalysis for dye degradation. The combination of ZnS and rGO results in enhanced photocatalytic properties, with rGO acting as a support for ZnS nanoparticles and preventing their agglomeration.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Prashant H. Shinde, Yogita Padwal, Yogesh Waghadkar, Hassan Fouad, Chiaki Terashima, Ratna Chauhan, Shrikant Charhate, Muthupandian Ashokkumar, Suresh W. Gosavi, Dattatray J. Late
Summary: We have successfully synthesized ZnS-MoS2 nano-heterostructure via hydrothermal method and studied its photocatalytic activity under sunlight. The nano-heterostructure exhibited efficient charge separation and extended light absorption, leading to the generation of electron-hole pairs for the degradation of MB dye molecules. The optimized ZnS-MoS2 sample synthesized at 48 h showed excellent performance with 97% degradation in 30 min, attributed to enhanced crystallinity, good charge carrier ability, optimal heterojunction formation, and well-defined morphology with reduced defects.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Epicurioua A. Frazier, Rajendra P. Patil, Chandrakant B. Mane, Daryoush Sanaei, Fahad Asiri, Seong S. Seo, Hamidreza Sharifan
Summary: This study investigates the potential transformation of pure luteolin in exposure to titanium oxide nanoparticles (TiO2NPs). The concentration of TiO2NPs showed a positive correlation with the structural alteration of luteolin content, with around 20% of luteolin structure being altered in the presence of 100 ppm TiO2NPs. The study also confirmed the adsorption of luteolin onto the surface of TiO2NPs.
Article
Chemistry, Multidisciplinary
Chiteri Gautam, Devyani Srivastava, Gabriele Kociok-Kohn, Suresh W. Gosavi, Vinod K. Sharma, Ratna Chauhan, Dattatray J. Late, Abhinav Kumar, Mohd. Muddassir
Summary: Two Schiff base complexes, [CuL2] (Cu-Sal) and [CoL3] (Co-Sal), were synthesized and characterized. Crystal structure analysis showed a square planar geometry around Cu(ii) and various intermolecular non-covalent interactions in Cu-Sal. Both complexes were used as sensitizers in TiO2 based dye sensitized solar cells (DSSCs), and Co-Sal exhibited better photovoltaic performance than Cu-Sal due to improved light absorption and dye loading.
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)
