Article
Multidisciplinary Sciences
Muhammad Asim Shahzad, Hafiz Tariq Masood, Muhammad Farooq Warsi, Zaheer Abbas Gilani, Abdullah Saad Alsubaie, Khaled H. Mahmoud, Salah M. El-Bahy, Zeinhom M. El-Bahy, Muhammad Azhar Khan, Muhammad Asghar
Summary: Nanocrystals of Pb1-4.75xNd0.5xNi4xZrO3 (where x = 0.00, 0.01, 0.02, 0.03, 0.04 and 0.05) were synthesized by a wet chemical route and characterized using various techniques. The addition of dopant materials (Nd3+ and Ni2+ metal ions) was found to affect the properties of the nanocrystals.
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Arfa Riaz, Muhammad Azhar Khan, Muhammad Junaid, Shagufta Gulbadan, Alina Manzoor, Syeda Rabia Ejaz, Ghulam Abbas Ashraf, H. H. Somaily, Manal Morsi, Thamraa Alshahrani
Summary: The substitution of Neodymium in cobalt-zinc ferrite was analyzed, and its effects on the structural, magnetic, and dielectric properties were investigated.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Ceramics
Chetna C. Chauhan, Tanuj M. Gupta, Reshma A. Nandotaria, Abhishek A. Gor, Charanjeet Singh Sandhu, Kanti R. Jotania, Rajshree B. Jotania
Summary: The study synthesized a series of M-type hexaferrites using citrate gel auto combustion method, showing various magnetic properties and influencing factors of cobalt substitution on dielectric properties.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Applied
Najme Molaahmadi Bahraseman, Hajar Shekarchizadeh, Sayed Amir Hossein Goli
Summary: The study found that the interaction between tragacanth gum and gelatin during acidification is influenced by total concentration, biopolymer mixing ratio, and ionic strength. Different types of complexes are formed at specific pH values, affecting the efficiency of complex formation.
Article
Materials Science, Multidisciplinary
K. E. Rady, Asmaa Reda Abd El-Salam, Ezzat A. ELFadaly, Mobarak Hassan Aly
Summary: Mn-substituted Co-Zn ferrite nanomaterials were prepared and their structural and electrical properties were investigated. The increase in Mn concentration led to an increase in grain size and lattice parameter. The proposed cation distribution model was confirmed, and enhanced dielectric properties were obtained by substituting Mn ions.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Bhagyashree Mohanty, S. Bhattacharjee, S. N. Sarangi, N. C. Nayak, R. K. Parida, B. N. Parida
Summary: In this study, a single-phase material 50BLFO-50BST was successfully synthesized with good crystallinity and optical properties. The investigations of dielectric, impedance, and modulus properties suggest the material has potential electromagnetic characteristics. The material is identified as a promising candidate for magnetic storage devices based on the room temperature ferromagnetic parameters.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Gulzar Ahmad Lone, Mohd Ikram
Summary: This study investigates the structural and dielectric properties of pristine and Ni-doped spinel CoFe2O4. The samples were synthesized using a solid-state reaction approach, and the structural analysis confirmed a single-phase FCC cubic spinel structure. The cationic distribution revealed changes in occupancy due to doping. SEM and EDS were used for microstructural and elemental composition analysis. The study found the presence of orientational and interfacial polarization in the samples. The dielectric constant showed a temperature-dependent behavior, with an increase observed after reaching a certain temperature. CoFe1.9Ni0.9O4 exhibited low dielectric loss and strong relaxation behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Shagufta Gulbadan, Muhammad Azhar Khan, Ghulam Abbas Ashraf, Khalid Mahmood, Muhammad Shahid, M. Irfan, Abrar Ahmad
Summary: Ba0.6Sr0.4-xYbxFe12-yCoyO19 M-type hexaferrite was synthesized using the auto combustion sol-gel process and sintered in a muffle furnace. XRD, FTIR, Raman, and Photoluminescence spectroscopies were used to analyze the samples. The XRD patterns confirmed the single phase of the synthesized samples. Changes in Yb-Co concentration affected lattice parameters and unit cell volume. FTIR spectroscopy revealed the formation of multiple absorption bands. Raman spectra showed strain in the unit cell. PL spectra exhibited emissions in the range of 630 nm-700 nm. The substitution improved dielectric losses and AC conductivity. The findings suggest that samples with appropriate cationic substitution can be used for microwave and high-frequency applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Al-Zoha Warsi, Omima K. Hussien, Ayesha Iftikhar, Fatima Aziz, Dalal Alhashmialameer, Samy F. Mahmoud, Muhammad Farooq Warsi, Dalia I. Saleh
Summary: In this study, the photocatalytic degradation ability of Ag2O/CuO nanocomposite was investigated, revealing its efficient removal of colored and colorless dyes. By optimizing the preparation method, the nanocomposite exhibited higher degradation efficiency compared to individual metal oxides. The results demonstrate that the synthesized nanocomposite has tremendous potential for degrading toxic pollutants in a short period of time.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Condensed Matter
M. N. Panwar, Hasan M. Khan
Summary: The sol-gel auto-combustion method was used to synthesize Ca1-xBixFe12-xCoxO19 M-type hexaferrites. The synthesized hexaferrites exhibited a single phase M-type hexagonal structure with a crystallite size of 23.51-23.08 nm. Doping led to decreased bulk and X-ray densities, but increased porosity. The synthesized hexaferrites showed good potential for high frequency applications due to their high coercivity values and hard nature.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
Muhammad Wajad, Hasan M. Khan, Abdul Waheed, Muhammad Zahid, Muhammad Misbah Ur Rehman, Mohammad Hussein, Muhammad Ehsan Mazhar, Muhammad Nauman Usmani, Muhammad Imran Khan
Summary: Sol-gel auto-combustion technique was used to synthesize X-type hexagonal ferrites with different Ni content. The samples were annealed at 1050 degrees C, and XRD and SEM were employed to confirm the formation of X-type hexaferrites and observe the morphology of the samples respectively. The dielectric parameters exhibited frequency-dependent behavior, with higher values recommending the material for high-frequency applications such as EMI attenuation. Moreover, the optimized dielectric nature of the hexaferrites suggests their potential use in manufacturing multilayer chip inductors.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Hangfeng Zhang, A. Dominic Fortes, Henry Giddens, Theo Graves Saunders, Matteo Palma, Isaac Abrahams, Haixue Yan, Yang Hao
Summary: In this study, a new type of material with antiferroelectric characteristics has been reported, despite having a polar crystal structure. The material exhibits double polarization-electric field hysteresis loops over a wide range of electric field and temperature, which is different from previous observations. The study also reveals the phase transitions and structural changes in the material, and confirms its stable dielectric performance in the microwave frequency range.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Rukhsana Kausar, Muhammad Azhar Khan, Shagufta Gulbadan, Muhammad Junaid, Altaf Hussain, Alina Manzoor, H. H. Somaily, Mohamed S. Attia, Mohammed A. Amin
Summary: This study investigates the impacts of nickel substitution on the dielectric, magnetic, and structural characteristics of Ba4Cu2-xNixFe36O60 hexaferrites prepared by the sol-gel method. Various analytical techniques were used to analyze the crystalline structure, magnetic properties, and dielectric features of the samples. The results show that these nanomaterials are suitable for high-frequency applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Physics, Condensed Matter
P. Raji, K. Balachandra Kumar
Summary: Calcium doped Copper ferrite nanoparticles were synthesized and their structural, elastic and magnetic properties were investigated. The results showed that calcium doping can affect the crystallite size, shape and magnetic behavior of copper ferrite.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
Mohd Arif Dar, D. Govindarajaran, Khalid Mujasam Batoo, Muhammad Hadi, G. N. Dar
Summary: This paper reports the preparation of Tin Selenide (SnSe) nanoparticles through co-precipitation method and their characterization using various techniques. The SnSe nanoparticles showed good crystalline structure and electrocatalytic performance, making them suitable for photovoltaic and supercapacitor applications.
MATERIALS TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Muhammad Arshad, Muhammad Azhar Khan, Ghulam Abbas Ashraf, Khalid Mahmood, Muhammad Imran Arshad
Summary: A series of (Zr-Co) substituted Y-type polycrystalline hexaferrite were fabricated by sol-gel auto combustion method, and their structural and electrical properties were investigated. The addition of Zr4+-Co2+ metal cations resulted in an increase in lattice parameters and a decrease in grain size. The formation of pure single-phase Y-type hexaferrites was confirmed by X-ray powder diffraction and FTIR spectra. The electrical resistivity, dielectric properties, and complex impedance spectroscopy indicated that the substitution of Zr4+-Co2+ ions significantly influenced the conduction and dielectric behavior of the nano ferrite materials.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
M. K. Anser, M. Ahmad, M. A. Khan, A. A. Nassani, S. E. Askar, K. Zaman, M. M. Q. Abro, A. Kabbani
Summary: This study examines the role of technology transfer in preventing communicable diseases, and finds that technological innovation, including innovative capability, absorptive capacity, and healthcare competency, can help reduce the occurrence of infectious diseases. Factors such as patent applications, scientific and technical journal articles, trade openness, hospital beds, and physicians also contribute to the reduction of infectious diseases.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Muhammad Azhar Khan, Sohail Afzal, Shagufta Gulbadan, Khalid Mahmood, Ghulam Abbas Ashraf, Majid Niaz Akhtar
Summary: Nano-crystalline Gd-substituted X-type hexaferrites with different Gd concentrations were synthesized and their properties were studied. X-ray diffraction confirmed the single and pure phases of hexagonal ferrites. The dielectric properties showed frequency dependence and suggested potential applications in high-frequency devices and supercapacitors. Raman spectra and SEM images further supported the findings.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Condensed Matter
Memoona Mehmood, Muhammad Nasir Rasul, Altaf Hussain, Muhammad Amir Rafiq, Faisal Iqbal, Alina Manzoor, Muhammad Azhar Khan
Summary: In this study, the physical properties of novel antiperovskite materials XCRh3 (X = Cd, Ta, W, Re, Os, Ir, Pt, Au, Hg, Ce, Pr, Nd, Pm, Sm, Eu, Tb) were investigated using density functional theory. The study focused on structural, electronic, elastic, magnetic, and thermodynamic properties, and included the computation of mechanical parameters and analysis of thermodynamic properties under various pressures and temperatures.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Public, Environmental & Occupational Health
Aqeel Khan, Shiraz Khan, Muhammad Azhar Khan, Khalid Zaman, Haroon ur Rashid Khan, Arieff Salleh Bin Rosman, Yasinta Indrianti, Abidin Ali Hassan
FRONTIERS IN PUBLIC HEALTH
(2023)
Review
Engineering, Biomedical
Muzamil Hussain, Sami Ullah, Muhammad Rafi Raza, Naseem Abbas, Ahsan Ali
Summary: This review summarizes the current research status on Zn-based biodegradable materials, discusses the biological function of Zn in bone metabolism and new cell growth, and introduces methods to improve material performance by alloying elements and post-processing techniques.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Syeda Rabia Ejaz, Muhammad Azhar Khan, Shagufta Gulbadan, Muhammad Shahzad Shifa, Ghulam Murtaza
Summary: Nanocrystalline X-type hexaferrites with the composition Sr2-xCaxNi2-yBayFe28O46 (x = y = 0-0.5) were synthesized via sol-gel auto-combustion method. The inclusion of Ca-Ba significantly altered the porosity, X-ray density, and ac conductivity of the synthesized materials. The dielectric constant values of all compositions were higher than Sr2Ni2Fe28O46, making these materials suitable for high dielectric constant applications. VSM analysis showed decreased magnetic properties with increasing Ca-Ba concentration, suggesting potential use in memory devices, microwave absorption, and magnetic radar-absorbing materials for high-frequency applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Ceramics
Qurat Ul Ain Shahid, Muhammad Azhar Khan, Shagufta Gulbadan, Ghulam Abbas Ashraf, Raqiqa Tur Rasool
Summary: A series of erbium-substituted Z-type hexaferrites were synthesized and sintered using the sol-gel auto combustion method. The substitution of erbium ions into the hexagonal lattice improved the structural parameters. Changes in dielectric parameters were observed with erbium substitution. The materials showed potential for applications in microwave absorbers, resonant circuits, and high-frequency devices due to their high-quality factor and small crystallite size.
CERAMICS INTERNATIONAL
(2023)
Article
Biology
Muhammad Asam Raza, Umme Farwa, Fatima Ishaque, Abdullah G. Al-Sehemi
Summary: Computational designing of four different series of thiazolidinone was conducted by condensing various amines with different aldehydes. In silico molecular investigations using density functional theory (DFT), molecular docking, and ADMET studies were performed. Quantum mechanical modeling approach with Gaussian predicted the electrochemical parameters of the compounds. Docking software was used to dock the compounds against PDB files of chickenpox, human immunodeficiency, hepatitis, and monkeypox virus. Molecular interactions were visualized with discovery studio, and D8 compounds showed the highest binding affinity against 4QWO (-13.383 kcal/mol). Compound D5 had the highest binding affinity against 1VZV (-12.713 kcal/mol). The drug-likeness of the designed compounds was assessed using Swiss ADME web tool, and it was concluded that these molecules had a drug-like structure with minimal violations.
COMPUTATIONAL BIOLOGY AND CHEMISTRY
(2023)
Article
Environmental Sciences
M. Abdullah, G. Murtaza, Muhammad Azhar Khan
Summary: CuFe2O4 nanoparticles were synthesized via the sol-gel auto combustion method and hybridized with layer-structured graphene. The nanoparticles exhibited a crystallite size up to 53 nm, with variations depending on the copper ferrite content. Fourier transform infrared spectroscopy confirmed the presence of carboxyl stretching, aromatic stretching, and Fe-O bonds. Scanning electron microscopy images revealed the surface morphology of the nanoparticles and nanocomposites, while vibrating sample magnetometer results showed their magnetic properties. Energy dispersive X-ray spectroscopy and Brunauer-Emmett-Teller surface area analysis confirmed the composition and surface characteristics of the materials. The composite demonstrated excellent adsorption capacities for As(III) and As(V) due to the synergistic effect of CuFe2O4 and graphene.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Agronomy
Muhammad Shahid, Muhammad Farrukh Saleem, Amna Saleem, Muhammad Sarwar, Muhammad Aown Sammar Raza, Shakeel Ahmad Anjum, Arshad Hussain
Summary: High temperature stress during reproductive stages of wheat is a major constraint for achieving food security. This study aimed to investigate heat sensitivity of terminal stages of wheat, optimize foliar selenium dose, boost nonenzymatic antioxidants, and determine their correlation with yield and quality attributes of wheat crop. The field experiment was conducted for two consecutive years, and the results showed that H-1 had a more damaging impact compared to H-2 and H-0. Foliar spray of 75 mg L-1 selenium proved to be more beneficial under H-0, while 100 mg L-1 selenium was more beneficial under H-1 and H-2. Strong associations between biochemical and agronomic traits were observed.
CEREAL RESEARCH COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Wasim Tahir, Muhammad Azhar Khan, Raqiqa Tur Rasool, Shagufta Gulbadan, Abdul Majeed, Gulfam Nasar
Summary: This study investigates Cu-substituted W-type hexagonal ferrites with a novel composition Sr0.5Ba0.5Co1.2CuxZn0.8-xFe16O27 and analyzes their structural, spectral, dielectric, and magnetic properties. The results demonstrate the potential applications of these materials in optoelectronic devices and self-biased microwave devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Kanwal Majeed, Muhammad Azhar Khan, Raqiqa Tur Rasool, Shagufta Gulbadan, Abeer A. AlObaid, M. Irfan, Ghulam Abbas Ashraf, Ghazanfar Nazir, Majid Niaz Akhtar
Summary: Recently, nano-sized Z-type hexagonal ferrites with Indium substitution have been synthesized and shown to have excellent properties for microwave absorption and resolving EM pollution. These materials also have significant applications in EM interference shielding and radar cross-section reduction, making them suitable for stealth technology.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Physics, Condensed Matter
Muhammad Asif, Muhammad Junaid, Muhammad Azhar Khan, Raqiqa Tur Rasool, Muhammad Javed Akhter
Summary: The effect of Nd3+ ion substitution on the structural, morphological, ferroelectric, and dielectric properties of Y1xNdxFeO3 was investigated. The substitution changed the shape of particles and caused the splitting of vibrational characteristic bands. The substituted YFO exhibited increased dielectric constant and low dielectric losses, suggesting their potential use in multilayer chip inductors.
PHYSICA B-CONDENSED MATTER
(2023)
Review
Biochemistry & Molecular Biology
Faisal Haroon, Umme Farwa, Maimoona Arif, Muhammad Asam Raza, Zeshan Ali Sandhu, Mohamed El Oirdi, Mohd Farhan, Mohammed Ahmed Ismail Alhasawi
Summary: PABA, as a versatile building block, has the potential to develop novel molecules with various medical applications. PABA compounds have been found to possess anticancer, anti-Alzheimer's, antibacterial, antiviral, antioxidant, and anti-inflammatory properties, making them potential therapeutic agents in the future. This study primarily focuses on PABA-based therapeutic chemicals as molecular targets and their usage in biological processes.
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)
