Article
Chemistry, Physical
Doyoung Lee, Chang-Lae Kim, Yoonchul Sohn
Summary: The research focused on the formation and growth of intermetallic compounds during reactions between liquid Ga and solid Ni, revealing the presence of a Ga7Ni3 bottom layer and a GaxNi top layer. The experimental results are expected to be valuable for the future incorporation of liquid metals into electronic devices.
Article
Multidisciplinary Sciences
Suravi Islam, Nazia Khatun, Md. Shehan Habib, Syed Farid Uddin Farhad, Nazmul Islam Tanvir, Md. Aftab Ali Shaikh, Samia Tabassum, Dipa Islam, Md. Sajjad Hossain, Ayesha Siddika
Summary: In this study, Yttrium-doped Barium Titanate (Y-BT) perovskite ceramics were synthesized using the sol-gel method and their structural, electrical, and optical properties were investigated. The results showed that the crystallite size of Y-BT initially increased with Y-doping, but decreased with further increase in Y3+ concentration. The Yttrium doping enhanced the dielectric properties and optical band gap energy of the materials.
Article
Chemistry, Physical
Byungwoo Kim, Yoonchul Sohn
Summary: Interfacial reactions between liquid Ga and solid Pd were studied at different temperature ranges, and the growth and precipitation processes of intermetallic compounds were observed. The growth rates at different temperatures were analyzed and possible growth mechanisms were proposed.
SURFACES AND INTERFACES
(2022)
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
Materials Science, Ceramics
Manish Badole, Hari Narayanan Vasavan, Samriddhi Saxena, Asish Kumar Das, Pratiksha Gami, Sunil Kumar
Summary: This study fabricated K0.5Bi0.5TiO3 ceramics with different grain morphologies and demonstrated the strong dependence of electrical properties on grain morphology. The ceramics with plate and rod-shaped grain morphologies exhibited enhanced piezoelectric performance and conductivity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Kriti Batra, Nidhi Sinha, Binay Kumar
Summary: This study reports the influence of Nd-dopant on the structural, microstructural and di-/ferro-/piezo-electrical properties of lead-free binary piezoelectric perovskite system KNN-BNZ. Nd-doping resulted in reduced grain size and curie phase transition temperature, while enhancing the piezoelectric response and fatigue stability of the ceramic material.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Applied
Yanqiu Ma, Jingnan Zang, Mingmin Qing, Yulin Xiao, Huajiang Zhang, Yujie Chi, Yuan Chi
Summary: The glycosylation of egg white proteins with maltodextrin was studied. The glycosylated egg white proteins showed improved gel properties, such as increased hardness, water holding capacity, rheological parameters, and finer gel microstructures. The protein structures were unfolded due to glycosylation, as observed by changes in content of exposed sulfhydryl group and β-sheet, decreased crystallinity, thermal denaturation temperature, and enthalpy. The study provides insights into glycosylation mechanism and a convenient approach to improve the gel properties of egg white proteins.
Article
Chemistry, Applied
Yanqiu Ma, Jingnan Zang, Mingmin Qing, Yulin Xiao, Huajiang Zhang, Yujie Chi, Yuan Chi
Summary: The glycosylation of egg white proteins with maltodextrin was studied and the resulting glycosylated proteins showed improved gel properties such as increased hardness, water holding capacity, rheological parameters, and finer microstructures. The protein structures were unfolded due to extended glycosylation, as evidenced by increased exposed sulfhydryl groups and beta-sheet content, decreased crystallinity, thermal denaturation temperature, and enthalpy. The gel properties were correlated with the structural changes. Overall, this study provides insights into the mechanism of glycosylation and offers a convenient approach to enhance the gel properties of egg white proteins in the food industry.
Article
Chemistry, Physical
Chloe Cherpin, Derek Lister, Frederic Dacquait, Lihui Liu
Summary: Spinel ferrite compounds are of interest for their unique properties. A solid-state method was utilized to produce nickel ferrite, with a mixture of nickel oxide and hematite ground and vacuum-sealed in a quartz vial. The reaction time is crucial for particle morphology, with longer times resulting in dense clusters of particles.
Article
Materials Science, Multidisciplinary
Zaka Ullah, Javed Rehman, Faheem Ur Rehman, Shagufta Gulbadan, Muhammad Adil Mahmood, Muhammad Azhar Khan
Summary: Perovskite type Ba1-xSrxZr0.2Ti0.8O3 ceramics were synthesized using a conventional solid-state reaction method, and their structure and properties were characterized. The results showed that the Ba1-xSrxTi0.8Zr0.2O3 composition does not transform from normal ferroelectric to relaxor ferroelectric in the current range. Diffusivity increases with increasing Sr concentration, while the transition temperature decreases.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
V. Dolezal, V. Jakes, J. Petrasek, P. Ctibor, O. Jankovsky, K. Rubesova, D. Sedmidubsky
Summary: The perovskite-type phase CaCu3Ti4O12 has promising dielectric properties, but the phenomenon of giant permittivity in this material has not been fully explained. In this study, Europium with similar electronegativity and ionic radius as Calcium was tested as a partial or complete substitute. A series of materials, including CaCu3Ti4O12, Eu0.4Ca0.6Cu3Ti4O12, and EuCu3Ti4O12, were prepared using a sol-gel method and sintering. The influence of microstructure and phase composition on the dielectric properties of the samples, as well as the effect of sintering temperature, was investigated. Secondary phases and microstructure were found to play a significant role in improving the permittivity values, which were found to be giant at higher frequencies but significantly different for specific compositions.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Physical
Iztok Naglic, Blaz Leskovar, Zoran Samardzija, Bostjan Markoli
Summary: This study investigated the influence of gallium addition on the phases formed in Al-Mn alloys during casting, revealing that an increase in gallium content led to the formation of IQCs and DQCs in the alloys. Microanalysis showed that IQCs contained more gallium and less manganese compared to DQCs.
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
Materials Science, Ceramics
T. S. Mansour, M. M. S. Wahsh, A. G. M. Othman
Summary: This study examines the impact of sintering temperature and nano boehmite additions on the phase composition, densification, and mechanical properties of porous cordierite ceramics. Sintering temperatures ranged from 1200 to 1400 degrees C. Carbon powder was used as a pore forming agent to increase ceramic porosity. The addition of nano boehmite and carbon significantly increased ceramic porosity and average pore size. The microstructure of the sintered samples showed that the crystallinity of the formed phases increased with increased nano boehmite additions.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Anatolii V. Korneev, Alina R. Izatulina, Mariya A. Kuz'mina, Olga V. Frank-Kamenetskaya
Summary: This study investigates the crystal chemical features and precipitation behavior of natural and synthetic oxalates under biofilm mineralization conditions. By conducting experiments and using various analytical techniques, the crystal structures and phase transitions of lindbergite and glushinskite are characterized. The results have implications for the removal of metal ions from mixed media in bioremediation/bioleaching technologies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Chemical
D. Muhammad, Z. Ahmad, N. Aziz
Summary: This study explores the application of state space model predictive control (SS-MPC) in controlling LDPE polymerization tubular reactor process and shows that MPC is more effective in handling polymer grade transition and disturbance rejection compared to PID controller.
CHEMICAL ENGINEERING COMMUNICATIONS
(2021)
Article
Polymer Science
Piyawadee Luangchuang, Narong Chueangchayaphan, Muhammad Azwadi Sulaiman, Wannarat Chueangchayaphan
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Polymer Science
Piyawadee Luangchuang, Narong Chueangchayaphan, Muhammad Azwadi Sulaiman, Wannarat Chueangchayaphan
Summary: The study examined the influence of ceramic filler types and acrylonitrile content on the properties of NBR vulcanizates, showing that increasing acrylonitrile content and incorporating barium titanate filler can improve the cure speed and mechanical properties of NBR composites.
Article
Energy & Fuels
Savyasachi Shrikhande, G. Uday Bhaskar Babu, Z. Ahmad, Dipesh S. Patle
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2020)
Article
Chemistry, Multidisciplinary
Sim Siong Leong, Zainal Ahmad, Siew Chun Low, Juan Camacho, Jordi Faraudo, JitKang Lim
Article
Polymer Science
Piyawadee Luangchuang, Narong Chueangchayaphan, Muhammad Azwadi Sulaiman, Wannarat Chueangchayaphan
Summary: In this study, high dielectric constant flexible polymers were developed using NBR as the polymer matrix and BT as the filler. The incorporation of BT improved mechanical properties, thermal stability, and dielectric constant of the composites, possibly due to strong interactions between NBR and BT. The results suggest potential applications in producing high-performance dielectric elastomers.
POLYMER INTERNATIONAL
(2021)
Review
Engineering, Chemical
Rasheed O. Kelani, Zainal Ahmad, Dipesh Patle
Summary: This paper provides an overview of studies on mechanistic model-based control of biodiesel production process, focusing on control strategies such as plantwide control, model predictive control, and optimal control. It is found that there is limited application of advanced control strategies in the biodiesel production process, especially within the plantwide control framework. Decentralized plantwide control using a heuristic-based method and simulations is currently being employed to improve the performance of biofuel production. The review highlights the need for a simple, effective, and easily implementable plantwide design control for achieving optimal profitability, controllability, and safety.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Polymer Science
Syifa' Muhammad Sharifuddin, Mohd Shukri Mat Nor, Fathin Asila Mohd Pabli, Wannarat Chueangchayaphan, Zainal Arifin Ahmad, Muhammad Azwadi Sulaiman
Summary: The study aimed to improve the limited applicability of high dielectric constant ceramic materials (such as CCTO) through the fabrication of polymer matrix composites, and the CCTO ceramic powder blended with epoxidised natural rubber showed promising mechanical and electrical properties.
Article
Engineering, Chemical
Hafiz Gadafi Abdul Aziz, Boon Seng Ooi, Abdul Latif Ahmad, Zainal Ahmad, Mohd Azmier Ahmad, Choe Peng Leo
Summary: This study successfully improved the removal of phosphate by producing and modifying calcium carbonate nanoparticles. The incorporation of iron increased the surface area of CaCO3, resulting in significantly enhanced phosphate removal. CaCO3-Fe exhibited different adsorption behavior for phosphate compared to traditional pH-responsive materials.
CHEMICAL ENGINEERING & TECHNOLOGY
(2022)
Proceedings Paper
Green & Sustainable Science & Technology
Mohamed O. M. Mashri, Megat Azmi Megat Johari, M. J. A. Mijarsh, Zainal Arifin Ahmad
PROCEEDINGS OF AICCE'19: TRANSFORMING THE NATION FOR A SUSTAINABLE TOMORROW
(2020)
Proceedings Paper
Green & Sustainable Science & Technology
Ramzi J. Shaladi, Megat Azmi Megat Johari, Zainal Arifin Ahmad, M. J. A. Mijarsh
PROCEEDINGS OF AICCE'19: TRANSFORMING THE NATION FOR A SUSTAINABLE TOMORROW
(2020)
Proceedings Paper
Green & Sustainable Science & Technology
Otman M. M. Elbasir, Megat Azmi Megat Johari, M. J. A. Mijarsh, Zainal Arifin Ahmad
PROCEEDINGS OF AICCE'19: TRANSFORMING THE NATION FOR A SUSTAINABLE TOMORROW
(2020)
Article
Engineering, Environmental
W. C. Leong, R. O. Kelani, Z. Ahmad
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
Article
Multidisciplinary Sciences
Chee Lung Chin, Zainal Arifin Ahmad
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2020)
Article
Engineering, Electrical & Electronic
Shahanawaz Kamal, Abdullahi S. B. Mohammed, Mohd Fadzil Bin Ain, Fathul Najmi, Roslina Hussin, Zainal Arifin Ahmad, Ubaid Ullah, Mohamadariff Othman, Mohd Fariz Ab Rahman
PROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS
(2020)
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)
