Article
Chemistry, Physical
Z. Li, R. Parsons, H. Kishimoto, T. Shoji, A. Kato, J. Karel, K. Suzuki
Summary: This study investigated the glass-forming range, microstructural features, and soft magnetic properties of (Fe(1-x-)yCo(x)Ni(y))(86)B-14 alloys. It was found that Fe-rich compositions have the largest glass-forming range and exhibit nano-scale grains with bcc and fcc structures after ultra-rapid annealing. The coercivity and saturation magnetic polarization of the nanocrystalline alloys are affected by Co and Ni content, with Co addition generally increasing coercivity and saturation magnetic polarization, while Ni addition has the opposite effect.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Zunhang Lv, Kaihang Wang, Yingying Si, Zihan Li, Tianpeng Yu, Xin Liu, Guixue Wang, Guangwen Xie, Luhua Jiang
Summary: By judiciously engineering the electrocatalysts, the researchers successfully designed a Co-P/Ni-Fe-P/NF electrode with excellent electrocatalytic activity for hydrogen evolution reaction in alkaline medium. The electrode exhibited a low overpotential of 43.4 mV at 10 mA cm-2 and demonstrated long-term stability for 72 hours. This innovative work may contribute to further development of commercial electrocatalysts.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Engineering, Environmental
Mohsen Jalali, Mahdi Jalali, Vasileios Antoniadis
Summary: This study investigates the effects of different amendments and low-molecular-weight organic acids on the release of potentially toxic elements (PTEs) from soils. The highest release of PTEs was observed with citric acid, followed by oxalic and malic acids. The addition of poultry manure was found to be the most environmentally friendly amendment. The results highlight the importance of considering cadmium (Cd) in order to prevent environmental pollution.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Radoslaw Drozd, Magdalena Szymanska, Katarzyna Przygrodzka, Jakub Hoppe, Grzegorz Leniec, Urszula Kowalska
Summary: The study developed a new magnetic carrier based on functionalized citric acid (CA) bacterial cellulose, successfully introducing a sufficient number of carboxylic groups for supporting critical industrial enzymes immobilization, which improved the enzymes' thermal stability and operational stability.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Materials Science, Coatings & Films
Wei Jiang, Mengyuan Huang, Yuanxia Lao, Xuegeng Yang, Changan Wang, Zongjun Tian, Shengqiang Zhou, Gerd Mutschke, Kerstin Eckert
Summary: A new method of magnetic-field-assisted jet plating is presented for manufacturing Ni-Co-SiO2 alloy films. The influence of different Co2+ ion concentrations in the electrolyte on the resulting properties of the deposits is investigated. The magnetic field assists in achieving lower Co content in the films, leading to grain refinement and inhibiting abnormal Ni-Co co-deposition, resulting in smooth and dense alloy films with superior soft magnetic properties and corrosion resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yoshiki Konno, Takayo Yamamoto, Tomio Nagayama
Summary: A manganese ferrite porous oxide film was fabricated using an electroplating-anodising method, providing a large electrode surface area for oxygen reduction/evolution reactions due to its nanoporous/microcrack hierarchical structure. The electrochemically active surface area and onset potentials of the porous oxide films on Fe-Mn alloys were significantly higher than those of spinel iron oxide, indicating better ORR/OER activities.
Article
Materials Science, Ceramics
Jie Liu, Chunmiao Liu, Yanchun Tong, Haibin Sun, Hui Peng, Mingwei Zhang, Shigang Wu, Hongying Zhang, Hongyu Gong, Zhiqin Zheng, Xue Guo, Yurun Feng
Summary: In this study, SiCN/Fe/Ni ceramics codoped with iron acetylacetonate and nickle acetylacetonate were synthesized using the polymer-derived ceramics method. The microstructure, phase composition, and electromagnetic wave absorption properties were analyzed. The results showed that the materials had high polarization loss and conduction loss, leading to excellent electromagnetic wave absorption performance.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Masaya Toda, Hao Xu, Takahito Ono
Summary: A ferromagnetic iron-platinum (FePt) film is deposited on a Si resonator by electroplating and patterned to form a magnetic sensor, with optimized electroplating and annealing conditions. The patterned FePt film, with a nearly 1 atomic ratio of Fe to Pt, is achieved through lift-off method, resulting in a miniature Si resonator capable of detecting a minimum magnetic field of 20 nT. The localized magnetic field detection using patterned magnets on resonators offers a magnetic moment sensitivity of approximately 10^5mu(B).
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Tian Xie, Haixia Zhao, Zunhang Lv, Guangwen Xie, Yan He
Summary: This study demonstrates a facile Nb2O5-decorated electrocatalyst for efficient hydrogen evolution and oxygen evolution performance in alkaline media, achieving a low overpotential and high current density.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Dung T. To, Sun Hwa Park, Min Joong Kim, Hyun-Seok Cho, Nosang V. Myung
Summary: The electrocatalytic activities of the hydrogen evolution reaction (HER) were evaluated and correlated with the composition, crystal structure, and crystallinity. Deposits with mixed phases exhibited the highest electro-chemically active surface area (ECSA), leading to enhanced exchange current density and overpotential. Low overpotentials were observed with specific Mo content. Tafel slope and exchange current density showed no dependence on Mo content, crystal phase, and grain size when normalized with ESCA. The metallic Ni-Mo thin films exhibited low mixed potential and overpotential at 10 mA/cm2.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jiawei Wang, Yuyi Wei, Yifan He, Cunzheng Dong, Xianqing Lin, Huaihao Chen, Xianfeng Liang, Chengju Yu, Mingmin Zhu, Yi Zhang, Jun Ni, Nian X. Sun
Summary: Co-Fe-C alloy films have attracted attention for their excellent magnetic properties, with thermal annealing improving their performance. Medium carbon doping in the alloy films provides high thermal stability, attributed to stable structure phases and element distributions during thermal annealing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
B. Brahma, R. Hussain, Aakansha, Pratap Behera, S. Ravi, R. Brahma, S. K. Srivastava
Summary: The Co/Ni multilayers thin films prepared under different conditions show varying levels of perpendicular magnetic anisotropy (PMA). Films with Cu underlayer, in-situ annealing, and in-situ combined with post-annealing exhibit enhanced effective PMA constant values, leading to improved magnetic properties. The magnetization reversal in these films is achieved by domain wall propagation.
Article
Materials Science, Multidisciplinary
N. Zhang, K. K. Wen, T. T. Yang, P. Jia, X. C. Cai, C. C. Du, J. K. Yu, B. R. Sun, T. D. Shen
Summary: Researchers synthesized nanocrystalline nickel (ferrous) alloys by electrodeposition and studied the evolution of their microstructure and microhardness through annealing. The experimental results indicate that the microhardness of the annealed alloys is not only dependent on grain size, but also on the grain boundary status.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Environmental
Mengmeng Sun, Mingxia He, Shaojuan Jiang, Yanying Wang, Xianxiang Wang, Tao Liu, Chang Song, Suning Wang, Hanbing Rao, Zhiwei Lu
Summary: This study synthesized a bimetallic organogel with three layers structure, showing excellent multi-enzyme activities. Various detection platforms were constructed based on different nanozyme activities, providing a multifunctional detection platform for evaluating citric acid, norfloxacin, and gallic acid.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Dongchao Yang, Lizhi Yi, Shuaiwei Fan, Xiaogang He, Yunli Xu, Min Liu, Linjie Ding, Liqing Pan, John Q. Xiao
Summary: The challenge in quantitatively determining the spin Seebeck effect in ferromagnetic metals lies in the presence of various other thermoelectric signals, including the anomalous Nernst effect, magnetic proximity-induced ANE, and inverse spin Hall effect. By comparing different material layers and conducting model-assisted analyses, the pure spin Seebeck signals and coefficients of various ferromagnetic metals can be accurately determined. Understanding the properties of spin-related effects in ferromagnetic metals is crucial, and experimental measurements combined with theoretical calculations offer valuable insights into these phenomena.
MATERIALS RESEARCH BULLETIN
(2021)
