Article
Chemistry, Physical
Debabrata Das, Yohannes Getahun, Francelia Sanchez Escobar, Rebecca Romero, Ahmed A. El-Gendy, C. V. Ramana
Summary: The evolution of superparamagnetic behavior of Nb-Cr-Ta-V-W refractory high entropy alloy (RHEA) nanoparticles synthesized by mechanical pulverization technique was investigated. The results showed that the size of the nanoparticles decreased with milling time, while retaining the parent crystal structure and phase. The RHEA nanoparticles exhibited a temperature independent superparamagnetic nature.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Review
Chemistry, Inorganic & Nuclear
Jamshid Rakhtshah
Summary: In the past decade, the synthesis of transition-metal Schiff-base complexes immobilized on Fe3O4 nanoparticles has attracted great interest. This review focuses on the key syntheses and catalytic potentials of magnetically recoverable nanocatalysts published from 2012 until now. The catalytic potential of these magnetic nanocatalysts has been tested in various processes, including alkenes epoxidation, sulfides oxidation, alcohols oxidation, aromatic alkyls oxidation, cross-coupling reactions, C-O coupling reaction, multicomponent reactions, trimethylsilylation of alcohols and phenols, alcoholysis of epoxides, reduction of nitrobenzenes, N-arylation of nitrogen heterocycles with aryl halides, and N-alkylation of amines. This review compares the use of heterogenized transition metal complexes with various imine bond bearing ligands in the catalytic processes. The advantages of this catalytic methodology include the easy separation of catalysts using an external magnet, simple recycling of catalysts without significant losses in performance, improved efficiency due to the nanoscale architecture of active centers, and better steric control of reaction intermediates.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Maria Pugaczowa-Michalska, Zbigniew Sniadecki
Summary: In this study, new Zr(2)CoZ systems were energetically validated in the common cubic crystal structures of Heusler alloys, with the regular Heusler structure being more favorable than the inverse Heusler structure. The values of elastic constants for the studied Zr(2)CoZ Heusler alloys in the L2(1) structure fulfill the conditions of Born stability for cubic crystals, while electronic structure calculations show metallic ferromagnetic properties with Co magnetic moments playing a key role.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Multidisciplinary Sciences
Xiaoxiong Ren, Junsheng Huang, Ping Li, Yun Zhang, Zhi-Xin Guo
Summary: The recent discovery of 2D magnetic materials has opened new avenues for research on low-dimensional magnetism and potential applications in spintronics. A strategy of depositing TM atoms on graphyne to obtain monolayer TM magnets has been proposed, with various physical properties and potential applications in magnetic tunnel junction devices. These results provide a new framework for obtaining 2D magnets with outstanding spintronic properties.
ADVANCED THEORY AND SIMULATIONS
(2022)
Article
Materials Science, Ceramics
Cezhi Du, Gaofeng Zhang, Hongjian Wang
Summary: The surface quality and residual stress of Al2O3 and ZrO2 ceramics were improved using pre-compressive stress grinding, with ZrO2 exhibiting lower surface roughness. The residual compressive stress was found to be higher at a grinding depth of 30 µm for both ceramics under the same grinding parameters.
CERAMICS INTERNATIONAL
(2021)
Review
Chemistry, Multidisciplinary
Lianhui Wu, Zhixi Guan, Daying Guo, Lin Yang, Xi'an Chen, Shun Wang
Summary: The surface reconstruction of the precatalyst during the oxygen evolution reaction (OER) process plays a crucial role in its catalytic performance. Understanding the relationship between the degree of reconstruction and catalytic activity is essential for the rational design of high-performance OER electrocatalysts.
Article
Multidisciplinary Sciences
Xiangyuan Zhang, Lin Yang, Minli Zheng, Jialiang Liu, Mingjia Zhou, Fukang Gong
Summary: This paper presents a new approach to predict the microhardness of two-phase in S32760 duplex stainless steel based on the flow stresses in the austenitic and ferrite. The model's accuracy was validated with experiments, and the study provides insights into the impact of strain, strain rate, and temperature on the microhardness of the two-phase, contributing to the theoretical foundation of processing techniques in duplex stainless steel.
SCIENTIFIC REPORTS
(2023)
Review
Chemistry, Inorganic & Nuclear
Kira I. Pashanova, Andrey I. Poddel'sky, Alexandr V. Piskunov
Summary: This review focuses on the coordination compounds of late transition metals based on sterically hindered functionalized o-iminobenzoquinone type ligands. It discusses the relationship between structural modifications and magnetic behavior, as well as the effect of molecular structure transformations on the oxidation state, spin state multiplicity, and redox state of the metal center and organic ligands.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Inorganic & Nuclear
Elizabeth M. Bolitho, Hannah E. Bridgewater, Russell J. Needham, James P. C. Coverdale, Paul D. Quinn, Carlos Sanchez-Cano, Peter J. Sadler
Summary: By studying the accumulation and localization of metal and ligands in cancer cells treated with potent anticancer complexes, it is found that iodido complexes are rapidly activated in cancer cells and the bond between osmium and the chelated ligand appears to remain stable in cells for about 24 hours, although some release of the ligand is observed. These complexes seem to degrade more rapidly in normal human cells, possibly providing a mechanism for selective cytotoxicity towards cancer cells.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Materials Science, Multidisciplinary
Mehmet Sakir Ece
Summary: New magnetic nanomaterials Fe3O4@SiO2@L-Pro-X (X = Co, Mn, Cu, Ni) were successfully synthesized using green chemistry and sustainable materials approaches. These materials exhibit magnetic property, superparamagnetic character, mesopore character, suitable surface area, visible-light active character, crystalline cubic spinel form, and thermal/mechanical stability.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wei Zhang, Ning Han, Jiangshui Luo, Xu Han, Shihui Feng, Wei Guo, Sijie Xie, Zhenyu Zhou, Palaniappan Subramanian, Kai Wan, Jordi Arbiol, Chi Zhang, Shaomin Liu, Maowen Xu, Xuan Zhang, Jan Fransaer
Summary: The study explores the critical role of phosphorus in cobalt-based phosphides for water splitting and highlights the differences in performance among different cobalt phosphides in the hydrogen evolution reaction.
Article
Geochemistry & Geophysics
Ruggiero Pesce, Alessandra Accogli, Chrysavgi Kostoula, Juri Ilare, Gabriele Panzeri, Caio Jose Perecin, Luca Magagnin
Summary: A novel adsorbent material based on microaggregates of Fe3O4 magnetic nanoparticles functionalized with succinic acid has been developed for efficient removal of copper and zinc from wastewater. The adsorption process is mainly attributed to electrostatic interactions between metal ions and the negative charges on the surface of magnetic aggregates. Higher succinic acid content in the magnetic aggregates formulation led to increased adsorption capacity, with copper showing higher removal efficiency compared to zinc.
Article
Materials Science, Multidisciplinary
Y. V. Piskunov, A. F. Sadykov, V. V. Ogloblichev, A. G. Smolnikov, A. P. Gerashenko, P. Z. Si
Summary: In this study, Cr-53 NMR measurements were performed to investigate the static and dynamic properties of a half-metallic ferromagnet CrO2. Two magnetically nonequivalent Cr nuclei were observed in the ferromagnetic phase, despite all of the Cr ions being situated on the crystallographic equivalent sites. The temperature dependence of the Cr-53 spin-lattice relaxation rate was measured and it was found that the relaxation of nuclear magnetic moments is influenced by both orbital contribution and three-magnon processes.
Article
Optics
Su Zhou, Yao Cheng, Ju Xu, Hang Lin, Wenjia Liang, Yuansheng Wang
Summary: This work proposes a ratiometric dual-emitting mechanoluminescence (ML) strategy to achieve stress-sensitive ML color variation. The combination of Lanthanide/transition-metal is used to construct the dual-activator ML system. The difference in electronic configuration between Lanthanide and transition-metal ions plays a key role in the response of corresponding luminescence kinetics to stress-induced local crystal field environment changes.
LASER & PHOTONICS REVIEWS
(2022)
Article
Physics, Applied
Benny Boehm, Lorenzo Fallarino, Darius Pohl, Bernd Rellinghaus, Olav Hellwig
Summary: In this work, a concept is presented to stabilize laterally homogeneous vertical AF domain walls by locally varying the perpendicular magnetic anisotropy in Co/Pt-based SAFs. This approach enables the stabilization of the vertical AF domain wall without external magnetic field and allows for deterministic selection of different remanent states within a broad external magnetic field range. Additionally, the concept can be extended to stabilize two coexisting vertical AF domain walls, resulting in a system with a total of six selectable and reprogrammable remanent states.
PHYSICAL REVIEW APPLIED
(2021)
