Article
Chemistry, Physical
Xue Bai, Yong Fan, Changmin Hou, Tianmi Tang, Jingqi Guan
Summary: Cobalt-iron oxyhydroxide demonstrates excellent OER activity with appropriate crystallization, the active sites being di-mu-oxo bridged Fe-Co. Partial crystallization accelerates the OER process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Giovanni Marco Saladino, Carmen Vogt, Bertha Brodin, Kian Shaker, Nuzhet Inci Kilic, Kenth Andersson, Marie Arsenian-Henriksson, Muhammet Sadaka Toprak, Hans Martin Hertz
Summary: In this study, hybrid ruthenium-decorated superparamagnetic iron oxide nanoparticles were designed as contrast agents for both magnetic resonance imaging (MRI) and X-ray fluorescence computed tomography (XFCT). These nanoparticles were synthesized through a one-pot polyol hot injection method. In vivo preclinical studies showed the possibility of correlative bioimaging using these contrast agents. The complementary nature of MRI and XFCT allowed for accurate localization and high specificity and resolution in nanoparticle detection, suggesting potential applications for early tumor diagnosis, improved long-term treatment monitoring, and enhanced radiotherapy planning.
Article
Chemistry, Physical
Anastasiia Kobyliukh, Karolina Olszowska, Marcin Godzierz, Aleksandra Kordyka, Jerzy Kubacki, Yevgen Mamunya, Slawomira Pusz, Ivanka Stoycheva, Urszula Szeluga
Summary: Various facile approaches were used to prepare hybrids of graphene nanoplatelets and graphene oxide with iron oxides nanoparticles. The effects of graphene material and preparation procedures on the hybrids' structural characteristics were studied, and potential applications in various fields were discussed.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Andrey S. Skrypnik, Qingxin Yang, Alexander A. Matvienko, Victor Yu Bychkov, Yuriy P. Tulenin, Henrik Lund, Sergey A. Petrov, Ralph Kraehnert, Aleks Arinchtein, Jana Weiss, Angelika Brueckner, Evgenii Kondratenko
Summary: This study provides fundamental knowledge for developing Fe-based catalysts for CO2 hydrogenation to higher hydrocarbons, with well-defined compositions prepared through controlled decomposition of iron oxalate. The research also elucidates the pathways from CO2 to CO, CH4, and higher hydrocarbons, establishing a correlation between reaction pathways and steady-state composition for tailored catalyst design and preparation. The best performing Fe-based catalyst achieves a selectivity to CH4 below 10%, with a selectivity to C2+-hydrocarbons around 50% at 25% CO2 conversion and 300 degrees C, with an olefin to paraffin ratio of 5.5 among C-2-C-4 hydrocarbons.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Biotechnology & Applied Microbiology
Marta L. DeDiego, Yadileiny Portilla, Neus Daviu, Dario Lopez-Garcia, Laura Villamayor, Vladimir Mulens-Arias, Jesus G. Ovejero, Alvaro Gallo-Cordova, Sabino Veintemillas-Verdaguer, M. Puerto Morales, Domingo F. Barber
Summary: This study analyzed the potential of using iron oxide nanoparticles to treat and prevent SARS-CoV-2 infection. The nanoparticles were found to impair virus replication and transcription, both before and after infection, and SARS-CoV-2 infection was found to affect cellular iron metabolism. These findings suggest that the nanoparticles may be repurposed as prophylactic or therapeutic treatments for SARS-CoV-2 infection.
JOURNAL OF NANOBIOTECHNOLOGY
(2022)
Article
Chemistry, Analytical
Karolina Syrek, Sylwia Kemona, Joanna Czopor, Leszek Zaraska, Grzegorz D. Sulka
Summary: In this study, nanostructured iron oxide was obtained through anodization, and its crystalline phases were identified using XRD analysis. It was found that the material can efficiently absorb visible light.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Enrico Bianchetti, Cristiana Di Valentin
Summary: Through density functional theory calculations, it has been found that using multidentate ligands can inhibit the process of spin-canting in nanoparticles, and the presence of anchoring organic acids can also interfere with structural disorder.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Jayant Yadav, Akshay Vyas, Shrikrishna Sartale, Brajesh Pandey
Summary: Iron oxyhydroxide films were prepared and transformed to iron oxide films by post-deposition annealing treatment. The supercapacitive behavior of the films was studied, showing that the iron oxide films exhibited higher specific capacitance and pseudo-capacitive contribution compared to the oxyhydroxide films.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Ahmed S. M. Ismail, Ivan Garcia-Torregrosa, Jeroen C. Vollenbroek, Laura Folkertsma, Johan G. Bomer, Ties Haarman, Mahnaz Ghiasi, Meike Schellhorn, Maarten Nachtegaal, Mathieu Odijk, Albert van den Berg, Bert M. Weckhuysen, Frank M. F. de Groot
Summary: This study reveals the formation of a FeOOH interfacial layer at the alpha-Fe2O3/NiFeOOH interface, which plays a role in surface passivation and hole accumulation in the oxygen evolution reaction (OER) on hematite, increasing the efficiency of electrocatalysis.
Article
Chemistry, Multidisciplinary
O. M. Lemine, Saja Algessair, Nawal Madkhali, Basma Al-Najar, Kheireddine El-Boubbou
Summary: This study reports the self-heating mechanisms of magnetite nanoparticles (MNPs) prepared by the Ko-precipitation Hydrolytic Basic (KHB) method. The MNPs exhibit favorable heating responses under magnetic excitation, making them promising candidates for magnetically triggered biomedical hyperthermia applications.
Article
Chemistry, Multidisciplinary
X. Xing, C. Wu, G. Yang, T. Tong, Y. Wang, D. Wang, F. C. Robles Hernandez, Z. Ren, Z. Wang, J. Bao
Summary: A unique 2D FeSe2/CoSe nanosheet structure with high activity and stability is synthesized, which exhibits excellent electrocatalytic performance for hydrogen and oxygen evolution reactions.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Phoomipat Jungcharoen, Mathieu Pedrot, Frank Heberling, Khalil Hanna, Fadi Choueikani, Charlotte Catrouillet, Aline Dia, Remi Marsac
Summary: Magnetite nanoparticles are interesting due to their electronic, magnetic and chemical properties. Previous studies have shown that partial oxidation of magnetite nanoparticles can occur, but these transformations were only monitored under oxidizing or acidic conditions. This study found that 10 nm-sized stoichiometric magnetite particles are not stable in aqueous solutions over a biologically and environmentally relevant pH range. A thermodynamic model was developed to predict the chemical stability of these nanoparticles.
ENVIRONMENTAL SCIENCE-NANO
(2022)
Article
Agriculture, Multidisciplinary
Luis Fernando Vieira da Silva, Laercio Santos Silva, Daniel de Bortoli Teixeira, Frederico Luiz Siansi, Ana Beatriz Coelho Franca, Jose Marques Junior
Summary: This study evaluated the spatial variability of magnetic minerals and the potential of mass-specific magnetic susceptibility (chi(lf)) to recognize minimum areas of phosphorus adsorbed (P-ads). The results showed that chi(lf) was able to differentiate soils from their parent material and could be used as a component of pedotransfer functions (PTF) for indirect quantification of P-ads in the soil. Additionally, chi(lf) was more sensitive than X-ray diffraction (XRD) analysis in quantifying ferrimagnetic minerals. The spatial pattern of ferrimagnetic minerals indicated that Mh originated from the direct oxidation of Mt.
PRECISION AGRICULTURE
(2023)
Article
Environmental Sciences
Tonoy K. Das, Achintya N. Bezbaruah
Summary: The study compared graphene oxide supported magnetite (GM) and graphene oxide supported nanoscale zero-valent iron (GNZVI) nanohybrids for arsenic removal and found GNZVI to be more efficient across a wider pH range compared to GM. GNZVI also demonstrated better aqueous dispersibility and higher efficiency for arsenic removal compared to GM.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Huseyin Tombuloglu, Norah Albenayyan, Yassine Slimani, Sultan Akhtar, Guzin Tombuloglu, Munirah Almessiere, Abdulhadi Baykal, Ismail Ercan, Hussein Sabit, Ayyar Manikandan
Summary: This study compared the efficacy and fate of different iron oxide nanoparticles on barley growth, revealing that gamma-Fe2O3 and Fe3O4 nanoparticles significantly improved germination rate, plant biomass, and pigmentation. While they have great potential as nanofertilizers in breeding programs, caution should be taken due to their potential unknown effects on other organisms.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Bibhutibhusan Nayak, S. Narayana Jammalamadaka
Summary: This article presents a method for remote detection of bovine serum albumin (BSA) using modified cantilever beam magnetometry (CBM). By combining a magnetostrictive Fe70Ga30 cantilever with optical detection technique, researchers were able to detect high concentrations of BSA remotely. The results of this study demonstrate the potential of this method in estimating the magnetostriction of thin films.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yu Hao, R. E. Camley, Z. Celinski
Summary: Magnetic particles have various applications and their magnetic state is determined by their size and the strength of an applied magnetic field. Numerical simulations were performed to study the effect of an applied field on the critical size of single-domain magnetic particles, and the critical field at which a particle becomes single-domain was determined.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Nitesh Singh, Naresh Kumar, Dharohar Sahadot, Anil Annadi, Vidyadhar Singh, Murtaza Bohra
Summary: The unique magnetic properties of FM/AFM and hard-FM/soft-FM nanocomposite thin films have significant relevance for numerous applications. The composition and performance of different magnetic phases in the nanocomposite films can be significantly affected by the laser ablation conditions and annealing temperature.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alya Ali Musaed, Samir Salem Al-Bawri, Khaled Aljaloud, Wazie M. Abdulkawi, Mohammad Tariqul Islam, Mandeep Jit Singh, Zaini Sakawi, Husam Hamid Ibrahim
Summary: This research presents a wideband tunable metamaterial for body-centric applications in the millimeter-wave frequency band. The proposed metamaterial has a wide operating frequency range and enhanced gain, making it suitable for improving the antenna performance in 5G wireless communication systems.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Binod K. Rai, Boris Maiorov, Krzysztof Gofryk, Patrick O'Rourke, Catherine Housley, Henry Ajo, Asraf Sawon, Arjun K. Pathak, Narayan Poudel, Qiang Zhang, Travis J. Williams, Matthias Frontzek
Summary: This manuscript reports on the structural and magnetic properties of NdCuGa3. The study confirmed the crystal structure and magnetic phase transition of NdCuGa3 using XRD, neutron diffraction, magnetization, and specific heat measurements. The neutron diffraction data further confirmed the antiferromagnetic phase of NdCuGa3.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Haonan Li, Cong Li, Hailiang Huang, Guodong Hao, Fei Wang
Summary: The electronic structure and ferroelectric-ferromagnetic coupling properties of Y-doped and vacancy-containing GaN-ZnO heterojunctions are systematically investigated. The magnetism in vacancy-containing systems is generated by the spin polarization of unpaired electrons induced by cationic vacancies, while in Y-doped systems, bound magnetic polarons are formed by the orbital hybridization of s-state and d-state electrons of Y-doped elements.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Muhammad Ijaz, Hafeez Ullah, Bandar Ali Al-Asbahi, Mati Ullah Khan, Zaheer Abbas, Sana Ullah Asif
Summary: M-type BaFe11.4-xAlxCo0.6O19 hexaferrites with Al3+ substitutions were synthesized using the co-precipitation method followed by Sonochemical process. The synthesized materials were characterized using XRD, FTIR, UV-vis spectroscopy, VSM, SEM, and LCR meter. The results showed that aluminum doping decreased the band gap and enhanced the magnetic and dielectric properties of the hexaferrites, making them suitable for various applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg I. Utesov
Summary: The elementary excitations spectrum of anisotropic frustrated antiferromagnets in the fan phase is discussed. It is found that the low-energy part of the spectrum consists of a gapless phason branch with linear dispersion and a gapped optical branch corresponding to the fan structure amplitude oscillations. In the high-energy part of the spectrum, the excitations are similar to the magnons of the fully polarized phase.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alexander Ya. Simonovskii, Alexander A. Yanovskii, Arthur R. Zakinyan
Summary: In this study, the departure frequency of vapor bubbles during boiling of ferrofluid in a horizontal magnetic field is experimentally investigated. Two methods, visual and inductive, are used to measure the frequency of bubble departure. The results show that the bubble departure frequency can decrease with increasing magnetic field strength and increase with increasing temperature of the heat-emitting surface. A linear stability analysis is conducted to analyze the influence of the magnetic field on the frequency of bubble formation during ferrofluid boiling.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg Heczko, Michal Rames, Vit Kopecky, Petr Vertat, Michal Varga, Ladislav Straka
Summary: Heusler Ni-Mn-Ga alloys are multiferroic materials that exhibit magnetic shape memory (MSM) phenomena. By doping transition elements into Ni2MnGa alloys, the transformation temperatures can be modified and complex behaviors can be observed, such as the variation in saturation magnetization and the effects of elemental substitution on compound properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Carlos Ariel Samudio Perez, Ariel Flaig de Marchi
Summary: This study investigates the electronic and magnetic properties of the Full-Heusler Fe2MnAs alloy using first-principles calculations. The alloy may form spontaneously and exhibits a ferromagnetic order and high spin-polarization. It can be transformed into a half-metal by contracting the lattice constant. Additionally, certain defects contribute to the spin-polarization of the alloy, making it a fully half-metallic material.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Satish Geeri, Aditya Kolakoti, Prasadarao Bobbili
Summary: In this study, an electromagnetic wave-absorbing material was fabricated using a polymer composite material with fiber orientation and Multiwall Carbon Nanotubes as filler materials, along with a Perfect Electric Conducting material. The experiments demonstrated strong electromagnetic absorbing properties for the composites with PEC-coated and non-PEC-coated materials. Mechanical, thermal, and morphological analysis confirmed the similar trend in properties. CRITIC analysis helped identify the sequence order of sustaining properties for the fabricated composites.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yankai Chen, Ruoxue Zhang, Yukai An
Summary: The piezoelectricity, valley character, and magnetic properties of 2H-VS2 monolayer were studied, revealing its potential applications in spintronics and valleytronics due to its bipolar magnetic semiconductor characteristics and superior physical properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Leonardo S. Lima
Summary: This study investigates the thermodynamic quantities, such as entropy, specific heat, and magnetic susceptibility, in the next-nearest-neighbors Heisenberg model on a honeycomb-kagome lattice. The linear spin-wave approach is applied to obtain the temperature-dependent behavior of these quantities. Additionally, the entanglement negativity, a quantifier of quantum entanglement, and the spin Hall conductivity are also studied. The results show that all the thermodynamic quantities, as well as the entanglement negativity and spin Hall conductivity, exhibit an increasing trend with temperature. Furthermore, it is found that all the analyzed quantities approach zero in the low-temperature limit, consistent with experimental observations.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Zhaoxing Wang, Maximilian Kai Reimann, Wang Chen, Yikun Zhang, Rainer Poettgen
Summary: The Mo2FeB2-type compounds RE2Ga2Mg (RE = Tm, Er, Ho) exhibit a large magnetocaloric effect, making them promising for cryogenic magnetic cooling applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)