Articles tagged with Oxides
Francisco Rivadulla, a researcher at the Center for Research in Biological Chemistry and Molecular Materials (CiQUS), has been awarded the Antonio Casares Rodríguez Medal for his groundbreaking work in solid-state chemistry and condensed-matter physics. The recognition highlights the centre's contribution to advancing chemistry and tra...
Researchers at NIMS experimentally ascertained friction independent of sliding velocity at high temperature, clarifying the basic principle of friction. The discovery is expected to lead to the design and development of energy-saving lubricants.
Researchers have discovered a new material, LLNOF, with a record-high conductivity of seven millisiemens per centimeter, comparable to liquid electrolytes. The material's high conductivity is due to a dynamic interplay among four atomic sites that form a tetrahedron around the fluoride ion.
Researchers developed a thickness-gradient electrolyte to homogenize current distribution in solid oxide fuel cells, reducing current density deviation by up to 80% and improving durability. The electrolyte's layered structure boosts electrochemical reaction rates while suppressing excessive local current.
Researchers at IISc have demonstrated a new way of switching materials between two fundamentally different magnetic states using an electric current. This discovery could pave the way for compact, energy-efficient electronic devices that store information and perform logic operations, with potential applications in quantum computing.
Researchers develop a new strategy to control electronic and magnetic properties of oxide thin films through nanoparticle exsolution, resulting in giant insulator-to-metal transition and room-temperature superparamagnetism
Scientists have discovered key structural units—BO, BO₃, and B₂O₅—in neutral boron oxide clusters that are essential building blocks of the two-dimensional vitreous network. These findings provide important insights into the microstructure and growth mechanisms of vitreous materials.
Researchers developed a strategy to overcome lattice-mismatch limitations in Ga2O3 heteroepitaxy by inserting a precisely engineered gallium oxynitride layer with a close atomic structure match. High-quality β-Ga₂O₃ films were grown, demonstrating outstanding performance metrics for ultraviolet photodetectors.
Researchers at Tohoku University's Advanced Institute for Materials Research developed an unprecedented method to bond lithium metal directly to garnet-type oxide electrolyte using ultrasonic welding. This technique reduces interfacial resistance and establishes direct solid-state contact without melting or thermal activation.
Researchers have confirmed the existence of a long-theorized molecule in oxidation, which has implications for atmospheric chemistry, biochemistry, and medicine. The discovery was made using a unique mass-spectrometric technique and has significant implications for understanding reaction steps and products in oxidation processes.
Researchers developed a novel proton exchange strategy to enhance manganese-based oxide performance, offering a promising path toward affordable, platinum-free electrocatalysts. The modified catalyst demonstrated superior stability and durability, with improved half-wave potential and retention of current.
Researchers have discovered that twisting and stacking oxide crystals can create specific atomic configurations that act as an 'invisible fence' to trap or repel electrons. The study reveals charge disproportionation due to subtle distortions in oxygen octahedra, leading to altered electron accumulation patterns.
Scientists used a valence engineering strategy to modify NaNi <sub> 1/3 </sub> Fe <sub> 1/3 </sub> Mn <sub> 1/3 </sub> O <sub> 2</sub> material, resulting in batteries that last longer and work well in wide temperature ranges
Researchers created a metric to quantify lattice flexibility and studied how it impacts proton transport. They ranked the importance of seven features, including hydrogen bond length and oxygen sublattice flexibility, finding that these are critical for efficient proton conduction.
University of Rochester researchers developed algorithms to analyze complex chemistry in propane-to-propylene conversion. The study reveals the importance of defective metal sites and oxide phase stability in catalysts.
Researchers have developed a solid-acid NiCo2O4 electrocatalyst with balanced Brønsted and Lewis acid sites for efficient electrooxidation of biomass-derived saturated alcohols. The work offers a new strategy for designing high-performance, non-noble metal catalysts for biomass valorization.
Recent advances in high-entropy oxide (HEO) memristors for neuromorphic computing have shown unique structural and electronic tunability. HEOs contain multiple cations in near-equimolar ratios, forming highly disordered yet stable lattices that resist phase segregation.
Researchers at ISTA have discovered a way to tune singlet oxygen, a highly reactive ROS that causes cell damage and degrades batteries. By controlling the pH inside mitochondria, they can produce more 'good' triplet oxygen and reduce the production of 'bad' singlet oxygen.
Researchers at the University of Minnesota have developed a new method for producing iron that eliminates CO2 emissions and can be performed at room temperature. The process uses hydrogen gas plasma to strip oxygen from iron ore, producing pure iron and water vapor.
A novel metasurface design using vanadium dioxide enables fast, energy-efficient modulation of terahertz waves. This allows for real-time holographic encryption and decoding, with applications in secure communication, medical imaging, and more.
Researchers developed an electrically tunable metasurface for THz holographic devices, leveraging VO2's reversible transition to minimize energy consumption and response time. The microladder design enables real-time operation, fast switching times, and robust performance.
Researchers from Okayama University have identified a novel eukaryotic protein called radular teeth matrix protein 1 (RTMP1) that plays a crucial role in regulating iron oxide deposition in chiton teeth. The study reveals that RTMP1 helps concentrate iron ions on the chitin fibers, making them ultrahard and durable.
Researchers at Nagoya University have developed a new method to create gallium oxide semiconductors with stable p-type layers, allowing for twice the current capacity of previous devices. This breakthrough enables improved energy efficiency, reduced waste, and lower operating costs for electronics.
A new study published in Nature highlights the differences between hydrogen and carbon monoxide as reductants in oxide reduction, offering insights for more efficient and sustainable metal extraction. Hydrogen is found to facilitate faster and cleaner reaction kinetics, generating benign water vapor as a byproduct.
New research claims adding lime to agricultural soils can remove CO2 from the atmosphere, rather than cause emissions. The study, based on over 100 years of data, shows that the addition of acidity is the main driver for CO2 emissions from soils.
Researchers at Pohang University of Science & Technology have developed a novel iron-based catalyst that more than doubles the conversion efficiency of thermochemical green hydrogen production. The new catalyst, iron-poor nickel ferrite (Fe-poor NiFe2O4), enables significantly greater oxygen capacity even at lower temperatures.
Researchers have developed a novel oxide material that exhibits autonomous spin orientation control in response to magnetic fields, allowing for the detection of both field direction and strength. The 'semi-self-controlled' spinning enables advanced angle-resolved spintronic devices with strong potential for next-generation technologies.
A new study reveals China's NTEs were significant sources of CH₄ and N₂O emissions between 1980 and 2020, with an accumulated GWP of 5.55 Pg CO₂-equivalent. The net warming effect is primarily driven by N₂O emissions.
Researchers at Virginia Tech have discovered a new solid lubricating mechanism that can reduce friction in machinery at extremely high temperatures. The novel coating has the potential to make components from rockets to semiconductors more safe, durable, and cost-effective.
Scientists have created a stable 2D material, InSbMoO6 (ISM), using lone pair electrons as chemical scissors. ISM exhibits strong nonlinear optical responses and good air stability, making it promising for integrated photonics applications.
A research team at Hokkaido University developed novel cerium oxide-based thermal switches, surpassing prior benchmarks with high efficiency and sustainability. The switches feature a new benchmark for electrochemical thermal switches, offering broad applications in industries such as electronics cooling and renewable energy systems.
Researchers at University at Buffalo have developed a plasma-electrochemical reactor that produces ammonia from nitrogen in the air and water, with no carbon footprint. The process uses renewable electricity and can be scaled up to meet industrial demands.
Researchers tested ODS FeCrAl alloys in a liquid LiPb environment and found that they form durable γ-LiAlO2 layers, which provide strong resistance to corrosion. The study's findings are crucial for improving material durability in fusion reactors and high-temperature energy systems.
Researchers at the University of Minnesota have created a new, transparent conducting oxide material with increased band gap, enabling faster and more efficient devices. This breakthrough supports the development of high-performance electronics for computers, smartphones, and potentially quantum computing.
Researchers found that stored human urine had little impact on soil bacterial communities, increasing nitrifying and denitrifying groups compared to synthetic fertilizers. The study suggests that recycled urine could enhance agricultural sustainability, reduce wastewater pollution, and decrease reliance on synthetic fertilizers.
A new visible-light antenna ligand enhances samarium-catalyzed reactions, reducing Sm usage by up to 98% and enabling mild conditions. The study provides valuable insights for developing efficient Sm-based catalysts.
Researchers at Tohoku University developed a new electrocatalyst by doping cobalt oxide with erbium, achieving high oxygen evolution performance and stability in acidic conditions. The Er-doped Co3O4 catalyst surpassed the performance of many precious metal-free catalysts.
Researchers at Kumamoto University have created a new form of graphene oxide without internal pores, significantly improving hydrogen ion barrier properties. The non-porous film exhibits up to 100,000 times better performance than conventional films, with potential applications in protective coatings and rust prevention.
The researchers used noncontact atomic force microscopy to analyze the surface structure and found that the surface rearranges to allow aluminum atoms to penetrate into the material. This rearrangement reduces energy and stabilizes the structure without changing its composition.
Researchers from Zhejiang University have developed a hybrid laser direct writing technique that enables the creation of functional copper interconnects and carbon-based sensors within a single integrated system. The process allows for real-time temperature monitoring over extended periods, ensuring optimal performance and reliability.
Researchers have developed a cost-effective and easily reproducible point-of-care testing device that can accurately measure cortisol levels in the blood. The device uses iridium oxide nanoparticles to improve stability, sensitivity, and selectivity, allowing for commercial use.
Researchers at Tohoku University developed a novel approach to enhance the efficiency of the oxygen evolution reaction by introducing rare earth single atoms into manganese oxide. This leads to unprecedented improvements in OER performance, making it a suitable alternative to traditional catalysts like ruthenium dioxide.
Researchers at USTC decoupled electrolysis and conversion processes using bromide to improve Faradaic efficiency, selectivity, and stability of propylene oxide production. The system achieved a 91% faradaic efficiency and stable operation for over 30 days.
Researchers discovered a new mechanism by which iron oxide minerals recycle phosphorus from DNA and RNA molecules, transforming them into bioavailable inorganic forms. This finding uncovers a missing piece of Earth's puzzling phosphorus cycle, highlighting the importance of understanding natural phosphorus recycling mechanisms.
A team of researchers led by Professor Beom-Kyeong Park has made a breakthrough in enhancing solid oxide fuel cell efficiency with a rapid PrOx coating method. The study demonstrated significant enhancements in SOFC electrode performance, reducing polarization resistance and boosting peak power density.
Research shows that oil and natural gas development in the Permian Basin contributes to high eight-hour ozone concentrations frequently exceeding EPA health standards during summer months. The study uses data from a 2019 field survey to confirm the impact of drilling, flaring, and other activities on ozone levels.
A new study suggests that using special fertilizers and crushed basalt rocks can reduce agricultural nitrous oxide emissions without harming the ozone layer. The research found a 25% reduction in N2O emissions, aligning with efforts to reach net-zero emissions while supporting increased food production.
Researchers from Tokyo Tech have discovered a material with exceptionally high proton conductivity and thermal stability, paving the way for more durable fuel cells. The new electrolyte enables fast proton diffusion and chemical stability at intermediate temperatures.
Researchers at Pohang University of Science & Technology (POSTECH) made a small change to develop highly efficient SOT materials. By creating an imbalance in the spin-Hall effect, they controlled magnetization switching without magnetic fields, achieving 2-130 times higher efficiency and lower power consumption than known single-layer ...
A multidisciplinary research team has developed a predictive tool for designing complex metal alloys that can withstand extreme temperatures. By analyzing the degradation of high-entropy alloys, the team discovered universal rules that can predict oxidation behavior in these alloys.
Nitrous-oxide emissions have increased by 40% over the past four decades, resulting in accelerating atmospheric accumulation of this potent greenhouse gas. Agricultural production is the largest source of emissions, and improving practices can help reduce nitrous-oxide emissions and water pollution.
Scientists at Okinawa Institute of Science and Technology identify a positive glutamate-NO-glutamate feedback loop that blocks long-term potentiation and impairs learning and memory. The study suggests that this loop may explain memory loss in stroke patients and potentially offer a solution for treatment.
Researchers have discovered a novel transition-metal-free aluminosilicate ferrierite zeolite catalyst that enables direct conversion of methane to methanol. The new process achieves 305 π mol gˑ minǘ methanol production rate with high selectivity, presenting an environmentally friendly solution for converting greenhouse gases into valu...
A German junior research group at the University of Oldenburg is developing precious-metal-free catalysts to convert carbon dioxide into methanol, formaldehyde, and ethylene. The team aims to create inexpensive and durable materials for large-scale industrial applications.
A novel multifunctional catalyst has been developed to convert methane into valuable hydrocarbons, reducing greenhouse gas emissions and energy consumption. The catalyst's spatial distribution of Cu and acid sites determines the final products, with uniform distribution leading to stable and efficient methanol production.
Researchers have found a special spatially varying superconducting state, one-dimensional superconducting stripes, induced by ferromagnetic proximity effect in an oxide heterostructure composed of EuO and KTaO3. The discovery reveals the intricate coupling between superconductivity and magnetism at oxide interfaces.
Satellite-based inversion system shows consistent decline in China's NOx emissions from 2020-2022, largely due to stringent air pollution controls. The industrial and transportation sectors accounted for more than 70% of the total reduction.
Researchers at RIKEN have developed a new catalyst that reduces the amount of iridium required for hydrogen production, achieving 82% efficiency and sustaining production for over 4 months. The breakthrough could revolutionize ecologically friendly hydrogen production and pave the way for a carbon-neutral energy economy.
Researchers at Hokkaido University have developed a cost-effective and high-capacity cathode material for lithium-ion batteries by doping abundantly available elements, such as aluminum and silicon. The addition of these elements forms strong covalent bonds, enhancing the material's cyclability and capacity retention.
Researchers at RIKEN have improved the stability of a green hydrogen production process by using a custom-made catalyst, increasing its lifetime by almost 4,000 times. The breakthrough uses earth-abundant materials, making it more sustainable and potentially cost-effective for widespread industrial use.