Articles tagged with Metal Oxides
A team of researchers at Hokkaido University has developed a barium cobalt oxide thermoelectric converter that is reproducibly stable and efficient at temperatures as high as 600°C. This breakthrough material shows promise for wide deployment in high-temperature thermoelectric conversion devices.
Scientists have created new photoelectrode materials with improved performance by rapidly heating metal-oxide thin films to high temperatures without damaging the underlying glass substrate. This breakthrough increases the efficiency of solar water splitting and has potential applications for producing 'green' hydrogen and quantum dots.
Aston University researchers have developed a technique to boost antimicrobial properties of bioactive glass, which could reduce infections and antibiotic prescriptions. The new approach combines metal oxides, significantly improving bacterial kill rates over single oxides alone.
Researchers developed a new method to significantly enhance thermoelectric voltage at low temperatures by creating laminate structures with transition metal oxide and insulating layers. The 'phonon-drag effect' is responsible for the enhancement, where flowing phonons drive electrons to produce extra thermoelectric voltage.
The new method uses ink-jet printers and hyperspectral imaging to create hundreds of thousands of material combinations in a single trial run. A cobalt-tantalum-tin compound was discovered that exhibits tunable transparency and acts as a good catalyst for chemical reactions.
Researchers at GIST develop a non-contact, nondestructive approach to characterize crystal structures in thin films, shedding light on surface symmetries in SrRuO3. The technique offers a platform for structural characterization of surfaces and interfaces using optical techniques.
A new thumb-sized device can diagnose bad breath by sniffing out hydrogen sulfide gas in exhalations, correctly identifying it 86% of the time. The device combines a metal oxide gas sensor with humidity, temperature and pressure sensors.
Research on haematite, a widely known rust material, has been hindered by low photocurrent conversion efficiency compared to theoretical maximum values. A recent study reveals that the wavelength of absorbed light in hematite thin films affects its photoelectrochemical properties.
Researchers have developed a new material, alpha-SnWO4, that could convert up to 20% of sunlight into chemical energy for hydrogen production. Thin layers of nickel oxide were found to reduce the photovoltage and degrade the material, but alternative deposition processes may improve performance.
An interdisciplinary collaboration has updated the small polaron hopping model to reflect different pathways for conduction in ceramics, enabling researchers to customize metal oxide properties. The new model reveals large energetic barriers associated with switching conduction paths between cations.
A team of researchers, led by the University of Texas at Austin, has cracked the code of a scientific anomaly that enables ultra-fast battery energy storage systems. They found metal compounds with up to three times the energy storage capability compared to common materials.
An international team of researchers has observed how electronic charge excitation changes electron spin in metal oxides in an ultrafast and inphase manner. This breakthrough could lead to the development of new ultra-fast storage systems and information technologies.
Researchers at TU Wien develop a method to study metal oxide surfaces using a single oxygen atom attached to an atomic force microscope tip, allowing for gentle examination of surface structures without altering the atoms. The technique reveals different ways oxygen molecules attach to titanium atoms on the surface.
Researchers created a platinum-titania catalyst that selectively breaks carbon-oxygen bonds in plant derivatives, producing biofuels. The strategy could be applied to design stable and active catalysts for industrial chemical production from biomass-derived molecules.
Researchers at NC State University have developed a new technique for shielding electronics from ionizing radiation, using oxidized metal powder - rust. The approach reduces weight and improves shielding, with potential applications in space exploration technology and aerospace devices.
Researchers at KAUST have developed a hybrid organic transistor for use in electronic displays and large-area electronics, overcoming production challenges of metal oxide TFTs.
Researchers have developed a new multilayered complex that displays high-performance near-infrared electrochromism. The complex, prepared by layer-by-layer coordination assembly on metal oxide substrates, exhibits two reversible redox waves and excellent electrochromic performance with a contrast ratio of up to 56% at 1150 nm.
Scientists at Kanazawa University successfully controlled magnetic anisotropy through electric polarization, enabling nonvolatile memory. The researchers applied electricity to a zinc oxide layer, affecting the cobalt-platinum alloy below.
Scientists create a metal oxide@MOF composite with enhanced durability and capacitance, showing promise for electrochemical capacitor energy storage devices. The composite exhibits high cycling stability, specific capacitance, and energy density.
The National Science Foundation awards $354,954 to Dr. Giannis Mpourmpakis' research on dehydrogenation of alkanes on metal oxides. This breakthrough could enable more efficient and cost-effective chemical production using abundant natural gas reserves.
Researchers create a surface acidity- and selectivity-tunable manganese oxide catalyst using enolic acetylacetones. The stable modification of acetylacetones influences the redox-acid cooperative catalysis of MnOx, enabling control over oxidation selectivities.
Scientists have developed a new material for ultraviolet photodetectors that can detect UV radiation at speeds 100 times faster than existing devices. The new stretchable film uses a unique interlaced-nanowire structure to achieve high response speed and electrical stability.
Researchers at Oregon State University have discovered that metal oxide catalysts can predict reactivity with easy-to-determine properties, enabling more efficient processes across various industries. The findings open up new pathways for rational catalyst design and pollution abatement.
A team of scientists has developed a new method for synthesizing nanographenes on non-metallic surfaces, including metal oxide surfaces. This innovation enables the creation of electronic nanocircuits that could replace existing microelectronics.
Scientists have created a novel gas sensor based on vertically aligned WO3-CuO core-shell nanorod arrays, achieving ultrasensitivity to ammonia (NH3) gas. The hybrid sensor exhibits high gas response and short recovery times, making it suitable for detecting toxic gases.
Researchers from Northeastern University developed hierarchical Bi2MoO6 nanosheet arrays (BNAs) on 3D Ni foam, which exhibit a super high reversible discharge capacity of 2311.7 μAh/cm² and excellent cycle stability. The BNAs-integrated electrodes improve the cycle stability and capacity of lithium-ion batteries.
A team of researchers found that an ultrathin layer of aluminum oxide can flow like a liquid, filling cracks and gaps as they form. This discovery could provide a protective barrier to prevent further oxidation and corrosion in metals, particularly in applications such as fuel-cell cars and nuclear power plants.
Researchers have developed a method to create linked networks of metal oxides that can improve their ability to catalyze chemical reactions or harvest energy from light. This new material has potential applications in various fields, including catalysis and electronics.
Israel E. Wachs, Lehigh University professor, has been awarded a Fulbright Senior Scholar Fellowship to research energy-related topics with Gideon Grader and Oz Gazit at Technion-Israel Institute of Technology. This fellowship aims to increase mutual understanding between the U.S. and Israel through academic exchange.
Researchers at MIT discovered that imperfections in metal oxide materials can alter their properties, enabling new types of low-energy computer memory and processing devices. The findings provide a theoretical framework to understand the effects of defects on material stability and structure under strong electric fields.
Researchers found that a heat treatment under hydrogen doubles the life span of charge carriers in metal oxide photoelectrodes, leading to improved photocurrent under sunlight. This breakthrough could potentially reduce costs and increase stability for commercialization.
A new system of oxide materials can be used to create actuators that function at temperatures above 500 degrees Celsius, enabling devices to open and close valves in hot environments. This technology could revolutionize maintenance tasks in nuclear plants and other high-temperature settings.
The OU professor's research will integrate with educational and outreach programs for American Indian students, emphasizing the importance of sustainable energy. The study aims to quantify the role of catalytically active sites in biomass conversion processes.
Scientists at Argonne National Laboratory have invented a new foam called Oleo Sponge that can absorb and reuse oil from water. The material has been shown to collect diesel and crude oil from both below and on the surface of the water.
Researchers have developed an electrografting approach to improve PEDOT adhesion, enabling longer lifespan and better performance of biomedical devices. The breakthrough enhances communication between devices and neural tissue, paving the way for more effective health interventions.
Researchers at Oregon State University have isolated metal-oxide clusters in water, allowing for precise control over atomic growth. This breakthrough enables the creation of high-performance materials for energy applications.
Researchers have developed a method for creating crumpled metal-oxide films using graphene templates, resulting in enhanced properties such as higher charge-carrying capacity and increased reactivity. This process allows for the introduction of wrinkle patterns on metal oxides, overcoming previous limitations.
Researchers have developed sensors based on binary metal oxide nanocomposites that can detect gas leaks, including those potentially linked to terrorist attacks. The sensors utilize chemisorption centers to facilitate gas molecule adsorption, enabling fast response times.
Researchers at Lawrence Livermore National Laboratory have discovered that certain metal oxides increase the capacity and cycling performance of lithium-ion batteries. The team created graphene-metal oxide nanocomposites and found two of them greatly improved reversible lithium storage capacity.
Dr. Eranda Nikolla receives $750,000 grant to develop efficient catalysts for oxygen evolution in energy generation and storage
Researchers developed tiny hollow shells to contain Li-S compounds, achieving high-energy storage capacity of 630 mAh/g. The new battery technology could potentially offer up to five times the energy of existing lithium-ion batteries.
A multi-institutional team has resolved a long-unanswered question about how water interacts with metal oxides. The study reveals two dramatically different pictures of water-metal oxide reactions, one forming amorphous networks on smooth surfaces and the other creating structured domains on hydroxylated surfaces.
Researchers have developed a novel method to distinguish between different types of bowel disease using stool samples, with an overall accuracy of 76%. The technique uses volatile organic compounds emitted from the samples to provide a unique profile for each condition, offering a cheaper and quicker alternative to current methods.
The CU-Boulder team has developed a solar-thermal system that splits water into hydrogen and oxygen, paving the way for a sustainable hydrogen economy. The system uses concentrated sunlight to drive chemical reactions, producing hydrogen gas with minimal energy input.
Researchers have developed a highly efficient solar fuel device that can produce hydrogen from sunlight, with a potential to store energy for later use. The device uses a metal oxide photo anode and a cobalt phosphate catalyst to split water into hydrogen and oxygen.
Researchers at Ulsan National Institute of Science and Technology (UNIST) have developed a novel method to synthesize hierarchically nanoporous frameworks of nanocrystalline metal oxides for CO2 adsorption. The material exhibits exceptionally high CO2 adsorption capacity, offering a potential solution to environmental pollution.
A new study by Binghamton University researcher Louis Piper reveals that metal oxides can be tailored to meet specific needs, enabling efficient energy generation and flat screen display technology. By adjusting the band gap of these materials, researchers can optimize their electronic properties for various applications.
The study reveals that metal oxides interact with water in metastable states, rather than sequential transitional forms. This finding has implications for understanding corrosion and developing sustainable technologies like batteries and hydrogen fuel.
Researchers have developed nano-sized sensors that detect harmful pollutants at lower concentrations and with greater reliability than traditional commercial gas sensors. The new nanowire sensors operate at room temperature, reducing power consumption and enabling more widespread use.
Researchers at PNNL developed a simple one-step method to create high-capacity lithium manganese phosphate electrodes using paraffin wax and soap. The new process enables the exploration of cheaper alternatives to current lithium-ion-metal oxide batteries, with potential applications in electric vehicles and consumer electronics.
Researchers at NIST discovered a new technique to measure key structural properties of nanoscale metal-oxide films using terahertz spectroscopy. The method allows for the detection of amorphous and crystalline structures in these films, which are crucial for predicting device performance.
Researchers at the University of Southern California have created a new type of supercapacitor that is both transparent and flexible, allowing for potential applications in 'e-paper' displays and conformable products. The device stores an energy density of 1.29 Watt-hour/kilogram, significantly higher than conventional capacitors.
Researchers at Georgia Tech have developed a way to control the dimensions of metal oxide nanotubes with sub-nanometer precision and lengths with precision of a few nanometers. The breakthrough could lead to new applications for inorganic nanotubes and other nanostructures.
Hydrogen atoms can simultaneously bond to four or six other atoms, forming highly stable multicenter bonds that explain electronic conductivity in metal oxides. This discovery has significant implications for technological applications and could enable the use of hydrogen as a substitutional dopant in oxides.
Hochella will analyze samples from acid-mine drainage sites in Germany and the US using advanced equipment to develop better models of metal transport. This work aims to improve understanding of toxic-metal-bearing phases and their distribution in drainage systems.