Articles tagged with Platinum
A team of UNIST researchers has developed a new method to enhance the catalytic activity of provskite, a potential substitute for platinum in metal-air batteries. By physically mixing provskite with polypyrrole, they were able to achieve a synergistic effect that rivals that of platinum.
Researchers directly observed how metallic nanoparticles activate catalytic processes by identifying defect sites on the surface of single particles. These findings validate a longstanding hypothesis and provide insights into controlling catalyst reactivity.
Researchers developed catalysts with tensile surface strain, improving oxygen reduction reaction activity and stability. The nanoplates showed minimal decay in catalytic activity after 50,000 voltage cycles.
Researchers at Stanford University have developed a new technique to fine-tune metal catalysts at the atomic scale, leading to a significant boost in performance for platinum catalysts used in fuel cells. By compressing or separating atoms by just 0.01 nanometers, they found that platinum's catalytic activity nearly doubled.
Researchers have successfully created the first intermetallic double salt with platinum, Cesium Platinide Hydride (4Cs2Pt?CsH), which exhibits a translucent ruby red crystal structure. The compound is highly unstable and can only exist in an inert environment, similar to outer space conditions.
The PLATINUM DIVERSITY trial found that women and minorities had higher rates of death and myocardial infarction after coronary stent procedures compared to white men. The study also highlighted the need for further research into the causes of these observed gradients of risk.
A team of researchers from the University of Houston has reported a more efficient catalyst for producing hydrogen gas by splitting water. The new hybrid catalyst requires significantly less energy than existing methods, making it a promising alternative to traditional platinum-based catalysts.
Researchers used advanced computational methods to demystify complex catalytic chemistry in fuel cells, bringing cost-effective alternatives closer to reality. The study reveals that water plays a huge role in dictating which hydrogen atom breaks free from methanol first.
Hokkaido University researchers have synthesized a platinum-based superconducting material with unique crystal structure, which becomes superconducting at 10 GPa but returns to non-superconductive state at 15 GPa. The high-pressure synthesis method holds promise for further exploration of unknown phases in various materials.
Researchers have found a new, sustainable catalyst for hydrogen production in the form of pentlandite, a mineral composed of iron, nickel, and sulfur. The study shows that artificial pentlandite produces hydrogen more efficiently than naturally occurring variants, with stable performance and a high active surface area.
Researchers at Vienna University of Technology observe how carbon monoxide enables single platinum atoms to move and form clusters, breaking the grip of the magnetite surface. This process has significant implications for chemical catalysis, as it opens up a strategy to turn clusters into single atoms.
Researchers have developed a unique approach to trapping platinum atoms, reducing the need for expensive platinum in chemical reactions. The new method uses cerium oxide to create nano-scale traps that keep platinum atoms stable, improving catalyst efficiency and performance.
Researchers have developed a nickel-carbon-based catalyst that replaces platinum in producing hydrogen from water, offering a cheaper alternative for renewable energy technologies. The new catalyst exhibits highly efficient hydrogen evolution performance and impressive durability.
Researchers have found that bacteria play a crucial role in the dispersion and re-concentration of platinum group elements in surface environments. The study, published in Nature Geoscience, suggests that bacterial processes can reform nuggets of platinum at the surface, shedding new light on the formation of these valuable metals.
Researchers have successfully increased water electrolysis efficiency by applying a copper layer to platinum electrodes. This innovation boosts the reaction's activity and extends electrode lifespan. The breakthrough could lead to large-scale implementation of climate-friendly energy conversion using surplus electricity.
Researchers have developed a precise and fast responding tool to measure carbon monoxide (CO) and nitric oxide (NO) levels in the brain during seizure events. The dual sensor probe recorded clearly defined changes in CO/NO levels that changed in accordance with the seizure's phase changes.
A new study by SISSA/CNR IOM scientists reduces wastage of expensive catalysts used in fuel cells, allowing for more efficient and sustainable energy production. The researchers created nanoparticles on nanosteps, which remain dispersed and stable, enabling the material to be reused with lower costs.
Researchers at TUM and Georgia Institute of Technology found that the size of platinum catalyst particles significantly affects reactivity, with clusters having fewer atoms showing lower activity. The discovery could lead to more efficient production of margarine and other chemicals, as well as new materials.
Researchers have explained why platinum nanoclusters facilitate the hydrogenation reaction used to produce ethane from ethylene. The shape of these small clusters dramatically affects reaction efficiency, contradicting macro-scale observations. The findings may apply to other catalysts and reactions at the nanoscale.
Researchers at Tufts University have discovered a new generation of platinum-copper catalysts that can selectively hydrogenate butadiene, a chemical produced in large quantities. The catalysts require low concentrations of platinum and are more cost-effective than traditional palladium-based catalysts.
A new concept correlates geometric and adsorption properties in catalyst design. Researchers developed a platinum-based catalyst for fuel cell applications, showing up to three and a half times greater catalytic activity than existing ones.
Researchers at Sandia National Laboratories have developed a new, efficient catalyst using molybdenum disulfide that can produce four times the amount of hydrogen as before. The catalyst's action can be triggered by sunlight, making it an off-the-grid means of securing hydrogen fuel.
Researchers have found that platinum nanoparticles sitting on cheap metal oxide materials convert carbon monoxide into carbon dioxide. The chemical reactions occur due to the interplay between platinum particles and the iron-oxide surface, making them efficient. This new knowledge can be used to create better catalysts.
Scientists at the University of Groningen have successfully created an electric circuit using a magnetic insulator and spin waves. By leveraging thermal fluctuations in the material, they were able to transmit electric signals through the insulator, opening up new possibilities for energy-efficient electronic devices.
A team of researchers at the University of Wisconsin-Madison has discovered a highly efficient catalyst that can produce hydrogen using common elements like phosphorus and sulfur. The new catalyst, which is nearly as efficient as platinum, could make a significant impact on the transition to a hydrogen economy.
Researchers have narrowed the date of an anomalous cooling episode known as the Younger Dryas, which occurred around 12,800 years ago, to a 100-year range. The study suggests that a cosmic impact triggered this event.
Researchers have developed a new fabrication technique to produce ultra-thin hollow nanocages with platinum walls, which can increase the utilization efficiency of the metal by up to seven times. The new structures can use smaller amounts of platinum, making fuel cells more economically viable.
Researchers at University of Wisconsin-Madison have developed a new approach to structuring catalysts, using nano cage structures to achieve more potent chemical reactions with less material. The discovery offers a pathway for industries to wean themselves off platinum, a scarce and expensive metal.
Researchers at the University of Wisconsin-Madison have introduced a new approach to molecular fuel cell catalysts, which uses nitroxyls and nitrogen oxides for more efficient energy storage. The catalyst achieves comparable efficiency to platinum while offering advantages in terms of modifiability.
Researchers at Oxford University have developed a scalable technique to produce millimetre-sized graphene crystals in minutes, compared to hours using current methods. The new approach creates a liquid layer that smooths out nanoscale valleys, allowing for larger flakes of high-quality graphene.
Researchers have developed a novel photoelectrode that solves the problems of inefficient hydrogen generation in acidic electrolytes. The new composite presents high photovoltage and photocurrent densities, as well as chemical protection against corrosion.
Rutgers University chemists have developed a patent-pending HER catalyst Ni5P4 that has the potential to replace platinum in electrolyzers and fuel cells, lowering material costs while maintaining efficiency. The researchers aim to test the compound's operating stability and efficiency over extended time periods in commercial devices.
Researchers have developed a new device that significantly improves healing of small ruptured brain aneurysms. The HydroCoil device combines a gel-like substance with a platinum coil, allowing it to expand and block blood flow to the aneurysm, reducing recurrence rates by up to 70% compared to standard treatment.
Researchers have discovered that hydrogen binding energy is the most important factor predicting the rate of the fuel-cell reaction, enabling the design of new catalyst materials. Alkaline polymers are being explored as a potential solution to create less expensive electrocatalysts that work well in an alkaline environment.
Researchers at Empa successfully synthesized structurally homogenous single-wall carbon nanotubes (SWCNTs) by using molecular 'seeds' that were transformed into three-dimensional objects and grown on a platinum surface. The resulting SWCNTs have mirror-image symmetry and reach lengths in excess of 300 nanometres.
Researchers have developed a novel catalyst that efficiently catalyzes the production of clean-burning hydrogen fuel, outperforming cost-prohibitive platinum and other less-expensive alternatives. The technology, based on carbon nanotubes, could make electrolysis reactions commercially viable using renewable energy sources.
The National Renewable Energy Laboratory (NREL) has developed office and laboratory spaces that demonstrate high-performance, sustainable building designs and constructions. The campus features facilities with best-in-class energy efficiency and sustainability practices.
Myriad Genetics Inc. presented new data on its BRACAnalysis CDx and HRD tests, supporting their clinical efficacy in predicting platinum-based therapy response for triple negative breast cancer patients. The company also announced an early access launch of the HRD test in FY15.
Researchers at NREL are examining the best ways to create hydrogen via electrolysis using wind and solar power, aiming to reduce greenhouse gas emissions. The lab is also exploring strategies to lower the cost of fuel cells by decreasing platinum usage, which could make hydrogen fuel cell vehicles more viable for widespread adoption.
Researchers at Berkeley and Argonne National Labs developed a new class of bimetallic nanocatalysts, hollow polyhedral nanoframes of platinum and nickel, which feature a three-dimensional catalytic surface activity. These catalysts are significantly more efficient and far less expensive than the best platinum catalysts used in today's ...
Duke University researchers used computational methods to identify dozens of new platinum-group alloys that could prove beneficial in applications such as catalytic conversion, corrosion-resistance, and fuel cells. The study provides detailed structural data on known materials and identifies potential targets for further research.
Researchers from KIT have successfully stabilized a single atom's magnetic spin for ten minutes, opening up possibilities for compact computer memories and quantum computers. By suppressing surrounding interactions at low temperatures, they achieved a stability period of about a billion times longer than comparable atomic systems.
Researchers at Doshisha University have discovered a new mechanism to propel micromotors, which can move forward, spin, or circle depending on their shape. The discovery could lead to the creation of easily controllable machines with a versatile range of motions.
Scientists at Brookhaven National Laboratory have created a high-performing nanocatalyst that transforms impure hydrogen into electricity, addressing challenges of carbon monoxide poisoning. The novel core-shell structure, combining ruthenium and platinum, exhibits perfect atomic ordering and superior performance parameters.
Researchers at the University of Utah have created a polymer that emits light in multiple colors, including blue and red, and can be tuned to cover the entire visible spectrum. This breakthrough holds promise for more efficient and less expensive white organic LEDs, which could replace traditional light bulbs.
Research on Chelyabinsk meteorite fragments reveals evidence of intensive melting process, likely caused by a collision or proximity to the Sun. The dark fragments contain spherical 'bubbles' and platinum group elements, which are unusual for their formation time period.
Researchers at Michigan Technological University have developed a new material, 3D graphene, that can replace the expensive metal platinum in dye-sensitized solar cells. The new material shows high conductivity and catalytic activity, converting nearly 8% of sunlight into electricity.
Researchers at the University of Copenhagen have developed a new fuel cell design that produces as much electricity as current models but requires significantly less platinum, a rare and valuable precious metal. The discovery, published in Nature Materials, could lead to more economically viable fuel cell production.
Researchers are working to replace expensive platinum catalysts with non-precious materials, reducing the cost of fuel cells and making them more viable for mass production. The goal is to eliminate platinum completely, which would significantly reduce greenhouse gas emissions and dependence on oil.
Researchers develop a platinum-nickel nano-octahedra material that accelerates hydrogen and oxygen conversion to water, saving 90% of typical platinum usage. The unique atomic structure enhances reactivity while limiting lifetime.
Researchers have discovered an inexpensive and easily produced metal-free catalyst that performs better than platinum in oxygen-reduction reactions. The catalyst is more stable and tolerant of carbon monoxide poisoning and methanol crossover.
University of Illinois researchers created a novel approach to produce highly uniform Pt icosahedral nanocrystals using the hot injection-assisted GRAILS method. The synthesis results in high-purity products with ideal models for studying structure-property relationships.
Researchers at Brookhaven National Laboratory have developed a low-cost, stable, and effective catalyst that can produce hydrogen in an environmentally friendly manner. The catalyst, made from renewable soybeans and abundant molybdenum metal, has the potential to increase the use of clean energy sources.
Researchers have identified the molecular mechanisms behind two rare diseases: giant axonal neuropathy and ovarian cancer. In GAN, mutations in gigaxonin disrupt neural protein degradation, leading to neurofilament accumulation. Meanwhile, ATP11B facilitates cisplatin resistance in ovarian cancer cells by mediating platinum export.
Controlling the shape of nanometer-sized catalytic particles is crucial for optimizing their activity and selectivity in applications such as catalytic converters, fuel cells, and chemical catalysis. Surface diffusion plays a key role in defining these shapes. The research found that varying temperature and deposition rate can control ...
Researchers have developed a new imaging methodology that produces 3-D images of nanoparticles at atomic resolution, revealing new details of defects. This method enables the visualization of atoms from different angles and their arrangement in three dimensions.
Researchers at the University of Cambridge have developed a new type of microchip that allows information to travel in three dimensions. The innovation uses spintronic technology and enables additional storage capacity on chips by spreading data across multiple layers.
Researchers at Newcastle University used X-ray Photoelectron Spectroscopy (XPS) to analyze the build-up of hydrocarbons on replica kilograms, finding that a suntan could help remove contamination and bring prototype weights back to their ideal mass. The study highlights the significance of maintaining precise measurements in internatio...
NIST scientists discovered a simple and fast process to deposit uniform, ultrathin layers of platinum atoms on a surface. By increasing the voltage beyond normal levels, they created a hydrogen layer that quenches further metal deposition, allowing for precise control over film thickness.
A consortium of researchers has developed a technology that uses common classes of flower to restore poisoned soils while producing nano-sized platinum and arsenic nanoparticles. The process can also be used to recover high-value materials such as fine chemicals, pharmaceuticals, and anti-oxidants.