Articles tagged with Catalysis
University of Utah chemists developed an algorithm that analyzes previous chemical reaction data to predict hypothetical reactions, narrowing the range of conditions needed for successful synthesis. The model successfully predicted outcomes for various reactions, offering a time-saving solution for pharmaceutical and materials research.
The study uses a novel neutral phosphonium salt catalyst to synthesize optically active oxazolidinones from glycidols and isocyanates, achieving high yields and selectivities. This breakthrough catalyst overcomes the challenges of conventional catalysis methods, paving the way for new drugs against drug-resistant infections.
A new imaging method developed at Cornell University helps remove pollutants from water by identifying optimal catalyst particle sizes and shapes. The technique, called COMPEITS, reveals previously unknown behaviors of catalysts, rendering pollutants nontoxic.
Researchers chemically treat zinc oxide nanowires to apply a uniform coating of titanium dioxide, enhancing catalytic activity and stability for the water-splitting reaction. The resulting nanowire-shell structures exhibit an amorphous structure with crystalline domains limited to a few nanometers.
The Bertarelli Foundation has awarded two grants to researchers at EPFL, focusing on developing smart upper limb prostheses that can provide sensory feedback to patients. Additionally, a non-invasive brain stimulation system is being developed to improve cognitive function in patients with mild cognitive impairment or brain injury.
Researchers at TUM have developed platinum nanoparticles that double the performance of current fuel cells. The particles are about one nanometer big and contain approximately 40 platinum atoms, resulting in high mass activity. This breakthrough could lead to widespread adoption of fuel cells in electric cars.
A team of chemists at the University of Münster has developed a strategy for generating random hits in a systematic way, discovering new reactions and gaining deeper understanding of molecular processes. The study identified three previously unknown reactions, including a photochemical cycloaddition.
Researchers develop an artificial metalloenzyme that protects a metal catalyst, allowing it to target cancer cells while sparing surrounding tissues. The system uses a sugar chain to guide the metalloenzyme to specific cells, delivering a potent anti-cancer compound.
Researchers Xinhe Bao and Omar M. Yaghi received the award for their significant contributions to nanoscience research, including new catalytic materials and reticular chemistry. Their work has led to discoveries in metal-organic frameworks and applications in carbon capture and water harvesting.
Researchers developed a new method to create OER catalysts with rich defects, enhancing their intrinsic activity and promoting mass transfer. This breakthrough provides a new direction for large-scale preparation and application of efficient OER catalysts.
Scientists at Ruhr-University Bochum created underwater plasmas using optical spectroscopy and modelling, producing extreme conditions that briefly surpass the sun's temperature. The resulting plasma breaks down water molecules into their components, releasing oxygen crucial for regenerating catalytic surfaces.
A study from IRB Barcelona describes the reaction mechanism of DNAzymes, which catalyse RNA ligation through a similar mechanism to natural enzymes. The discovery may lead to improvements in current catalysers and the design of novel biocatalysers formed by DNA.
Researchers used DNP-NMR to elucidate the atomic-scale location and distribution of functional groups on MSN surfaces, disproving existing notions of synthetic strategies. This breakthrough provides mechanistic insight for guiding MSN synthesis in a more controlled way.
Scientists at Ruhr-University Bochum have developed nanocatalysts made from cobalt iron oxide that achieve high reaction rates in oxygen generation without the need for binders. The catalysts exhibit exceptional stability under extreme conditions, making them a promising alternative to expensive precious metal catalysts.
Researchers have developed a large interactive stability map of ternary nitrides, predicting 244 new stable compounds. Artificial photosynthesis has also been improved by controlling cobalt oxide catalysts. Additionally, atomically thin semiconductors called TMDCs have shown a quantum yield of 100% when treated with an electrical voltage.
Researchers from the University of Konstanz's CRC 1214 create single-chain, uniform-shape monodisperse nanocrystals with high particle number densities. This breakthrough enables the creation of polymer materials based on nanoparticle assembly.
Gold nanoparticles exhibit unique melting behavior on the nanoscale, forming a liquid shell around a solid core. The research provides new insights into how nanoparticles behave at elevated temperatures, with implications for nanotech applications in medicine, catalysis, and electronics.
Researchers at EPFL have developed a high-efficiency catalyst converting CO2 into carbon monoxide, paving the way for recycling fossil fuels' carbon dioxide to preserve resources and limit greenhouse gas emissions.
Scientists at Tokyo Institute of Technology have created an organic catalyst that can convert carbon dioxide into industrially useful formate products. The catalyst, called tetrabutylammonium formate, achieved 99% selectivity and produced the desired product with a 98% yield.
Researchers at Chinese Academy of Sciences create a chemocatalytic approach to produce cellulosic ethanol, achieving an ethanol yield over 40% in a one-pot process. The new method could overcome limitations on ethanol concentration and show great potential for practical production.
A cobalt-manganese-based nanocatalyst efficiently catalyzes the hydrogenation of carbon dioxide into liquid hydrocarbon fuels. The catalyst enables fuel production at lower temperatures than traditional methods without forming harmful byproducts.
Researchers from ICIQ have found that a magnetic field can directly enhance the production of hydrogen in alkaline water splitting via electrolysis, increasing production by up to twice fold. The low-cost technology has implications for industrial applications and offers a promising solution to the pressing need for sustainable energy.
Scientists at DGIST have created a new photocatalyst that can convert sunlight into hydrocarbon fuels with improved efficiency. The addition of copper and platinum nanoparticles enhances the catalyst's ability to recycle atmospheric carbon dioxide., Researchers aim to further improve the technology to make it commercially viable.
Scientists at Brookhaven National Laboratory and the University of Arkansas developed a highly efficient catalyst for extracting electrical energy from ethanol. The catalyst steers ethanol down an ideal chemical pathway, releasing its full potential of stored energy, enabling applications such as liquid fuel-cell-powered drones.
Researchers have discovered a method to convert plastic waste into jet fuel using activated carbon as a catalyst. The process produces high-quality fuel with minimal environmental impact, offering a promising solution to the global plastic crisis.
The University of Copenhagen has opened a new research center, TiPES, to study climate tipping points and develop improved climate models. The center aims to better understand the mechanisms of sudden and violent changes in the climate system, which could trigger dramatic new climatic changes.
Researchers have discovered the operation of a nanocatalyst at the atomic level, revealing its mechanism in modifying carbon-oxygen bonds. The study demonstrates the potential of developing effective and inexpensive copper-based catalysts for hydrogenation reactions.
Researchers summarize the latest progress in low-temperature methane conversion using thermocatalytic, electrocatalytic, and photocatalytic systems. The study highlights the importance of coupling multiple driving forces to activate methane and introduces catalyst design viewpoints for future technology development.
Researchers at EPFL have successfully synthesized a manganese-hydrogenase by incorporating a manganese complex into an iron-hydrogenase. The resulting semi-synthetic enzyme is active for the native reaction of iron-hydrogenase, marking a significant breakthrough in metalloenzyme design.
Researchers developed a new method to use rare and expensive catalysts sparingly by encasing precious metal salts in micelles. The process efficiently catalyzes oxygen reduction in fuel cells, outperforming traditional methods.
Scientists at the University of Bonn have developed a new method to study enzymes in action, allowing for the measurement of spatial positions and conformational changes. This breakthrough enables better understanding of biomolecules and potential insights into enzyme disorders.
Scientists have created a method to protect graphene and carbon nanotubes (CNTs) from environmental poisoning, preserving their extraordinary properties. The technique uses a protective layer to allow carbon diffusion, enabling controlled growth of these materials.
Researchers at Northwestern University have identified the enzyme responsible for methane-methanol conversion, which catalyzes the reaction at a single copper ion site. This discovery could lead to the development of new, human-made catalysts that convert methane to methanol with high efficiency.
Researchers developed a new class of single-atom nanozymes with intrinsic enzyme-like active sites, overcoming conventional nanozyme drawbacks. The discovery provides a new perspective on catalytic mechanism and rational design of nanozymes.
Researchers at Ruhr-Universität Bochum have discovered a new class of high entropy alloys suitable for electrocatalytic applications. These materials show potential in reducing energy losses and improving activity comparable to platinum catalysts in oxygen reduction reactions.
Scientists at Ruhr-University Bochum created a new approach to observe nanoparticles before, during and after electrochemical reactions. The method allowed them to monitor the structure and composition changes of individual particles throughout their entire lifecycle.
A KAIST research team synthesized a peroxidase-mimicking nanozyme with superior catalytic activity and selectivity, overcoming the limitations of natural enzymes. The nanozymes can accurately detect target materials like hydrogen peroxide and acetylcholine, paving the way for early diagnosis of Alzheimer's disease.
Researchers have developed a new catalyst for oxygen evolution, achieving higher catalytic activity and lower overpotential than traditional methods. The study shows that precise control of dual doping sites can lead to enhanced electrocatalysis.
Researchers at Berkeley Lab have created an all-liquid device that can be reconfigured to carry out complex chemical reactions. The device uses 3D printing and can automate tasks such as catalyst placement, bridge building, and reaction sequences.
Chemical engineers at the University of Pittsburgh have developed a system that mimics feeding, fighting, and fleeing responses in microbial particles. The system uses catalyst-coated sheets to create chemical gradients, allowing particles to respond to their environment and interact with each other.
Researchers at UTokyo develop a new process to produce ammonia more efficiently and sustainably than the current Haber-Bosch method. The Samarium-Water Ammonia Production (SWAP) process reduces energy consumption, raw material costs, and environmental impact.
Researchers at Brookhaven National Laboratory have developed a catalyst that efficiently decomposes nerve agents like sarin, eliminating their harmful effects. The multimodal approach used in the study identifies the active site of the catalyst and validates its effectiveness in real-life conditions.
Researchers from TPU, Germany, and US successfully functionalized 'white graphene' using eco-friendly photopolymerization without altering its properties. The new material was used as a catalyst for splitting water into hydrogen and oxygen, offering a promising alternative to expensive platinum or gold.
Researchers have developed a new type of carbon-based catalyst made from natural bacterial cellulose, showing high specific surface areas and large pore volumes. The catalyst exhibits versatility in accelerating various important reactions, outperforming state-of-the-art catalysts in some cases.
Researchers from University of Science and Technology of China successfully developed a ruthenium-based single-atom alloy catalyst accelerating water electrolysis with lower overpotential. The catalyst shows improved stability and activity compared to commercial RuO2, making hydrogen production through water electrolysis more efficient.
Researchers have developed a novel strategy for synthesizing non-precious metal catalysts for zinc-air batteries, achieving high electroactivity in neutral electrolytes. The resulting zinc-air battery exhibits superior discharge performance and stability.
Researchers synthesized new In0.28Ga0.72Sb nanowires with high carrier mobility and fast IR response, outperforming existing materials in terms of responsivity and decay times. The minimized crystal defects are attributed to a catalyst epitaxy technology that enables precise atom alignment.
Researchers discovered that amorphous molybdenum sulfide has the highest catalytic activity for producing hydrogen from sunlight. The catalyst improves its performance by releasing sulfur gas initially, leading to a more efficient water-splitting process.
Scientists have identified a way to convert cyclohexane to useful products at lower temperatures, reducing the need for energy and minimizing unwanted byproducts. The new catalysts work at temperatures as low as 100°C, protecting intermediate products from further conversion.
Researchers tracked platinum and tin atom movement during iNPs synthesis, discovering intermediate phases with unique catalytic properties. This discovery enables control over material synthesis and potential applications in energy-efficient fuel conversion and biofuel production.
Researchers have found that water accelerates the conversion rate of furfural by a factor of two to three. The presence of water enables hydrogenation to occur in the liquid phase instead of on the catalyst surface.
A novel iron catalyst has been discovered to simplify and streamline organic chemical synthesis, reducing costs and waste. This breakthrough could have huge implications for industries such as pharmaceuticals and petrochemicals.
Theoretical approach uses layers formed by liquids to arrange nanoparticles into unique structures for optics, plasmonics and electronics applications. By controlling nanoparticle properties, researchers can create exotic arrangements, such as strings or sheets, with potential benefits in multi-stage chemical catalysis.
Researchers developed a catalyst that can remove pollutants at low temperatures, outperforming current technology and reducing platinum required. The breakthrough could have significant impact on exhaust emission control, directly addressing the 150-degree challenge.
Researchers have developed a new catalyst that can efficiently break down ammonia in the air, converting it into harmless nitrogen gas and water. The catalyst, made of gold nanoparticles on a metal oxide framework, is effective at room temperature and has been shown to reduce gases contaminated with ammonia to undetectable levels.
A team of researchers from Tokyo Metropolitan University has demonstrated that the tunable hydrophobic nature of dense siloxane gels strongly correlates with their catalytic activity. The study shows that molecules with different hydrophobicity interact differently with surfaces, leading to increased or decreased catalytic activity.
Researchers found that magnetic stir bars become permanently contaminated with metal nanoparticles after a week of use, affecting subsequent reactions. Regular cleaning procedures are insufficient to remove such contamination completely.
Researchers have developed an anode for electrolysis of seawater into hydrogen and oxygen, utilizing nickel sulfide and nickel-iron hydroxide catalysts. This innovative approach enables the production of clean fuels without desalination, opening doors to a more sustainable energy future.
Researchers at Kanazawa University have developed a plasma-assisted MnO2 filter that produces exhaust free of NOx and SOx. The filter augments the desulfurization properties of MnO2 with ozone from an atmospheric-pressure non-equilibrium plasma, improving NO2 elimination by over 99%.
The development of a new generation of catalysts is crucial to meet the world's demand for clean energy. Researchers at the University of Copenhagen have made a breakthrough in finding better, cheaper catalysts using high-entropy alloys, which can aid the conversion of chemical substances in chemical reactions.