Articles tagged with Catalysis
Researchers at City University of Hong Kong have developed a lead-free perovskite photocatalyst for highly efficient solar energy-to-hydrogen conversion. The study uncovers the interfacial dynamics between halide perovskite molecules and electrolytes, enabling better photoelectrochemical hydrogen generation.
A study reveals the mechanism behind a selective switch from ethylene to acetate production in high-rate CO2/CO electrolysis. Researchers found that *CO coverage and local pH induced this switch, with acetate formation favored at high *CO coverage and high local pH.
A team at City University of Hong Kong has developed a novel approach to converting environmental temperature fluctuations into clean chemical energy using pyroelectric catalysis. By combining pyroelectric materials with localized plasmonic heat sources, the researchers achieved significantly faster and more efficient pyro-catalytic re...
Scientists have discovered a new form of carbon, LOPC, formed by heating fullerenes with lithium nitride. The new carbon consists of 'broken C60 cages' connected with long-range periodicity, exhibiting unique electrical conductivity properties.
Researchers discovered a new enzyme with molecular protection against oxygen, increasing its resistance by genetic modification. This breakthrough aims to improve protein dynamics and control inorganic centre reactivity for carbon-neutral hydrogen production.
Researchers at Ruhr-University Bochum develop base metal oxide nanoparticles that improve the water splitting process for green hydrogen production. Cubes outperform spheres as catalyst particles, increasing activity and efficiency.
Scientists develop macroporous structure to increase accessibility of active sites in single-atom catalysts, achieving high activity in oxidative esterification of furfural. The composite catalyst shows high stability and potential for industrial application in biomass valorization and pharmaceutical manufacturing.
University of Minnesota researchers develop groundbreaking new catalyst technology to convert renewable materials like trees and corn into acrylic acid and acrylates used in paints, coatings, and superabsorbent polymers. The new catalyst substantially reduces costs and increases yield, paving the way for lower-cost renewable chemicals.
Scientists at the University of Adelaide have developed a new synthesizing approach to produce customized single-atom catalysts (SACs) using 3D printing techniques. SACs can be tailored for various industrial applications and offer a more cost-effective and simpler alternative to current approaches.
A team led by prof. Sashuk created a semirotaxane molecule that can control the position of another molecule on its axis, regulating the rate of a particular chemical reaction. When exposed to blue light, the system accelerates the C-N coupling reaction by up to 5.4 times.
Research team led by Prof. Lin Zhuang found that guanine modification boosts CH4 production and suppresses C2 product formation in electrochemical CO2 reduction. The results suggest a direct correlation between surface proton transfer capability and CO2 reduction selectivity.
Researchers have developed a new method for recycling high-density polyethylene (HDPE) into fully recyclable and biodegradable material. The approach uses catalysts to cleave polymer chains, reducing carbon emissions and pollution associated with HDPE.
Researchers from City University of Hong Kong developed a novel device-engineering strategy to suppress energy conversion loss in organic photovoltaics, achieving PCE over 19%. The discovery enables OPVs to maximize photocurrent and overcome the limit of maximum achievable efficiency.
Researchers have developed a nano-scale platinum-cobalt alloy to reduce the need for rare and expensive platinum in hydrogen fuel cells, enhancing performance and stability. The new alloy achieves superior results at lower costs, paving the way for wider adoption of fuel-cell technology.
Researchers at the University of California, Riverside, have created a novel method to break down per- and polyfluoroalkyl substances (PFAS), also known as 'forever chemicals', in contaminated water. The hydrogen-infusion and UV light-based process achieves high molecular destruction rates without generating unwanted byproducts.
Researchers at USTC developed a new strategy for synthesizing axially chiral allenic compounds, achieving high enantiopurity and stereoselectivity. The method involves nickel-catalyzed asymmetric propargyl substitution and Myers rearrangement reactions.
Researchers have developed a low-cost way to extract gold and other valuable metals from electronic waste, which can be used as catalysts for reactions in pharmaceutical manufacture. The process has the potential to improve the sustainability of drug production by reducing dependence on environmentally damaging mining practices.
Researchers at the University of Münster developed a new way to produce vicinal diamines, which are crucial for biologically active molecules and drugs. The process uses light energy from blue LEDs to produce these unsymmetrically constructed compounds without using transition metals.
A new study by Bayes Business School found that co-working spaces can initially support collective exploration but ultimately inhibit collaborative practices. The study suggests that firms leave the space as interactions become less meaningful and stilted over time.
A University of Ottawa-led team identified a new entry route for SARS-CoV-2 using metalloproteinases, which may lead to more widespread cell infection and severe illness. The study suggests that variants like the Delta strain may prefer this entry method, while others like Omicron do not.
A new study pinpoints the first-ever domestication of cats to nearly 10,000 years ago in the Fertile Crescent region. Genetic analysis reveals that humans' transition from hunter-gatherers to farmers sparked the bond between humans and rodents-eating cats, leading to their migration with humans worldwide.
The new monochromator optics increase photon flux in the tender X-ray range by a factor of 100, allowing highly sensitive spectromicroscopic measurements with high resolutions. This enables data collection on nanoscale materials, such as catalytically active nanoparticles and modern microchip structures, for the first time.
Researchers have discovered that nanodiamonds can emit solvated electrons in water when exposed to visible light, a crucial step towards using them as photocatalysts. This discovery could lead to the development of inexpensive and metal-free processes for converting CO2 into valuable hydrocarbons or converting N2 into ammonia.
Researchers at KAUST have developed a soft and flexible electronic 'e-skin' that can detect minute temperature differences between inhalation and exhalation, as well as touch and body motion. The material's island-bridge atomic structure provides an inherent softness and flexibility ideal for on-skin applications.
Researchers developed a small molecule-assisted impregnation approach to synthesize carbon-supported platinum intermetallic fuel cell catalysts. The optimal additive, sodium thioglycolate (STG), suppresses PtCo sintering by coordinating with Pt and Co to form precursors.
Researchers have developed a chemical-biological method to upcycle polyethylene waste into valuable and complex compounds of pharmacological interest. Genetically engineered fungi convert carboxylic diacids derived from PE waste into natural products, including asperbenzaldehyde, citreoviridin, and mutilin.
A Japanese research team successfully constructed the first polymeric Weaire-Phelan structure, a previously theoretical form predicted to be the most efficient solution for a century-old tessellation problem. The structure was achieved through a novel polymerization-induced phase separation method.
Researchers at Princeton and Rice universities developed a low-cost technique to split hydrogen from liquid ammonia using LED light and nanotechnology, paving the way for sustainable and locally produced hydrogen. The technique overcomes a critical hurdle in realizing hydrogen's potential as a clean fuel.
Researchers at Hokkaido University have developed a simple radical-based reaction to create unsymmetric variants of molecular compounds used in transition metal catalysts. This method opens up new avenues for designing catalysts and utilizes abundant ethylene feedstock.
Charged porphyrins enable researchers to study π-electronic ion pairs and their interactions, leading to the creation of electronic materials with unique properties. The study reveals fascinating new properties of stacked ion pairs and their potential applications in fields like nanomagnetism and ferroelectrics.
Researchers developed a novel technique using isotope quenching to visualize the oxygen storage process in Pd/CeO2-ZrO2 three-way catalysts. The method revealed key insights into oxygen adsorption/desorption and surface/bulk diffusion, improving exhaust gas treatment efficiency.
The formation of fine bubbles in catalyst pores enhances gas generation reactions from liquid phase systems. This leads to a significant increase in the release of hydrogen per unit time, making the technology more compact and powerful. The discovery provides new insights into performance-limiting factors in heterogeneous catalysis.
Researchers found that adding water increases selectivity of 2,3-butanediol generation by 57%. Hydrogen bonding stabilizes radical intermediates, avoiding oxidation and promoting selective coupling. The study reveals non-chemical bonding interactions can steer reaction paths for selective photocatalysis.
Researchers used in-situ vibrational spectroscopy to study CO2 electroreduction reaction mechanisms and intermediates, revealing key insights into catalyst structure and electrolyte effects. The review highlights recent advances and future directions for this field.
Researchers at Lehigh University have secured $13.2 million in funding to improve hydrogen generation and carbon capture/sequestration technologies through a partnership with Georgia Tech's UNCAGE-ME Center. The goal is to develop catalysts that can mitigate the degradation of these technologies in real-world conditions.
Researchers develop a new type of sustainable click chemistry by incorporating copper ions into biodegradable proteins, making it non-toxic to living organisms. This breakthrough could lead to the creation of greener technologies and products.
Scientists have recorded photocatalysis charge separation processes experimentally on Cu2O particles, revealing rapid electron transfer and slower hole trapping, enabling better understanding of photocatalytic water splitting limitations. The technique allows for spatiotemporal imaging of charge transfer in photocatalyst particles.
Rice University engineers have developed a method to convert hydrogen sulfide into high-demand hydrogen gas and sulfur in a single step using gold nanoparticles. The process gets all its energy from light, offering a cost-effective alternative to traditional remediation methods.
A KAUST-led team creates selective anode catalysts for stable and efficient hydrogen evolution in seawater splitting. The nanoreactors exhibited high electrocatalytic activity and stability due to their unique structure, isolating the electrolysis from side reactions.
A University of Central Florida researcher is leading a $1.25 million project to map and manipulate materials at the nanoscale. The research aims to unlock new capabilities of materials at the nanoscale, potentially leading to new catalysts and compounds applicable in quantum science, renewable energy, life sciences and sustainability.
Researchers developed a novel 'nanoglue' strategy to stabilize atomically dispersed metal catalysts, achieving both high catalytic activity and stability. The nanoglues concept involves isolating metal atoms on small islands, suppressing migration to neighboring sites.
The THERACAT project aims to deliver drugs only to tumor sites using bio-orthogonal catalysis, a promising approach for targeted cancer treatment. Researchers developed nanoparticles bearing metal catalysts to efficiently convert inactive pro-drugs into active drugs at the tumor site.
Scientists have created a new method to stabilize precious metals as catalysts, enabling efficient use of expensive materials in various applications. The approach involves dispersing metal atoms within nanometer-sized islands of cerium oxide, which provides high surface area and stability.
Researchers at Hokkaido University have developed a one-pot-and-one-step synthesis procedure to create long and geometrically interlinked polymer molecules. This process can produce a wide range of advanced materials with applications in drug delivery, data storage, microelectronics, and nanolithography.
Researchers probed local structure and magnetic properties of a Mn-rich Cantor alloy using EXAFS and XMCD techniques. The results show complex magnetic ordering with coexistence of different phases, consistent with macroscopic behavior.
Engineers at Rice University have discovered a method to make oxygen evolution catalysis in acids more economical and practical. They replaced rare and expensive iridium with ruthenium, a far more abundant precious metal, as the positive-electrode catalyst in a reactor that splits water into hydrogen and oxygen.
Researchers studied ketene conversion over H-SAPO-11 using kinetic analysis and spectroscopy. They found two pathways: acetyl species following acetic acid ketonization or acetoacetyl species via keto-enol tautomerism with water.
Researchers develop stable catalyst that can produce ammonia at rates similar to conventional metal nitride catalysts, reducing the need for fossil fuels and lowering CO2 emissions. The new catalyst is chemically stable in the presence of moisture, enabling more efficient production under milder conditions.
Researchers have fabricated 2D Mn3O4 nanosheets with dominant (101) crystal planes on graphene as efficient oxygen catalysts for Li-O2 batteries. The catalysts achieved ultrahigh capacity and long-term stability, outperforming most Mn-based oxides.
Researchers at UT Austin developed a semicrystalline polymer that combines strength and flexibility, overcoming challenges of mixed materials in robotics and electronics. The new material is 10 times as tough as natural rubber and can be controlled with light.
Researchers at Kyushu University counted electric charges in individual platinum nanoparticles down to the electron level, revealing net charge with high precision. This breakthrough enables better understanding and development of catalysts for breaking down pollutants.
Researchers at Helmholtz-Zentrum Berlin for Materials and Energy are utilizing X-ray absorption spectroscopy to investigate oxygen evolution in electrocatalysis. This study aims to improve the efficiency of green hydrogen production by developing more stable and cost-effective catalysts.
Researchers at the University of Würzburg have developed an artificial enzyme that can split water into oxygen and hydrogen with high efficiency. The enzyme-like catalyst was designed to mimic the natural process of photosynthesis, and its development is a significant step towards sustainable hydrogen production.
A Japan Science and Technology Agency research group developed high-performance catalysts for efficient synthesis of value-added chemicals from polyester and vegetable oil. These catalysts enable nearly 100% selectivity in converting polyester into raw materials, offering a promising solution to chemical recycling.
Researchers have developed a reusable, low-cost Mn catalyst that facilitates the alkylation of ketones with alcohols via the 'borrowing hydrogen' method. The catalyst achieves high yields and can alkylate ketone-containing substrates without byproducts.
A new process developed at the University of California, Berkeley, breaks down polyethylene plastics into propylene, a feedstock for high-value plastics. The process uses catalysts to depolymerize polyethylene, producing 80% propylene and upcycling waste into valuable products.
Researchers introduce synthetic catalysts into algae cells, enabling chemical reaction upgrades to produce building blocks for polymers and chemicals. The process reduces reliance on fossil raw materials, using atmospheric carbon dioxide as a carbon source.
Researchers at Hokkaido University have developed a new catalyst that uses carbon dioxide to produce propylene more efficiently than existing methods. The catalyst also captures and converts carbon dioxide into useful resources. This breakthrough contributes to the carbon neutralization of the petrochemical industry.
Researchers at Rice University have created macroscale, modular materials from engineered bacteria that can self-assemble and perform various functions. The materials, dubbed BUD-ELMs, contain living cells that allow them to grow, repair, and respond to external stimuli.
The ANEMEL project aims to develop efficient electrolysers for green hydrogen production, targeting low-grade water sources. The €3 million EU funding will expedite prototype design and catalyse commercialisation of the technology.