Articles tagged with Photocatalysis
Researchers have developed a new method for making valuable compounds by combining enzymatic and photocatalysts. The study, published in Nature, found that this combination can create important active pharmaceutical intermediates for producing pharmaceutical drugs.
A research team led by Professor Su-Il In has developed high-efficiency photocatalysts that can selectively convert carbon dioxide into methane or ethane. The catalysts have shown promising results, with conversion rates higher than conventional reduced titanium dioxide photocatalysts.
Researchers have synthesized a new 2D material called hematene from iron ore, which exhibits enhanced photocatalytic properties. Hematene's ability to split water into hydrogen and oxygen makes it an efficient candidate for generating electricity.
A new photocatalyst composed of an organic semiconductor material and an iron complex selectively reduces CO2 to CO under visible light, converting the major factor of global warming into a valuable carbon resource. The efficiency of this process is comparable to that of precious metal or rare metal complexes.
Researchers developed a novel double-layered porous nanotube structure with spatially separated photoredox surfaces for enhanced photocatalytic activity. The structure, synthesized using a self-template strategy, showed improved charge carrier separation and surface redox reaction sites.
Scientists at Tokyo Institute of Technology have developed a new photocatalytic material using fluorine, which exhibits an unusually small band gap and can efficiently absorb visible light. The material shows promise for improving solar energy conversion efficiency.
Researchers have developed a new method to boost the efficiency of photocatalysts using hollow gold-silver nanoshells. This innovation could lead to the production of large amounts of hydrogen gas using only water and sunlight. The technique has the potential to provide a clean and affordable source of energy.
Researchers developed nanostructured polymeric carbon nitrides as catalysts for hydrogen production, increasing efficiency under visible light irradiation. The nanostructure with large pores and specific functionalities improved the catalytic properties, approaching that of inorganic catalysts.
Researchers at DGIST developed a highly efficient titanium dioxide-based photocatalyst that can convert carbon dioxide into methane. The newly created material shows the highest conversion rate of 12.49% and has been proven to increase methane conversion efficiency up to 29 times using platinum nanoparticles.
Researchers have developed a new hybrid nanomaterial that can efficiently extract hydrogen fuel from seawater using solar energy. This breakthrough could lead to a new source of clean-burning fuel, reducing demand for fossil fuels and boosting the economy of Florida.
Researchers at Osaka University developed a new metal-free photocatalyst that absorbs a wider range of sunlight than before, producing visible and near-infrared light-driven hydrogen from water. This breakthrough could lead to cheap and clean hydrogen fuel, tackling the challenges of the hydrogen economy.
A new study introduces a novel design for carbon quantum dot (CQD) modified Bi2WO6 photocatalysts, demonstrating enhanced photocatalytic performance in pollutant degradation and hydrogen evolution. The CQDs enhance the photo-absorption range while increasing charge separation efficiency.
Scientists have developed a light-activated material that can chemically convert carbon dioxide into carbon monoxide without generating unwanted byproducts. The material, a nickel organic crystalline structure, showed near 100% selectivity for CO production and no detection of competing gas products.
A team of researchers has created a photocatalyst that can generate hydrogen from water vapor using sunlight, producing the fuel without electrolytes or external power sources. The novel paint-like material can be applied to any surface, including building facades, and enables hydrogen production almost anywhere.
A new nanomaterial capable of reducing CO2 with high selectivity and turnover number has been developed by Tokyo Tech. The material consists of carbon nitride nanosheets combined with a metal structure known as binuclear ruthenium(II) complex, resulting in unprecedented binding of RuRu' to the nanosheet surface.
A new titania photocatalyst has been developed to convert carbon dioxide into methane three times more efficiently than existing catalysts. The photocatalyst's controlled band gap improves light absorption and charge separation, increasing the conversion rate of CO2 into methane.
Researchers at Kobe University have developed a new photocatalyst that increases hydrogen production tenfold. By deliberately creating a lack of uniformity in size and arrangement of crystals, the team was able to spatially separate electrons and holes, preventing recombination and increasing conversion efficiency.
Researchers explore metal nanoparticles for visible-light photocatalysis, enhancing charge-carrier separation and achieving broadband light-harvesting. However, challenges remain in optimizing particle size and improving efficiency.
Researchers have shed light on the absorption of light by anatase titanium dioxide using cutting-edge spectroscopic techniques and theoretical calculations. They discovered that strongly bound excitons exhibit novel properties, including confinement to a two-dimensional plane and stability at room temperature.
Researchers observed a significant increase in photocatalysis rates after recycling catalysts, with rates up to 1.7 times higher in the second cycle and 3.1 times higher in the third cycle.
David Wendell's technology targets harmful pathogens like E. coli, Listeria, and protozoa while preserving healthy bacteria in public drinking water. It uses light-generated hydrogen peroxide to eliminate outbreaks, without adding contaminants to the environment.
Researchers at the University of Pennsylvania have developed a new material that can produce hydrogen from sunlight and biomass-derived compounds, a step closer to creating a sustainable and clean energy source. The material uses titania nanorods to control the chemical reaction, increasing hydrogen production rates.
Researchers developed a new photocatalyst system boosting hydrogen production by up to 3.5 times, using ferrite to enhance charge carrier separation and oxidative reaction kinetics.
New photocatalysts transform lignin into valuable aromatic compounds, reducing environmental burden. Laboratory studies show up to 90% selectivity in reactions, enabling industrial-scale processing.
Chemists at LMU München have created a new class of porous organic materials that can be used as molecularly tunable photocatalysts for light-driven hydrogen gas production. These materials exhibit features facilitating photocatalytic processes and offer a combination of practicality and efficiency.
Researchers have discovered a new pathway to construct carbon-oxygen bonds using a light-activated catalyst, expanding nickel chemistry's potential impact on pharmaceuticals and agriculture. The breakthrough overcomes previous challenges with traditional nickel catalysis.
Researchers have developed a hybrid photocatalyst using titanium dioxide nanoparticles, silver, and reduced graphene oxide that can break down BPA under visible light. This new material has significantly improved photocatalytic activity compared to traditional TiO2 nanoparticles.
A new synthesis method enables the creation of nanostructures that efficiently split water into hydrogen fuel using sunlight. The approach allows for the design and construction of higher-order nanostructures with specific symmetries or shapes, enabling potential applications in quantum computing, sensors, and clean energy.
A team of chemists at UC Riverside proposes a new model explaining the promoting effect in photocatalysis, suggesting that excited electrons promote hydrogen reduction on the semiconductor surface rather than transferring to metals. This radical approach could lead to the development of more economical and efficient photocatalysts.
A recent study published in Chemical Reviews suggests that photocatalysis offers the greatest potential for removing ethylene gas, reducing spoilage and financial losses. By transforming ethylene into carbon dioxide and water, this technology has the potential to increase food quality and availability globally.
Researchers at the University of Illinois have developed a new material approach that enhances visible light absorption in titanium dioxide, leading to increased solar cell efficiency. This breakthrough has significant implications for clean energy production, waste water purification, and other applications.
Researchers at Ruhr-University Bochum develop novel composite materials to enhance the degradation rate of photocatalysts. The goal is to implement these photocatalysts into a liquid paint for easy coating on photoreactors, enabling efficient and cost-effective water decontamination in remote areas.
Researchers have successfully created a nano-bio PEC electrode, consisting of iron oxide conjugated with a protein from blue-green algae, which is twice as efficient in water splitting as iron oxide alone. The use of phycocyanin, a light-harvesting protein, improves the electrode's ability to absorb photons and generate photocurrent.
Researchers from Lawrence Berkeley National Laboratory created a durable and efficient photocatalyst that can collect solar energy to extract hydrogen from water. The disorder-engineered nanocrystal absorbs infrared light, making it attractive for use in clean-energy technologies.