Articles tagged with Photocatalysis
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Researchers from Skoltech and international partners study crystal structure and optical properties of new two-dimensional compounds for energy conversion. The study used advanced imaging equipment to analyze the material's structure, leading to potential improvements in photocatalytic activity.
Phosphonate functional groups on La,Rh:STO surface supply protons to active site, enhancing hydrogen production activity. Bulk phosphate buffer solution reduces activity in this design.
Researchers at Tokyo University of Science devise a new electrochemical technology to manufacture ammonia-based fertilizer from urea, addressing the problem of food production in closed environments. The study aims to provide a solid basis for sustaining long-term stay in extremely closed spaces such as space stations.
Researchers found that double element co-doped CQDs can capture photogenerated electrons, reducing fluorescence and improving carrier separation. The kinetic constant of PNCQDs/TiO2 reached 3.4 times that of pure TiO2 under simulated sunlight.
Researchers at Kyoto University discovered a method to introduce defects into perovskite oxynitrides using strain, altering their physical properties. The approach could aid in developing photocatalysts.
Researchers at Kobe University developed a high-speed detection method to observe oxygen generated by artificial photosynthesis, revealing the mechanism behind water-to-oxygen reaction. The new method is 1000 times faster than conventional methods and could contribute to developing efficient photocatalysts for clean energy.
Researchers have developed a single-atom alloy co-catalyst that significantly enhances photocatalytic hydrogen production activity. By precisely controlling the Pt content in the Pd@Pt/MOF composite, they achieved an exceptionally high photocatalytic activity, surpassing its counterparts.
The study found that titanate nanotubes (TNTs) composites exhibit superior photocatalytic performance in generating hydrogen from formic acid, outperforming titanium dioxide (TiO2). The high surface area of TNTs enables improved adsorption and interaction with platinum, leading to enhanced selectivity and efficiency.
Researchers at USTC have designed a simple method to synthesize single crystalline wurtzite CZIS and CZGS nanobelts with exposed (0001) facets, showing excellent photocatalytic performances under visible-light irradiation. This work demonstrates the significance of surface engineering in quaternary sulfide photocatalysts.
Researchers have developed a simple, environmentally friendly process to produce well-defined linear and star-shaped polymers with ultrahigh molecular weights from nonconjugated monomers. The photoenzymatic RAFT polymerization method offers outstanding control over composition, molecular weight, and architecture.
Researchers have developed efficient photocatalysts that can clean surfaces, sterilize medical instruments, and purify water under visible radiation. The new catalysts use natural aluminosilicate nanotubes with cadmium sulfide quantum dots, showing promise for environmental applications.
Gallium nitride is a flawed water splitting photocatalyst due to photocorrosion damage. Combining it with iron oxide improves its working lifetime and hydrogen production rate by five times.
Scientists have developed a plasmonic photocatalyst with a nanocavity that accumulates charges, improving the efficiency of water oxidation reactions. The discovery could lead to more efficient conversion of renewable sunlight into useful fuels and chemicals.
Researchers from Xinjiang University developed a new core-shell nanocatalyst Au@CDs for enhanced visible-light photocatalytic nitrogen fixation, showing a 3.5-fold increase in activity compared to bare CDs.
Researchers develop a photocatalytic system that utilizes sunlight to drive chemical reactions, producing hydrogen fuel from water. The system achieves 100% conversion of sunlight to hydrogen with a single nanoparticle producing 360,000 molecules per hour.
A team of scientists led by prof. Juan Carlos Colmenares developed an efficient reactive adsorbent that can purify air from various toxic compounds cheaply and effectively. The material, made from titanium dioxide and graphite oxide, uses photocatalysis to break down toxins into less harmful elements.
Researchers at Kazan Federal University developed stable organo-inorganic hybrid nanocomposites that can effectively degrade toxic dyes in water. The composites, combining titanium oxide and noble metals, show a synergistic effect, increasing photodegradation efficiency up to 94%.
Researchers have developed a new photocatalyst that can generate hydrogen from water with high efficiency, using nanoscale metal oxide sheets and a ruthenium dye molecule. The material works under visible light, the main component of sunlight, and has a record-breaking turnover frequency and external quantum yield.
Researchers from Tokyo University of Science improve light-driven water-splitting to produce hydrogen by etching the reaction catalyst with plasma jets in solution. This technique enhances the properties of BiVO4 nanocrystals, resulting in better catalytic performance and improved water splitting.
Scientists developed hollow structured photocatalysts with controllable spatial location of active metals, chemical compositions, and tunable shell thickness. AuPt@HMZS nanoreactors exhibited excellent catalytic activity in cinnamyl alcohol oxidation under visible light.
Researchers have introduced a new concept for designing photocatalytic systems with reversed configurations, which significantly improve light absorption, charge separation, and surface catalysis. This design concept can be extended to other systems and reactions to promote solar-to-chemical conversion.
Scientists successfully produced a photoanode with extremely high conductivity by annealing hematite mesocrystals to a transparent electrode substrate. This enabled the separation of electrons and holes quickly, promoting the oxidation reaction and achieving the world's highest solar water-splitting performance.
Scientists develop a simple method to modify graphitic carbon nitride, improving its catalytic and electrocatalytic performance. This advancement has potential applications in environmental pollution treatment and renewable energy production.
Researchers have developed a wide-spectrum responsive Bi8(CrO4)O11 nanorod photocatalyst with exceptional performance in water oxidation and pollutant degradation. The new material enables efficient conversion of sunlight into chemical energy, facilitating the simultaneous degradation and mineralization of pollutants.
A new photocatalyst material converts methane into synthesis gas at lower temperatures than traditional thermal reactors, avoiding aggregation and coking issues. This eco-friendly development has significant implications for reducing carbon emissions and transitioning to renewable energy applications.
Researchers at Argonne National Laboratory have developed a photocatalyst made of cuprous oxide that can selectively reduce carbon dioxide to methanol using sunlight. The catalyst's unique geometry and surface structure enable it to convert CO2 into a usable fuel with high selectivity.
Researchers developed a graphene-titania composite that degrades up to 70% more atmospheric nitrogen oxides than standard titania in real pollutant tests. The composite can be coated on materials like concrete to passively remove pollutants from the air, promoting a healthier environment.
Researchers at the University of Münster have developed a novel method to build three-dimensional scaffolds from flat aromatics using light. The method utilizes a photocatalyst to facilitate an energy-transfer catalyzed intramolecular [4+2] cycloaddition, resulting in the creation of dehydroisoquinuclidines and other valuable structures.
Scientists have successfully created a highly efficient method to convert sunlight into hydrogen using hematite mesocrystal-based photoanodes. This breakthrough improves light-to-energy conversion efficiency and enables large-scale production of clean fuel hydrogen, making it a viable source of renewable energy.
Researchers have developed polyoxometalate-based coordination frameworks that selectively reduce CO2 to methane with high photocatalytic activity. The integration of polyoxometalates and metalloporphyrin coordination frameworks enhances the reduction efficiency, allowing for the efficient conversion of CO2 to a valuable hydrocarbon fuel.
Osaka University researchers link time-resolved microwave conductivity measurements to photocatalytic performance, enabling rapid screening of clean energy generating materials. This approach accelerates the development of hydrogen-producing materials, increasing efficiency and reducing processing time.
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 Estonian Research Council developed a new method for improving air purifier efficiency by analyzing oxygen adsorption. The research, published in Surfaces and Interfaces, found that oxygen plays a significant role in photocatalytic processes alongside UV radiation.
Researchers at KTH Royal Institute of Technology developed an innovative nanocoating technology that can degrade microplastics using visible light, reducing energy consumption and byproducts. The technology showed a 30% increase in degradation of low-density polyethylene microplastic residues.
Researchers from Yangzhou University and the Chinese Academy of Sciences create a metal-free photocatalyst that can purify pathogen-rich water in 30 minutes with over 99.9999% disinfection efficiency under visible light irradiation. The catalyst's high activity and low ecotoxicity make it a promising approach for global clean water sca...
A new MOF-based photocatalytic system has been developed to simultaneously produce hydrogen and degrade organic pollutants in water. The system utilizes nickel phosphide and demonstrates efficient photocatalysis under visible light.
Researchers have discovered that nanodiamonds can be used as photocatalysts to produce methanol from CO2 and water. The process requires UV light excitation but recent studies suggest that intermediate stages can be created in the band gap by doping with foreign atoms, enabling visible spectrum usage.
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.