Articles tagged with Photocatalysis
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Researchers at ITMO University have developed a new solution for cleaning up contaminated water by harnessing the power of light. Carbon dot-polymer composites are revolutionizing the cleanup of toxic wastewater, making it more efficient and scalable.
A new 'capping-and-coupling' strategy transforms native sugars into compounds known as C-heteroaryl glycosides in one step through photocatalytic carbon-carbon bond formation. This breakthrough enables simple and efficient coupling of diverse nitrogen-containing aromatics, offering a powerful avenue for late-stage glycosylations.
A team from the University of Illinois developed a photobiocatalytic platform that enables Escherichia coli to produce complex molecules through light-driven enzymatic reactions. This breakthrough broadens the capabilities of biomanufacturing, offering a promising avenue for sustainable production of chemicals and materials.
Researchers have developed a recyclable photocatalyst that harnesses visible light to efficiently remove fulvic acid and other organic pollutants from water. The BiOCl MXene composite achieved removal rates of up to 98.43% for fulvic acid in just 30 minutes, with high durability and versatility.
A team of scientists developed a simple biochar-based technology to strip self-toxic chemicals from pepper growing soils and restore healthy seed germination. The engineered material, HRP CBC, consistently outperformed other treatments in removing toxic phenolic acids and achieving at least 50% removal within two hours.
A novel approach to designing crystalline organic nanofiber photosensitizers has been developed. These materials exhibit exceptional light harvesting and singlet oxygen generation capabilities, enabling rapid photooxidation of organic substrates.
A team of researchers at Chalmers University of Technology has developed a new way to produce hydrogen gas without the use of platinum, a scarce and expensive metal. The process uses sunlight and tiny particles of electrically conductive plastic to efficiently produce hydrogen.
Researchers have developed a new piezo-photocatalytic material that dramatically improves the removal of carbamazepine from water. The oxygen-doped MoS₂ catalyst achieves rapid and complete degradation within minutes, outperforming conventional photocatalytic approaches.
Researchers at Rice University developed a material that uses light to break down PFAS and other contaminants. The covalent organic framework (COF) material, grown directly onto a hexagonal boron nitride film, requires only light to activate its photocatalytic reactions.
The study reports a novel strategy for highly efficient photocatalytic synthesis of hydrogen peroxide (H2O2) from neutral water. A Pd-CNO2 coordination structure is integrated into a keto-form anthraquinone-based covalent organic framework, developing a highly efficient single-atom catalyst.
A new photocatalyst has been developed that significantly boosts the efficiency and stability of hydrogen peroxide generation under visible light. The catalyst, known as a TTT COF, achieves nearly 30 millimoles per gram per hour in aqueous solution, outperforming its imine-based precursor.
Researchers developed a single-atom Cu-N2O1 site that achieves high photocatalytic methane conversion to ethanol rates and selectivity. The novel strategy breaks the activity-selectivity seesaw effect in existing processes.
Researchers at CiQUS developed a sustainable method using red light and recyclable COF catalysts to promote chemical reactions efficiently. The study highlights the potential of COFs as red-light-active heterogeneous photocatalysts, offering a significant step toward greener chemical methodologies.
Researchers developed a clean process to transform microalgae and agricultural residues into biofuels, bio-adsorbents, and fluorescent carbon nanodots. The study offers a sustainable way to reuse biomass resources, contributing to renewable energy production and environmental protection.
Researchers from NUS pioneered a photocatalytic atom-swapping transformation that converts oxetanes into four-membered saturated cyclic molecules. This breakthrough simplifies the synthesis of pharmaceuticals and complex drug analogues, reducing steps from 8 to 4.
Researchers developed a novel photocatalytic carbon-carbon double bond cleavage strategy, achieving efficient synthesis of α-aryl ketones from anhydrides and aromatic olefins under mild conditions. The method exhibits metal-free nature, broad substrate applicability, and good functional group tolerance.
A new method for constructing heterojunctions using a small organic molecule containing multi-terminal pyridine and graphitic carbon nitride improves charge separation efficiency. This approach promotes the extensive deposition and uniform dispersion of metal atoms, leading to high photocatalytic hydrogen production rates.
Researchers used quantum-chemical molecular dynamics to visualize the ultrafast formation of polarons in NaTaO3, a key photocatalyst for solar water splitting. Positive hole polarons stabilize rapidly and significantly within 50 femtoseconds, while electron polarons show insignificant stabilization energy change.
Researchers develop a novel immobilized photothermal-photocatalytic integrated system for efficient hydrogen production. The system combines photothermal substrate with high-performance photocatalysts to enable synergistic liquid water evaporation and steam-phase water splitting under light illumination.
Researchers found iron-biochar composites milled in a nitrogen atmosphere exhibit superior catalytic performance for degrading organic pollutants. The composite achieved a phenol removal rate of 90.3% when used to activate persulfate, outperforming those milled in air or vacuum.
A research team developed a photochemical strategy to realize heterolytic H2 dissociation using gold-loaded titanium dioxide as a model photocatalyst. The reaction was driven by electron-hole pairs formed upon UV irradiation, producing reactive H2 species that selectively reduced polar functional groups.
Researchers at The University of Osaka have invented a novel, unsymmetrical hetero[8]circulene molecule with unique properties that make it a potent organic photocatalyst. The molecule can speed up chemical reactions triggered by light, paving the way for sustainable and inexpensive material creation.
Researchers developed ultrathin porous NiO nanosheets with abundant oxygen vacancies, which exhibit exceptional performance in photocatalytic CO2 reduction. The catalysts achieve high CO evolution rates and selectivity under pure CO2 atmospheres.
Researchers have developed metal-free organic semiconductor photocatalytic H2O2 production, providing a robust material platform for green and efficient synthesis. Novel surface reactions can fundamentally increase the utility of photogenerated excitons by exploiting unexpected chemical processes.
Scientists discovered a novel method to synthesize gold-polymer nanocomposites within living E. coli bacteria, creating natural microreactors for complex nanostructure formation. The approach enables spatially controlled and eco-friendly synthesis of functional materials.
Researchers developed a novel photocatalytic system utilizing visible-light-absorbing quantum dots to enhance photoreduction efficiencies. The system enables hot-electron generation under mild conditions and achieves remarkable efficiency improvements.
Scientists from Institute of Science Tokyo create photo-switchable binding of DNA nanostructures that generate two distinct directional motions. The research paves the way for innovative fluid-based diagnostic chips and molecular computers.
Researchers explore strategies for converting plastics into valuable chemicals through photocatalysis, highlighting indirect conversions of PET, PLA, and PE, as well as direct conversions of PE, PLA, and PVC. The review also discusses challenges and future outlooks for this clean energy source.
Janus heterobilayers have shown promising potential for photocatalytic water splitting, converting sunlight into clean hydrogen fuel with an impressive 16.62% efficiency. This innovation addresses traditional challenges, paving the way for a more sustainable future.
Researchers introduce Onset Intensity for Temperature Dependence (OITD) to identify rate-limiting steps in photocatalytic reactions. The study reveals distinct rate-limiting behaviors for different materials, highlighting the importance of surface accessibility in optimizing photocatalytic material design.
Researchers developed a simple, economical and environmentally friendly purification method for mullite-type bismuth ferrite, improving its efficiency in producing green hydrogen. The process uses light and glycerol to eliminate unwanted compounds, resulting in high-purity material suitable for photoelectrochemical reactions.
Researchers synthesized three porphyrin-based COF materials with tunable structural distortion, revealing correlations between linker distortion and material properties. The NN-Por-COF photocatalyst exhibits exceptional CO2 reduction performance under simulated industrial flue gas conditions.
A new database has been created to summarize progress in selective dehydrogenation of organic compounds through photocatalysis, enabling the accurate ranking of photocatalytic systems. The database contains 236 entries and provides insights into future directions for the field, including identifying promising photocatalysts and reactions.
Researchers engineered conjugation of donor and acceptor units in covalent organic frameworks to enhance photocatalytic H2O2 production. USTB-46 achieved a high yield of 8274 mmol g−1 h−1, attributed to optimized light absorption, thermodynamic catalytic activity, and compatible D-A units.
A recent study from Dalian Institute of Chemical Physics measures surface charges in liquid environments, revealing an additional driving force that pulls photogenerated electrons to the surface. The researchers also found that local surface potential varies with pH and identified an optimal pH range for efficient charge transfer.
Researchers have developed a novel semiconductor material that significantly improves the efficiency of photocatalytic water splitting by eliminating charge recombination and facilitating efficient charge separation. The Sc-doped TiO2 semiconductor achieves a record-breaking quantum yield of 30.3% and a solar-to-hydrogen efficiency of ...
Researchers have developed nanomats that can absorb light energy to break down harmful pollutants in air and water. These lightweight blankets can be reused multiple times and are environmentally friendly, offering a promising solution for clean drinking water production.
Researchers at HKU have developed a photocatalytic approach to converting methane into ethanol, achieving an impressive apparent quantum efficiency of 9.4% and a methane conversion rate of 2.3%. This innovative method offers a highly desirable approach to decarbonising the chemical and fuel industries.
The newly synthesized monolayer Ti3C2Tx transforms photocatalytic bioaerosol disinfection at the catalyst-cell interface. The material achieves a sterilization efficiency of 3.3 log in just 12.8 seconds, far exceeding traditional TiO2.
Professor Kazunari Domen's research develops novel materials and techniques for efficient solar energy harvesting and scalable hydrogen production. His work enables the successful development of large-scale solar-driven hydrogen production units, paving the way for a clean energy future.
A novel double aryne insertion strategy has simplified the production of complex thioxanthones, a type of organic compound with various industrial and medical applications. The new method enables efficient synthesis of diverse thioxanthone derivatives, including functional molecules and photocatalysts.
Researchers at USTC have developed a novel photocatalyst that can efficiently degrade 'Forever chemicals' at low temperatures. The method involves the use of a super-photoreductant, KQGZ, which can promote complete defluorination and mineralization of Teflon and small molecule PFASs.
Rice scientists develop new nanomaterial that kills bacteria in biofluids under visible light, with minimal degradation and low lead leaching. The findings suggest potential applications in water treatment and therapeutics.
Julian West, assistant professor of chemistry at Rice, recognized for harnessing free radical intermediates through inner sphere photocatalysis. His work holds significant implications for organic synthesis and developing next-generation therapeutics and materials.
A new microwave-assisted synthesis route has improved the performance of a coordination polymer photocatalyst, achieving a record-breaking value for CO2-to-formate conversion with a nearly ten-fold increase in apparent quantum yield. The improvements are attributed to well-crystallized material and surface area increases.
Researchers at Colorado State University have developed a new method to break down PFAS, a group of human-made 'forever' chemicals. The system uses an LED light-based photocatalytic approach that can be used at room temperature, offering a more sustainable and efficient solution than traditional chemical manufacturing processes.
Rice researchers have created a catalyst that leverages plasmonic photocatalysis to break down methane and water vapor into hydrogen and carbon monoxide without external heating. The new catalyst system enables on-demand, emissions-free hydrogen production, which could transform the energy industry.
Researchers from Kyushu University successfully promoted singlet fission by introducing chirality into chromophores, achieving high SF efficiency in aqueous nanoparticles. This breakthrough enables applications in energy science, quantum materials, and photocatalysis.
Researchers have developed a novel photocatalyst by combining g-C3N4 with Bi4O5Br2 and graphene, resulting in efficient degradation of pollutants. The CN/BOB-16 heterostructure exhibited superior performance, surpassing existing benchmarks, and confirmed the key role of Z-type heterojunctions in generating active species.
Researchers at Japan Advanced Institute of Science and Technology have developed a novel method to culture antitumor bacteria using porous scaffolds, enhancing their anticancer properties and improving safety in animal testing. The approach resulted in improved survival rates in mice with breast cancer, including drug-resistant cases.
Researchers at KAIST successfully developed single-atom editing technology that maximizes drug efficacy by converting oxygen atoms into nitrogen atoms in furan compounds. This breakthrough technology enables selective editing of complex natural products or pharmaceuticals, opening new doors for building libraries of drug candidates.
Researchers from Tohoku University developed a novel method to produce hydrogen using ultrafine Rh-Cr mixed-oxide cocatalysts with facet-selective loading. This approach achieved 2.6 times higher water-splitting photocatalytic activity, paving the way for a more abundant, green energy source.
A new Cu-based catalyst is developed to improve the photocatalytic production of C1 chemicals from glucose. The catalyst, featuring nitrogen doping into TiO2, stabilizes atomically dispersed Cu+, enhancing activity and productivities of 1.97mmol g−1 HCOOH and 2.82mmol g−1 H2.
The Rice-led MURI project aims to develop innovative single-atom reactor systems and analyze various chemical processes of strategic importance to the DOD. The researchers, led by Naomi Halas, seek to improve energy efficiency and reduce protocol intensity in chemical reactions.
The Michigan-based system produces ethylene with efficiency, yield, and longevity well above other artificial photosynthesis systems. It achieves a five to six times better performance in converting carbon dioxide into ethylene.
A novel catalyst Au/BiOx-TiO2 enhances oxidative methane coupling by activating C-H bonds and preventing overoxidation, yielding 97% selectivity for C2+ products. The photocatalyst demonstrates stable performance up to 50 hours and outperforms previous catalysts.
Scientists at Johannes Gutenberg Universitaet Mainz create a new approach to prepare highly efficient dyad photocatalysts through electrostatic interactions, outperforming established catalysts. The novel method enables the use of inexpensive additives to improve performance and durability.
Researchers successfully observe and identify the reactive electron species for photocatalytic hydrogen evolution on metal-loaded oxides, shifting the paradigm on the traditionally believed role of metal cocatalysts. The electrons shallowly trapped in the in-gap states contribute to enhancing the hydrogen evolution rate.
Researchers discovered that regulating porphyrin crystal facets can enhance the production of hydrogen peroxide (H2O2) in photocatalysts. The study found that exposing certain crystal surfaces created a strong internal electric field, which increased H2O2 generation rates.
Researchers at Dartmouth College developed a technique using light to imprint 2D and 3D images inside any polymer containing a photosensitive chemical additive. The technology enables the creation of erasable 3D displays with high resolution, applicable in surgeries, architectural designs, education, and art.