Articles tagged with Adsorption
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Animal manure biochar effectively removes hazardous pollutants such as dyes, antibiotics and heavy metals from wastewater. The material's surface chemistry and mineral content support mechanisms like electrostatic attraction, hydrogen bonding and ion exchange.
Researchers developed a machine learning framework, DeePKS, to improve density functional theory calculations for CO adsorption on metal surfaces. The framework achieves near-hybrid functional accuracy with high efficiency, enabling the exploration of complex catalytic systems.
Researchers at Ohio State University developed a new approach to immobilize extracellular vesicles in a way that mimics their interactions with tissues. This allows for the study of these particles and their complex interactions with cells, enabling potential applications in disease detection, drug delivery, and biomarker discovery.
Researchers have developed a new material that captures harmful PFAS chemicals from water in seconds, surpassing traditional adsorbents' limited capacity. The nitrate-intercalated layered double hydroxide removes perfluorooctanoic acid with an exceptional capacity of 1,702 milligrams per gram.
Researchers create a new material that dramatically boosts uranium extraction efficiency, addressing one of the key challenges in sustainable nuclear energy. The study introduces a special type of covalent organic framework (COF) that shows record-high efficiency and selectivity in isolating uranium from seawater.
A new review highlights the potential of iron-enhanced biochar to capture pollutants, catalyze chemical reactions, and stabilize nutrients in soil and water systems. The material's unique features include high surface charge, improved porosity, and accelerated advanced oxidation processes.
Researchers developed a novel biochar material with a high specific surface area and micropore volume, achieving a maximum CO2 adsorption capacity of 3.434 millimoles per gram at room temperature. The material's optimal mesopore proportion enabled rapid adsorption kinetics, resolving a long-standing trade-off in biochar design.
Researchers have developed magnetic carbon adsorbents made from flax shives and eucalyptus sawdust to effectively remove toxic chemicals like pentachlorophenol from water. The materials demonstrated outstanding performance in removing up to 95% of PCP, showing excellent stability and minimal loss of performance.
A team of Chinese researchers has developed a low-cost biochar material that efficiently removes persistent metal complexes from water. The ferromanganese oxide-modified biochar can capture copper–citrate complexes, which are difficult to remove using conventional methods, achieving high removal rates and chemical stability.
A new study shows that animal manure can be converted into a valuable solution for cleaning polluted water. Biochar, a carbon-rich material formed by heating organic matter, is stable, safe, and highly effective at removing contaminants such as toxic dyes, heavy metals, and pharmaceutical residues.
A new review study reveals that PFAS are entering farmland soils through waste recycling and wastewater reuse, raising concerns for food safety. The study found that biosolids are the primary source of PFAS in agricultural soils, with soybeans showing particularly high burdens.
Researchers at Kobe University investigated how different manufacturing techniques affect the electronic structure of magnetic tunnel junctions. They found that the surface of ferromagnets is different when insulators are transferred to them compared to growing crystals on insulator flakes. This difference influences device behavior, p...
Scientists created a new material that removes nearly 86% of benzaldehyde from Chinese spirits, improving flavor quality. The AC-SiO2 composite material is reusable and provides a green solution for the liquor industry.
A new review highlights three pathways through which roots absorb micro- and nanoplastics, with leaves also taking up microplastics deposited from the atmosphere. This can lead to plant toxicity, altered soil microbial communities, and transfer through food webs.
A new study uses machine learning to optimize the adsorption capabilities of biochar for dye removal, identifying optimal conditions for maximum efficiency. This research has significant implications for addressing water pollution and achieving environmental sustainability.
A team of researchers proposes hydroxyl adsorption as a selectivity descriptor for electrocatalytic nitrate reduction to ammonia over copper-based catalysts. They found that more negative potentials and lower NO3- concentrations can improve ammonia selectivity.
Researchers have designed a novel single-atom ruthenium-doped Co3O4 catalyst that significantly promotes water splitting efficiency. The high-spin Co3+ species facilitate robust OH* adsorption and enhance the supply of H* intermediates, accelerating the Volmer–Tafel pathway of the hydrogen evolution reaction.
A team of scientists has developed a novel CO2-activated porous carbon adsorbent that selectively traps impurities while purifying target gases. The material achieves a record C3F6/C3F8 uptake ratio and produces 99.999% pure C3F8 at industrial scales.
Researchers developed a novel MoS2-confined Rh-Fe dual-site catalyst for the direct conversion of methane to acetic acid, achieving an unprecedented CH3COOH selectivity of 90.3% at room temperature. The catalyst's unique structure effectively balances C-H activation and C-C coupling, addressing long-standing challenges in this process.
Advanced electron crystallography techniques have revealed the unexpected structure of carmine, a natural red colouring agent. The substance has a well-defined, three-dimensional porous structure composed of two calcium ions, two aluminium ions, and four organic ligand molecules.
Researchers developed a novel protein, LSUBP, to enhance uranium extraction from seawater. The engineered protein achieves high adsorption capacity, offering a promising new material for effective uranium extraction.
Researchers developed a biomimetic adsorbent inspired by the natural porous structure of the Chinese sweet gum tree's fruit. The hierarchical nano-trap framework significantly enhanced ion diffusion and increased uranium adsorption capacity, outperforming competitive ions in real seawater tests.
A research group from Dalian Institute of Chemical Physics achieves electrosynthesis of ammonia from NO in a pressurized electrolyzer with ampere-level current density and long-term stability. The method uses an in situ-grown hierarchical porous copper nanowire array electrode to regulate the kinetics and thermodynamics of the reaction.
Researchers at Tohoku University developed a new synthesis method for highly pure porous organic polymers (POPs), eliminating residual impurities and achieving high porosity. The obtained POPs exhibited improved CO2 adsorption capacity, proton conductivity, and unique gas adsorption behavior.
Researchers have developed a high-temperature successive ion layer adsorption and reaction (HT-SILAR) strategy for producing high-quality, large-particle alloyed red quantum dots. This enables the creation of highly efficient QLEDs with exceptional color purity and stability.
Researchers developed a conjugated phthalocyanine framework with enhanced electron-withdrawal properties and flexibility, leading to improved capacities, rate capabilities, and cyclic stability in high-voltage lithium metal batteries. The framework also showed longer operating life and higher capacity retention.
Researchers have developed a COF-based porous liquid that can dynamically adjust its pore size in response to pressure change, significantly enhancing CO2 capture and catalytic conversion. This innovative material boasts a 24-fold higher efficiency for the reaction of CO₂ with propylene oxide compared to conventional methods.
Researchers from Tohoku University have improved a Mars climate model to account for the planet's non-uniform regolith properties. The enhanced model shows that highly absorptive regolith in mid- and low latitudes retains substantial amounts of absorbed water, which remains on the surface as stable adsorbed water.
Researchers found that brewing tea can adsorb significant amounts of toxic heavy metals like lead and cadmium from drinking water. The study revealed that steeping time played the most significant role in removing metal ions, with longer steeping times resulting in more effective filtering.
Researchers have developed a novel LiMn₂O₄ electrode material with improved lithium extraction capacity and cycle stability. The SnO₂ nanoparticle island-modified LMO electrode material shows good selectivity and stability for lithium ions, enabling efficient electrochemical salt lake lithium extraction.
Researchers at Institute of Science Tokyo developed porous organic crystals with ultrahigh-density amines, achieving fast CO2 adsorption and high thermal stability. The unique 2.5-dimensional skeleton reduces the cost for CO2 separation from flue gases.
Hydrogen and carbon monoxide adsorb onto platinum atoms in nanoscale voids, with hydrogen diffusing faster due to smaller size. The team's findings highlight the importance of engineering voids for next-generation sensors and gas separation.
Researchers have created custom-made adsorbent materials that can pull harmful phosphorus out of water by transforming cyanobacterial biomass into chemically modified activated carbon. The lanthanum-modified materials showed promise in removing excess phosphorus, even at high concentrations.
Researchers have identified clinoptilolite and biochar as cost-effective options for removing siloxane compounds from landfill gas. These natural materials can enhance the performance of adsorbents with modification techniques, offering an environmentally friendly solution to mitigate damage to energy equipment.
Researchers at Nagoya University developed a novel porous metal-organic framework (MOF) that combines adsorption and dissolution to separate oxygen from argon. The 'adsorptive-dissolution' mechanism enhances gas separation efficiency and selectivity, with potential applications in industries requiring high-purity oxygen.
Researchers have developed a liquid moisture adsorbent that can efficiently harvest water from the air at near ambient temperatures. The technology, which uses random copolymers of polyethylene glycol and polypropylene glycol, has the potential to provide clean drinking water in arid regions and during disasters.
A new covalent organic framework (COF) material developed by UC Berkeley researchers can capture CO2 from ambient air without degradation, making it a promising solution for reducing atmospheric greenhouse gases. The material's high carbon dioxide capacity and selectivity make it an attractive alternative to existing carbon capture tec...
A new MOF has been developed using a 'Merged-Net Strategy' inspired by skyscraper architecture, resulting in enhanced porosity and structural stability. The material exhibits superior water adsorption capacity and reusability compared to conventional MOFs.
Research suggests that plants can be used as an eco-friendly tool to collect and degrade plastic particles in natural ecosystems. Various plants have been found to absorb or adsorb micro- and nanoparticles through their roots or leaves, making them suitable for use as filters in wetlands or along highways.
Researchers at Tohoku University have successfully increased capacitor capacity by 2.4 times using a molecular coating method, improving its performance and lifespan. The new technology utilizes inexpensive activated carbon and can store large amounts of energy, making it suitable for next-generation energy devices.
Researchers explore key interaction sites and pathways in advanced materials for efficient ammonia capture. Functional absorbents, porous solid adsorbents and membrane materials are reviewed for their properties and potential applications.
Researchers at the University of British Columbia have developed an all-in-one solution to remove and destroy PFAS substances, also known as 'forever chemicals,' from water supply. The system combines an activated carbon filter with a patented catalyst that traps and breaks down harmful chemicals into harmless components.
Researchers developed a crystalline solid that can adsorb and release ammonia, making it easy to recover. The material's high density and ease of desorption make it a promising solution for efficient hydrogen storage.
Scientists have developed a nanocomposite material with sodium carbonate and nanocarbon to capture carbon dioxide from industrial emissions. The new material shows high CO2 capture capacity and can be regenerated for up to 10 cycles, reducing energy consumption.
A research team at New Jersey Institute of Technology has developed a novel pre-treatment process to enhance the performance of existing GAC systems for PFAS removal. The approach involves adding a chemical that forms hydrophobic complexes with PFAS molecules, improving removal efficiency and cost-effectiveness.
Researchers at HKUST have developed a sustainable and controllable strategy to manipulate interfacial heat transfer, enhancing the performance of eco-friendly cooling in various applications. By leveraging a water adsorption process, they increased thermal energy transfer across interfaces by up to 7.1 times.
Researchers have developed an active learning strategy to accelerate the synthesis of high-performance engineered biochar with enhanced CO2 uptake. The approach nearly doubled CO2 capture performance, showcasing its transformative impact.
Researchers at IISc developed a novel hydrogel that can remove 95% of polyvinyl chloride and 93% of polypropylene microplastics from water. The hydrogel uses UV light irradiation and has a durable structure, making it suitable for repeated use.
New research reveals spent coffee grounds can act as an efficient adsorbent of bentazone, a highly neurotoxic herbicide. Activated carbon from spent coffee grounds showed a 70% efficiency in bentazone removal and high sensitivity to pollutants.
Competitive DOM removal impacts OMP adsorption, with nonpolar molecules having higher competitiveness due to medium aromaticity. Aromatic DOM is not competitive against OMPs in adsorption, contrary to initial expectations.
Scientists have developed a nanoporous magnesium borohydride structure that stores five hydrogen molecules in three-dimensional arrangement, achieving unprecedented high-density hydrogen storage. The material exhibits a capacity of 144 g/L per volume of pores, surpassing traditional methods and offering a promising alternative to large...
Researchers in Chile developed a prototype using microorganisms to remove VOCs and PAHs from indoor air, achieving efficiencies above 90%. The system can operate for 8 months without losing efficiency. This breakthrough offers a potentially low-cost solution to improve indoor air quality.
Researchers have developed a promising new solar-powered technology to harvest water from air, capable of increasing daily water supply needs in dryland areas. The system uses a super hygroscopic gel to absorb and retain large amounts of water, with the potential for large-scale practical applications.
A novel aqueous lubricant technology has been developed at the University of Leeds, providing a longer-lasting solution for people with dry mouth conditions. The substance, composed of microgel and hydrogel, binds strongly to the surface of the mouth, reducing desorption and offering up to five times more effective relief.
Chinese researchers are exploring advanced porous nanomaterials and technologies to reduce radionuclide discharge into the environment. These materials possess high specific surface area, abundant pore structures, exceptional stability, and design flexibility, making them promising candidates for radionuclide removal.
Researchers at São Paulo State University have developed a technique to remove glyphosate, a widely used herbicide, from contaminated water. By using functionalized cellulose fibers from sugarcane bagasse, they can effectively adsorb and remove glyphosate residues from an aqueous medium.
Researchers from Japan have solved a long-standing puzzle of porous soft materials, revealing the importance of elastic heterogeneity in tuning molecular adsorption/desorption properties. The study provides physicochemical insight into the origin of elastic heterogeneity within MOFs, with applications to imparting targeted properties.
A team of researchers from SUTD and A*STAR has developed a quick and energy-efficient technique to produce 2D mica nanosheets, which have shown an 87% higher CO2 adsorption capacity than bulk mica. The nanosheets' high specific surface area and porosity enable effective carbon capture.
Researchers at KAUST have developed a simple technique to create highly porous organic polymers, known as poly(aryl thioether), for applications in photocatalysis and optoelectronics. The material exhibits high surface area and tunable porosity, making it suitable for removing organic micropollutants and toxic mercury ions from water.
Researchers at Pusan National University have developed a new adsorbent that utilizes problematic protons in acidic wastewater to enhance the removal of radioactive cesium ions. The adsorbent, potassium calcium thiostannate, shows improved capacity under strongly acidic conditions.