Articles tagged with Adsorption
Researchers developed a sawdust-based adsorbent that can remove methylene blue dye and real potato processing wastewater. The material achieved high adsorption capacities and was effective in both batch and continuous column tests.
A new review compares conventional and microwave-assisted pyrolysis, showing how microwave heating can tailor biochar for removing metals, dyes, pharmaceuticals, and microplastics. Microwave-derived biochars often show higher surface area, stronger mesoporosity, and greater retention of oxygen-containing functional groups.
Researchers have designed a clay material that can absorb and retain ethylene gas, slowing down the ripening process of fruits and vegetables. This innovation has the potential to reduce food waste and improve fruit flavor by allowing for later harvesting in the ripening process.
Researchers at TU Wien have shown that water molecules' structures impact charged particles in electrochemistry. The team found that ions with stronger effects on surrounding water create more order, leading to lower entropy and reduced attachment to surfaces.
Emerging microwave-based techniques significantly enhance biochar's ability to remove contaminants from water and soil while improving energy efficiency. Biochar has gained attention as a sustainable solution for managing agricultural residues, food waste, and other organic by-products.
Researchers have developed a calcium-modified biochar that more effectively captures organic phosphorus, offering a solution to reduce nutrient pollution in water systems. The study reveals how molecular structure influences phosphorus adsorption, providing a clearer roadmap for designing more effective materials.
A new study challenges the assumption that only small pores in biochar capture carbon dioxide, finding that larger pores significantly increase carbon capture at higher temperatures. The research suggests optimizing the full pore hierarchy of biochar could improve its performance as a carbon capture material.
A novel engineered biochar has been developed to simultaneously immobilize arsenic and cadmium in contaminated water and agricultural soils. The sulfur-ferrihydrite-modified biochar achieves high adsorption capacities for both pollutants, transforming them into more stable residual fractions.
Researchers have developed new polymer-based materials that can capture short-chain PFAS molecules, which are difficult to remove from drinking water. The polymers use cooperative binding microenvironments to anchor the charged PFAS headgroup and stabilize its fluorinated tail.
Nanobiochar is an engineered carbon material derived from biomass with increased surface area, reactivity, and environmental functionality. It enhances soil quality, binds pollutants, retains nutrients, and supports beneficial microbial communities.
Researchers review how torrefaction converts biomass into versatile precursor for advanced functional materials. The process improves durability, electrical properties, and surface chemistry, enabling specific technological uses.
Researchers developed a fast and energy-efficient way to produce advanced carbon materials capable of capturing carbon dioxide, dramatically reducing production time while improving adsorption performance. The new material demonstrates exceptional ability to capture and selectively separate carbon dioxide from gas mixtures.
Researchers develop calcium hydroxide modified biochar from discarded Camellia oleifera shells to remove ammonium and phosphate from water, showcasing strong adsorption performance. The material demonstrates potential for practical agricultural and industrial wastewater treatment, maintaining strong performance in real-world tests.
Scientists develop advanced biochar adsorbent using orange peel waste, achieving high adsorption capacity and recyclability for removing toxic dyes from wastewater. The material's unique structure provides multiple mechanisms for binding dye molecules, offering a promising solution to global challenges.
A new catalyst enables efficient and stable electrosynthesis of ethylamine at industrial scale, overcoming long-standing challenges in selectivity loss and instability. The developed method supports continuous energy-efficient production of EA using electricity and water.
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 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 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 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.