Articles tagged with Organic Solvents
Researchers at the University of Innsbruck used a sophisticated measurement method to create a chemical fingerprint of urban VOC emission sources. The study found that emissions from cosmetics, detergents, and food preparation contribute significantly to the total VOC burden, with some compounds leaving characteristic 'scent' in the air.
Researchers developed a new gas-solid reaction method to fabricate high-quality perovskite films, achieving faster response times and improved stability in photodetectors. The non-solvent approach provides full coverage of the film and eliminates damage from organic solvents.
Researchers at Osaka University have created a radical reaction that converts methane into methanol and formic acid using a clean, low-temperature process. The process achieves this goal without the need for high temperatures or pressures, converting over 99% of methane into the target products.
Scientists developed a novel material platform for TTA photon upconversion using cheaper, less toxic, and thermally stable DESs. This achievement boosts the conversion of low-energy photons into high-energy photons, increasing solar energy utilization efficiency.
Researchers have developed a sustainable 3D printing process using polyethylene-2,5-furandicarboxylate (PEF), a polymer made from cellulose. The new biobased polymer allows for high-quality objects with good solvent resistance and thermal stability.
French researchers have developed a new green solvent that can trap harmful volatile organic compounds from the air. The non-flammable mixture, made from choline salt and urea, was found to dissolve up to 500 times more chemicals than water at 30°C.
Researchers at Georgia Institute of Technology have developed water-based electrochromic film inks, making them safer and more accessible for various industries. The new method eliminates the use of flammable solvents and toxic fumes associated with previous inks.
Dr Jason Camp is investigating a non-toxic and environmentally sustainable solvent produced from waste cellulose to produce a range of medicines. His research has shown promising results using Cyrene as a solvent in the synthesis of ureas, chemical compounds important in pharmaceuticals and agrochemicals.
Researchers developed polypeptide catalysts that function efficiently in water, which could reduce the use of organic solvents and toxic waste in chemical processes. The discovery has potential applications in pharmaceutical, agrochemical, and food industries.
Lignin can be efficiently separated from sawdust using eutectic solvents, retaining its natural chemical structure. This breakthrough enables various industrial applications, including forest, food processing, pharmaceutical and mining industries.
Researchers extracted polycyclic aromatic hydrocarbons (PAHs) from soil using an espresso machine, a process that takes only 11 seconds. The results were comparable to those obtained with certified techniques, but the new process was significantly less expensive and faster.
Researchers at Northwestern University have developed a new process to exfoliate atomically thin phosphorene flakes with high yield and minimal degradation. The method uses deoxygenated water as an environmentally benign solvent, resulting in superior material quality and scalable fabrication.
Researchers have created a safer and more efficient water-based system for synthesizing organic compounds, reducing reliance on volatile organic solvents and improving environmental sustainability. The new process also produces higher yields of product and allows for easy separation and extraction of the final compound.
The UCSB organic chemistry team, led by Bruce Lipshutz, developed an ecofriendly approach to the Suzuki-Miyaura cross-coupling reaction, significantly reducing palladium requirements. By using iron salt as a palladium substitute, they eliminated heat input and organic solvents, creating a more sustainable process.
Researchers have developed an electrospray technique to improve Langmuir-Blodgett assembly, reducing the need for toxic organic solvents and increasing efficiency. This approach enables the creation of well-dispersed nanoparticle monolayers with precise control over packing density.
Research found associations between exposure to certain organic solvents and an increased risk of heart defects in newborns. The study, published in Occupational and Environmental Medicine, suggests that workplace exposure to organic solvents may be a potential risk factor for several types of congenital heart defects at birth.
Lawrence Livermore researchers have developed a nanosensor that relies on semiconductor nanowires to detect various molecules quickly and selectively responds to different types of solvent molecules. The device is simple, highly sensitive and could be the first step in making an easily deployable chemical sensor for the battlefield.
Researchers at Georgia Tech have developed a new organic solvent process that selectively dissolves noble metals like platinum, palladium, and gold. This ability to preferentially dissolve these metals creates a customized system with high control over the process.
IBN researchers have developed a simple, room-temperature process to synthesize nanoparticles inexpensively. The new chemical synthesis uses an aqueous solution and an organic solvent, allowing metal ions to be extracted from water without producing toxic chemicals.
The US Environmental Protection Agency announced the 2009 Presidential Green Chemistry Challenge Award winners, recognizing research that can make significant contributions to pollution prevention. The award winners developed innovative methods for producing greener chemicals, fuels, and materials.
Engineers at the University of Texas at Austin have developed a method to disperse chemically modified graphene in a wide variety of organic solvents. This breakthrough enables the use of graphene in various materials and applications, including conductive films, polymer composites, and energy storage devices.
Scientists at the University of Illinois have developed a novel self-healing system using a non-toxic food additive to restore damaged polymers. The new repair process, which mimics human wound healing, has achieved 100% healing efficiency in tests.
LLNL scientists have successfully added unique green solvents to an explosive called TATB, improving crystal quality and chemical purity. This breakthrough aims to create safer explosives with reduced violent reactions.
Researchers have achieved a record light conversion efficiency of 8.2% in solvent-free dye-sensitized solar cells, paving the way for large-scale outdoor applications. The development of an electrolyte mixture made from three solid salts replaces volatile organic solvents, making it possible to produce lightweight and inexpensive flexi...
Researchers have created ultrathin polymer films made of nanocrystals using a novel production technique. The method, led by Stefan Mecking, produces films with a thickness of 50 nm using individual prefabricated nanocrystal building blocks.
Researchers have developed a new type of solar cell that uses indoline dye and ionic liquid to improve efficiency. The cells achieve an energy conversion yield of 7.2%, a record for this type of cell, and could potentially lead to more affordable renewable energy.
Changes in gene expression may cause people to develop a tolerance to inhalants by altering the response of fruit flies to future doses through epigenetic modifications. The research lays groundwork for understanding mechanisms of inhalant addiction and developing treatment methods.
Brookhaven chemists aim to replicate natural photosynthesis to produce fuels like methanol, methane, and hydrogen from water and carbon dioxide using renewable solar energy. They are investigating various catalysts, including ruthenium-based complexes, to mimic the natural process of oxygen production from water.
A study by the University of Alberta links paternal airborne exposure to organic solvents used in painting, thinning and cleaning to increased risk of low birth weight and congenital birth defects. Workers exposed to these chemicals were up to six times more likely to father malformed babies.
NIST launches ILThermo, a free online database of physical properties for ionic liquids, including thermodynamic, transport, and structural information. The database includes over 200 ions and 300 ionic liquids with calculated uncertainties, facilitating comparison of measurements.
Rutgers chemists invent variant of room temperature ionic liquids to overcome viscosity barrier, enabling safer and more efficient industrial processes. The new chemicals could be used in industries such as chemical manufacturing, electroplating, and radioactive waste handling.
Scientists at NIST report that flow properties of alternative solvents called ionic liquids are extremely sensitive to tiny amounts of water. The finding could help design new industrial processes that are more efficient and environmentally friendly.
A study of 32 children found that those whose mothers were occupationally exposed to organic solvents during pregnancy scored lower in intellectual, language, motor, and neurobehavioral functioning. The children also showed reduced ability in recalling sentences despite normal global scores.
A study of 32 pregnant women exposed to organic solvents at work found that their children had significantly lower verbal cognitive functioning and greater inattention, highlighting the need for reduced exposure during pregnancy.
Researchers developed nanoparticles that can target and break down chlorinated organic solvents, such as trichloroethylene, in groundwater. The particles can move easily through soil pores and reach underground pockets of contamination, reducing cleanup costs and improving effectiveness.
A study of over 1200 Canadian manual workers found that moderate occupational solvent exposure was associated with a significant increase in low sperm counts. Painters, decorators, and builders were at the highest risk, while glycol ethers are suspected to be hazardous to male fertility
Researchers at Virginia Tech have synthesized a novel acrylic blend using water instead of organic solvents, allowing for the production of polymers without solvent use. The new blend is made possible by introducing carbohydrates to solubilize hydrophobic monomers, enabling their formation in water.
Near-critical water, which can dissolve both salts and non-polar organic compounds like oils, is being studied as a replacement solvent in various chemical processes. This could lead to the elimination of hazardous solvents and salt byproducts, reducing environmental impact.
Researchers at University of Notre Dame and Pittsburgh have successfully developed a new process to separate problematic chemicals from ionic liquids using supercritical carbon dioxide. This environmentally benign solvent eliminates the need for distillation, which is impractical with low-vapor-pressure compounds, and can effectively r...
Researchers at UNC-CH have invented a process using carbon dioxide to separate liquids, promising a more environmentally friendly alternative to toxic solvents. The new method, described in Nature, has shown success in removing dye from water and could be applied in industries releasing vast amounts of waste water into the environment.
Researchers have found a new technique to reduce organic and halogenated solvents used in industries, replacing them with environmentally benign carbon dioxide. This breakthrough could decrease waste by up to 100-fold and has implications for society.