Articles tagged with Redox Reactions
Researchers from Osaka University have improved the Faradaic efficiency of nitrogen reduction into ammonia at ambient pressure using trace water. This work helps optimize the sustainability of the Haber-Bosch reaction, which contributes substantially to global carbon emissions.
A team of researchers has discovered the role of amino acid sequences in regulating ATP production in photosynthetic organisms. The study found that specific domains of the γ subunit of chloroplast F0F1 are involved in redox regulation, crucial for photosynthesis.
Researchers at Washington University in St. Louis found that nanoplastics from polystyrene can produce reactive oxygen species when exposed to light, which can harm wildlife and the aquatic ecosystem. The study suggests that smaller particle sizes of nanoplastics may be more reactive and decompose faster under light.
Researchers have successfully segregated oppositely helical supramolecular polymers in a solution using audible sound, inducing surface vibrations and advection currents. This approach allows for the spatiotemporal control of chiral supramolecular systems, enabling the segregation of multiple aggregates.
Researchers discovered that the Memo1 protein binds copper ions, blocking toxic redox reactions that damage or kill cancer cells. The protein's interaction with copper also protects against metastasis formation in breast cancer cells. This finding opens up potential new treatments for cancer.
A KAUST-led team creates selective anode catalysts for stable and efficient hydrogen evolution in seawater splitting. The nanoreactors exhibited high electrocatalytic activity and stability due to their unique structure, isolating the electrolysis from side reactions.
Researchers in China designed a strategy to improve zinc-air battery performance by combining two transition metals, atomic iron and nickel, which deliver high electrocatalytic activity. The resulting rechargeable batteries achieve high peak power density, working rates, and long lifespan.
A team of scientists has designed a system that uses water, CO2, and sunlight to produce synthetic kerosene, which can power long-haul commercial flights. The design has been implemented in the field, and its efficiency is around 4%, with plans to improve it to over 15%.
Researchers discovered a mechanism by which plants stabilize protein molecules during folding, even in low-oxygen conditions. The study found that the redox potential of supporting proteins plays a critical role in disulfide bridge formation and protein folding.
The 24th International Conference on Oxidative Stress Reduction, Redox Homeostasis & Antioxidants, shed light on the latest redox field innovations and the future of redox medicine. Keynote speaker Prof. Helmut Sies discussed stringently selective modulation of enzymatic oxidant sources and sinks in redox nanomedicine.
Academic researchers will present newest discoveries on redox in aging, immunity, ocular disorders, and fertility. The conference highlights the mechanisms of redox control like Nrf2 signaling pathway.
A new approach to battery design uses a polysulfide-air redox flow battery with two membranes, overcoming main problems and opening up potential for large-scale energy storage. The dual membrane design enables the use of lower-cost materials, improving performance and reducing costs.
Researchers at ACS Sustainable Chemistry & Engineering have identified a less toxic dye called pigment red 254 (PR254) as a greener alternative to current anthraquinone dyes used in signal smokes. PR254 forms a red-colored smoke cloud more effectively and is thermally stable, making it suitable for use in heat-generating systems.
Researchers used AI to optimize multiple properties of flow batteries, finding molecules that store a lot of energy and remain stable. The study uses quantum chemistry-guided multiobjective Bayesian optimization to identify promising candidates.
A new process has been identified to accelerate the use of low-cost materials, transforming the energy sector with potential to replace silicone-based solar panels. The dynamic dimeric copper complexes offer a novel combination of fast charge transport and efficient redox mechanisms.
Scientists have developed a method to synthesize nanocrystals in live cells through space-time coupled synthesis, enabling the creation of super biosystems. This approach has been successfully applied to various cell types, including yeast, bacteria, and mammalian cells.
Researchers developed a new strategy to achieve efficient and stable CO2 electrolysis in solid oxide electrolysis cells. They found that redox cycle manipulations promoted the exsolution of high-density metal/perovskite interfaces, improving performance and stability.
Scientists from Tokyo University of Science and NIMS Japan have evaluated the irreversibility of LixWO3 thin films. They found that irreversible Li+ trapping and Li2WO4 formation are different processes, with proportions of 7.7% and 50.9%, respectively.
A new study from the University of Illinois at Urbana-Champaign introduces an electrochemical redox desalination process that removes up to 99% of excess salt from whey while refining over 98% of its valuable protein content. The process uses less energy and operates at a lower cost compared to conventional desalination systems.
A team of scientists has observed direct atomic evidence of the anionic redox mechanism in lithium-rich cathodes, which could lead to breakthroughs in battery technology. The discovery provides conclusive evidence for this mechanism, nearly doubling the energy storage capacity compared to conventional cathodes.
Researchers at the University of Liverpool have made a groundbreaking discovery in charge storage mechanisms for calcium-air batteries. The new finding, known as trapped interfacial redox, introduces a novel mechanism that can be harnessed to create highly sustainable battery technologies.
A team of researchers from the University of Freiburg has developed a non-aqueous All-Manganese Flow battery with a long cycle life, achieving an energy density roughly twice that of previous batteries. The new design uses sustainable manganese as its active material and has shown promising results for stationary energy storage.
Researchers from Skoltech developed a simple redox-active polyimide with promising features in various energy storage devices. The new material showed high specific capacities, relatively high redox potentials, and decent cycling stability.
A new class of molecules has been engineered to provide energy storage for aqueous organic redox flow batteries. The approach delivers a high energy efficiency even after four months of cycling at elevated temperatures.
Researchers at the University of Bayreuth have discovered the crucial importance of redox-active substances in aquatic ecosystems. They are able to degrade pollutants and influence large-scale reactions, making them a crux between hydrological fluctuations and ecosystem functions.
A recent X-ray study clarifies the reaction mechanism of lithium manganese oxide (Li2MnO3) and finds it suitable as a catalyst for high-energy electrode materials. The discovery paves the way for exploring alternative battery technologies, including lithium-air and lithium-carbon dioxide batteries.
A new polymer-based battery can charge in seconds, outperforming traditional lithium-ion batteries. It is also safer and has a lower environmental impact due to the use of nickel instead of cobalt.
Researchers at Skoltech have designed and synthesized new compounds that can serve as catholytes and anolytes for organic redox flow batteries, offering high cell voltage, solubility, and electrochemical properties. The materials have been tested for scalability and performance in large-scale energy storage applications.
Researchers have identified a new category of compounds called pyrazinacenes that can be reversibly oxidized and reduced. These compounds consist of connected rings of carbon, nitrogen, and hydrogen atoms and have the potential to support photoredox-based reactions in chemical synthesis.
Researchers have realized a reversible superoxide-peroxide conversion in a K-based high-capacity rechargeable sealed battery device, boosting cathode capacity to 300 mAh/g and achieving high energy efficiency. This breakthrough overcomes gaseous O2-related intrinsic defects and phase changes between gaseous O2 and solid Li/Na/KxO.
The SABATLE project examines the safety risks of redox flow technologies for humans and the environment, and aims to identify risk factors and improve battery design using the Safe-and-Sustainable-by-Design concept. Researchers will also investigate the toxicological effects of these technologies.
Researchers have found that reductive stress promotes protein aggregation and impaired neurogenesis in neuroblastoma cells. This suggests a new role for reductive stress in the onset and progression of neurodegenerative diseases, including Alzheimer's, Parkinson's, and Huntington's.
Scientists have created extremely stable fluorescent molecular switches that can be controlled electrochemically, using a particular redox active anion. These systems show large reversible fluorescence modulation and are soluble in many organic solvents, making them suitable for applications in biosensing, imaging, and drug delivery.
Chemists from the Center for Multidimensional Carbon Materials discovered how oxygen affects the synthesis of a novel MOF; copper 1,3,5-triamino-2,4,6-benznetriol metal-organic framework. Oxygen prevents ligands from reducing Cu ions to Cu metal, facilitating MOF synthesis.
Researchers at Linköping University have developed an organic redox flow battery with a water-based electrolyte, increasing the energy density. The battery uses conducting polymer PEDOT electrodes and quinone molecules, making it safe, cheap, and recyclable.
Researchers at Graz University of Technology have created a redox-active electrolyte material using vanillin, replacing ecologically harmful heavy metals or rare earths in liquid batteries. The technology is an important step towards sustainable energy storage and has potential applications in renewable energy expansion and grid relief.
Researchers at Friedrich Schiller University Jena have developed a new polymer electrolyte that improves the efficiency and heat-resistance of redox flow batteries. This breakthrough enables the use of renewable energy sources without significant losses or additional effort.
A team of Russian researchers has developed a new design for the membrane-electrode assembly (MEA) in vanadium redox flow batteries, reducing experimental costs and increasing power. The new design simplifies the laboratory testing process, making it more accessible to new research groups.
Researchers at the University of Münster used a new method to monitor plant metabolic processes in real-time, revealing key mechanisms in energy metabolism and their connection to environmental factors. The study provides new insights into plant responses to stressors like light, temperature, and pest infestation.
Scientists have developed a novel organocatalyst that can control radical reactions, enabling the synthesis of complex compounds. The catalyst, featuring an N-neopentyl group, promotes coupling reactions while suppressing side reactions, allowing for the synthesis of bulky molecules and pharmaceuticals.
Researchers introduce fluorescence protein sensors into live plants to visualize dynamic changes in NADPH level and NADH/NAD+ ratio in different cell types. This allows for the study of photosynthesis and photorespiration, revealing the close connection between subcellular compartments for efficient metabolism.
Researchers found that LATP ceramics degrade significantly in contact with water, losing up to 64% of their total ionic conductivity. The study highlights the importance of preserving initial performance through simple drying-and-vacuum treatments.
Researchers found that excessive antioxidants can lead to pathological changes in hearts, causing enlarged hearts and diastolic dysfunction. Chronic antioxidant consumption without knowing one's redox state might result in reductive stress, which can induce pathology and slowly damage the heart.
Researchers developed simple molecular reagents that can simultaneously target and modulate various pathogenic factors in Alzheimer's disease. The reagents displayed redox-dependent reactivities against free radicals, metal-free and metal-bound amyloid-beta, and led to chemical modifications that altered its aggregation.
A new catalyst has been developed that can convert ethane into ethylene with improved efficiency and reduced greenhouse gas emissions. The discovery could have a significant economic impact on the plastics industry and energy extraction operations.
Researchers are using high-efficiency mrixS to study oxygen atoms and metal states in battery electrodes. The technique helps detect chemical states, track electron movement, and measure degradation, leading to improved battery performance.
USC scientists have developed a new redox flow battery that stores electricity in solutions, sorts electrons, and releases power when needed. The technology uses iron sulfate and anthraquinone disulfonic acid (AQDS) to store electrochemical energy, with advantages over competitors in terms of cost, durability, and scalability.
The new tools, based on MRI principles, allow scientists to observe how next-generation batteries work and fail, enabling strategies to extend battery lifetimes. By charging batteries at lower voltages, they can significantly slow degradation, extending lifespan.
A Montana State University biotechnology researcher discovered a previously unknown tool that cells can use to protect their proteins from irreversible damage caused by redox reactions. This mechanism involves adding an extra sulfur atom onto existing sulfurs in protein molecules, allowing cells to recover and make new proteins.
Scientists will analyze 160 Tournaisian shale samples to understand uranium isotope behavior under varying redox conditions. The project aims to decipher Earth's oxygenation history using this tool.
The study reveals that electrochemical reactions between water and oxygen can control the physical properties of graphene and other two-dimensional materials. This discovery has significant implications for developing flexible displays, high-speed transistors, and next-generation batteries.
A new theory by Assistant Professor Kyle Smith predicts how fluid flow affects molecule reaction at porous electrode surfaces in redox flow batteries. The research enables prediction of mass transfer coefficients based on microscopic pore structure, enabling engineers to design optimal structures.
Researchers have developed protein-based batteries using synthetic polypeptides and polymers, which could provide a sustainable and safe energy storage solution. The new technology has shown promising results, with potential applications in low-energy requirement devices like biosensors.
Researchers developed nanomicrocell catalysts with integrated active sites, reducing energy barriers and improving catalytic properties. The catalyst system enhances transportation efficiency of electrons and charge carriers, opening a new window for advanced catalyst synthesis.
Researchers at TU Graz have made breakthroughs in super-battery research, finding ways to minimise the negative effects of singlet oxygen on redox mediators. They discovered a suitable quencher, DABCOnium, which transforms singlet oxygen into harmless triplet oxygen.
The review highlights the development of advanced nano-materials for electrochemical geno-sensors, showcasing their high surface area, biocompatibility, non-toxicity, and charge-sensitive conductance. These materials are used to detect chemical analytes with potential as a next-generation field-deployable analytical tool.
Scientists developed a strategy to transform 70% of carbon in ABE fermentation mixture to 4-heptanone with high selectivity using tin-doped ceria. The catalyst achieves excellent performance despite the presence of water, which is detrimental to most catalysts.
Researchers have developed a synthetic enzyme that reduces sulfite to sulfide, a notoriously complex multistep chemical reaction. The new enzyme's design focused on functionality rather than structure, accounting for previously thought secondary interactions that proved crucial to its activity.
Research in mice suggests that antibiotics alter the redox potential of the gut environment, leading to changes in microbial communities. The study proposes new ecological models for how antibiotics reshape the gut microbiome and could inform the development of drugs to treat microbial disorders or prevent antibiotic-associated infecti...
Researchers from Dalian University of Technology have developed a new material that can exhibit switchable functions through successive solid transformations and electron transfer. The material's properties, including magnetic, electric, and optical behavior, can be controlled using external stimuli such as light or temperature.