Articles tagged with Transition Metals
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Researchers at the University of Illinois Urbana-Champaign have developed a new method for synthesizing thermally stable Ni(I) compounds that opens new avenues for building complex molecules. The new catalysts exhibit rapid ligand substitution, exceptional performance in key reactions, and chemo-selectivity.
Researchers at Max Planck Institute present efficient and low-CO2 process to extract copper, nickel, and cobalt from deep-sea ore nodules. The method generates significantly less waste and deforestation compared to traditional land-based mining.
Researchers from Cranfield University discovered that ancient copper smelters at a 3000-year-old site in southern Georgia were using iron oxide as a flux to increase copper yield. This finding supports the theory that iron was invented by copper metalworkers, who experimented with iron-bearing materials in a metallurgical furnace.
Researchers confirm nickel-rich metallic alloys in diamonds from South Africa's Voorspoed mine, revealing a 'redox-freezing' reaction between oxidized melts and reduced mantle rock. The study provides new insights into mantle dynamics and the formation of kimberlites, ocean island basalts, and volcanic magmas.
Engineers at RMIT University have developed a new low-cost approach to creating 3D-printed titanium alloys, which are about a third cheaper than standard alloys. The new alloy has improved strength and performance compared to traditional 3D-printed titanium alloys.
A team of Penn State researchers has discovered a fundamental reaction in transition metal chemistry that can proceed through a different order of events, achieving the same outcome. This finding raises questions about whether this new pathway has been occurring all along and potentially opens up new avenues for chemical design.
Researchers from UK and Canada will study ways to reduce mining's environmental footprint and enhance efficiency across critical mineral value chains. The project aims to develop new geological models and exploration tools for rare earth element deposits, aiming to diversify the supply chain and ensure high environmental standards.
New research from Tulane University finds that global riverine mercury pollution has more than doubled since the pre-industrial era, with primary drivers including wastewater discharge, soil erosion, and industrial activities. This increase poses significant health risks to humans and wildlife through consumption of contaminated fish.
Scientists from the University of Göttingen have made a groundbreaking discovery, finding ruthenium in volcanic rocks on the islands of Hawaii. The finding suggests that material from the Earth's core is leaking into the mantle above, challenging previous assumptions about the planet's internal dynamics.
Researchers developed atomically dispersed barium hydride catalysts for the synthesis of deuterated alkylarenes, showcasing high turnover frequencies and regioselectivity. The catalyst's efficiency surpasses both homogeneous and heterogeneous counterparts, with applications in tritium labeling.
Researchers at Tohoku University developed a surface reconstruction pathway to produce durable non-noble metal-based cathodes for efficient hydrogen evolution reaction (HER) performance, paving the way for affordable commercial production.
A comprehensive review article highlights emerging strategies that enable environmentally benign coupling reactions, reducing reliance on rare metals and lowering energy consumption. The hypervalent iodine approach facilitates selective bond formation with high functional group tolerance and broad substrate scope.
The study identifies a new area where a correction for the self-interaction error breaks down, allowing researchers to pinpoint flaws and develop solutions. By refining DFT, scientists can design better catalysts, leading to improvements in fields such as food production and technology.
Researchers at TU Wien discovered a new energy band that remains connected by an 'umbilical cord' when one allowed energy range splits into two separate bands. This phenomenon is bound to occur in materials with large electron interaction, opening up a new perspective on technologically highly interesting classes of materials.
Researchers are using cutting-edge technologies like AI, machine learning, and geophysical techniques to improve mine planning, predict slope behavior, and prioritize worker safety. The goal is to fundamentally change how mines are planned and operated, making them more sustainable and productive.
Researchers at ESRF found a second demethylation pathway for toxic methylmercury in Emperor penguins, involving the formation of a Hg-dithiolate complex. This new mechanism reduces toxicological consequences as long as there is sufficient selenium.
Researchers developed Virtual Ligand-Assisted Optimization to enhance ligand design and effectiveness in chemical reactions. The approach analyzes ligands through computer simulations, allowing for quick testing of different designs.
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.
A team of scientists leveraged machine learning to find promising compositions for sodium-ion batteries, achieving exceptional energy density. The study trained a model on a database of 100 samples to predict the optimal ratio of elements needed to balance properties like operating voltage and capacity retention.
The University of Texas at Arlington's Junha Jeon is developing transition metal-free cross-coupling technologies using arynes to deliver medications safely and effectively. This project aims to improve the production of drugs, particularly for cancer treatment, by reducing impurities left behind by metals.
Researchers have developed a novel technique to produce high-quality transition metal telluride nanosheets using chemical solutions, overcoming the challenges of scalability and toxicity. The technique enables the mass production of these ultra-thin materials with potential applications in electronics, energy storage, and sensing.
Scientists have created a new molecular system based on manganese that can oxidize various organic substrates and emit NIR-II light after excitation. The complex has two different photoactive states, one of which is extremely oxidizing and exists only briefly, while the other is moderately oxidizing and longer-lived.
Scientists have found that deposits deep under the ocean floor reveal a way to measure ocean oxygen levels and their connections with carbon dioxide during the last ice age. This study could improve predictions of how oceans will respond to global warming.
Researchers from Osaka University have developed an operationally simple way to synthesize the intricate beta-lactam scaffold characteristic of beta-lactam antibiotics. The new catalytic system generates Fischer-carbene complexes in small quantities, eliminating toxic chromium waste and requiring only a small amount of catalyst.
Researchers investigate grain size and temperature effects on Ti deformation at extremely low temperatures, finding that cryogenic temperatures trigger deformation twinning, boosting strength and ductility. The study proposes a modified Hall-Petch relationship to explain strengthening mechanisms at cryogenic temperatures.
A research team at Osaka University has found a way to synthesize alkylamines in a sustainable and cost-effective manner, using a novel catalyst system that produces only water as a byproduct.
A computational method called Disordered Enthalpy-Entropy Descriptor (DEED) predicts the synthesizability of 900 new ceramic materials. The results demonstrate enhanced stability and properties, suitable for applications such as electronics, wear-resistant coatings, and thermoelectrics.
Researchers at Xi'an Jiaotong-Liverpool University have developed a sensitive and robust pH sensor that can detect pH variation in just a few microliters of samples. The new sensor uses novel materials and methods to overcome the current method's limitations, which are not sensitive enough or fragile for commercial-scale use.
Researchers have developed a dinuclear ruthenium complex that efficiently reduces CO2 to carbon monoxide with over 99% selectivity. The catalyst's self-photosensitizing properties enhance its stability under reaction conditions, allowing it to drive the CO2 reduction process even at low CO2 concentrations.
Researchers at Chalmers University of Technology have developed a new method for recycling metals from spent electric car batteries using oxalic acid. The method allows for the recovery of 100% of aluminum and 98% of lithium, minimizing waste and utilizing an environmentally friendly ingredient.
Researchers found that changing the stacking order of layers in transition metal dichalcogenide (TMD) semiconductors creates new optoelectronic devices with tailor-made properties. The study reveals dark excitons exclusively located in the top layer, which can be utilized for optical power switches in solar panels.
Zeolite-encapsulated metal catalysts show improved hydrogen-related catalytic reactions due to confinement effect, reducing sintering and leaching. Advanced characterization techniques are used to study fine structure of metal sites, enabling better understanding of catalytic performance.
Scientists have discovered a method for maintaining valley polarization at room temperature using transition metal dichalcogenides (TMDs) and chiral lead halide perovskites. This breakthrough could lead to the development of devices that store and process information in novel ways without the need for ultra-low temperatures.
Researchers discovered bimetallic tartrate complexes with unique structures, formed by insufficient ligand, leading to improved sensor characteristics for microbiosensors. The study showcases the potential of laser-induced chemical liquid phase deposition for creating nanostructures with various applications.
Researchers at Tohoku University have developed a promising new material, niobium telluride (NbTe4), for phase change memory technology. The material exhibits an ultra-low melting point of approximately 447°C and high thermal stability, making it ideal for applications in the automotive industry.
A Rensselaer researcher has used artificial intelligence to discover novel van der Waals (vdW) magnets with large magnetic moments. These two-dimensional vdW magnets have the potential to advance science and technology in data storage, spintronics, and quantum computing.
Scientists at the Max Planck Institute successfully induced high-temperature ferromagnetism in YTiO3 by applying laser pulses, raising the transition temperature to triple its original value. This breakthrough discovery opens new avenues for exploring and manipulating magnetic properties of materials.
Researchers developed a chemical scissors-mediated structural editing strategy to regulate the structure and elemental composition of MAX phases/MXenes. This approach enables the creation of novel MAX phase and MXene materials with improved functional applications.
Researchers from Tokyo Metropolitan University have successfully threaded indium atoms into bundles of transition metal chalcogenide nanofibers, creating a unique nanostructure. The resulting metallic nanowires exhibit properties suitable for flexible wiring in nanocircuitry.
Researchers at Nagoya University have uncovered the mechanism behind ruthenium phosphide's transition from metal to insulator, revealing a unique crystal structure and molecular bonding. This discovery could lead to the development of faster responding sensors and smart windows that change light transmittance depending on temperature.
Researchers at Hokkaido University have developed a simple radical-based reaction to create unsymmetric variants of molecular compounds used in transition metal catalysts. This method opens up new avenues for designing catalysts and utilizes abundant ethylene feedstock.
Scientists have created a novel, noble-metal-free catalyst for producing hydrogen from water, which could lower costs and increase sustainability. The high-entropy alloy's remarkable performance and corrosion resistance were demonstrated in practical experiments.
Researchers developed an electrochemical technique to recycle highly valuable homogeneous catalysts, extending their life cycle. The method uses an electrical field to separate catalysts from mixtures and bind them to a surface, allowing for reuse and reducing energy consumption.
Researchers at Institute of Physics, Chinese Academy of Sciences have discovered new hafnium polyhydrides exhibiting superconductivity above 80K, a temperature threshold previously unattained by any 5d transition metal hydride. The study reveals these compounds display high critical fields and Ginzburg-Landau superconducting coherent l...
Scientists develop a method to produce atomically thin seams of light using in-plane heterostructures, enabling customizable strain and circularly polarized light. This technology has the potential to create efficient and chiral electroluminescence for applications in quantum optoelectronics.
Researchers at the University of Freiburg have successfully synthesized the cationic low-valent aluminum complex [Al(AlCp*)3]+, which exhibits ambiphilic reactivity. This breakthrough brings us closer to developing catalysts using abundant and earth-abundant metal like aluminum, potentially replacing expensive transition metals.
Researchers at KAUST have found that molybdenum plays a central role in electrochemical hydride transfer, a process for producing valuable chemicals or carbon-free fuels. The discovery could enable more sustainable production of sustainable fuels and chemicals.
Researchers have successfully isolated and characterized rhodium(VII), the third-highest oxidation state of an element, using advanced ion trap technology. This discovery has significant implications for understanding exotic transition metal oxides and potential applications in materials science.
Researchers discovered an electrolyte additive that protects nickel-rich layered cathodes from degradation and improves cycling performance. The additive forms a protective layer on the cathode, reducing transition metal loss and increasing energy density.
Researchers at Pusan National University have developed oxidation-resistant copper thin films, which could potentially replace gold in semiconductor devices. The films' flat surface reduces the growth of copper oxides on its surface, making them resistant to corrosion.
The review article discusses unconventional metal-based materials for electrocatalysis, including s-, d-, and f-block metals. It aims to accelerate research and development of novel, innovative catalyst materials for efficient green hydrogen production.
Researchers at Tokyo Metropolitan University have developed a scalable way to assemble nanowires into nanoribbons, a promising material for sophisticated electronic devices and catalysts. The method involves weaving together nanowires with chalcogen atoms and heat, resulting in atomically thin ribbons with unique properties.
A team of researchers from the University of Exeter has made a breakthrough in developing all-optical switching of magnetization using transition metals. The new technology enables energy-efficient nanoscale magnetic storage devices with unprecedented tunability and scalability.
Osaka University researchers developed an ultra-thin film of magnetite with superior crystallinity and conductive properties, overcoming challenges in spintronics technology. The discovery enables the film to undergo a temperature-dependent resistivity change, crucial for implementation in quantum computing technologies.
Researchers develop new epitaxial growth mechanism to achieve large-scale single-crystal WS2 monolayers, overcoming a crucial hurdle in replacing silicon with 2D materials. The technique enables uniform alignment of small crystals and leads to the successful growth of wafer-scale single-crystals of WS2, MoS2, WSe2, and MoSe2.
Researchers have developed bimetallic catalysts that enhance oil upgrading, decreasing heavy hydrocarbons and increasing light hydrocarbons. The test results showed positive influence on petroleum quality, transportation efficiency, and environmental impact.
Researchers developed a predictive tool using %V bur (min) to categorize phosphine structures as active or inactive in many experimental datasets. This advancement will facilitate organometallic chemistry and catalysis, enabling easier computation and prediction of phosphine reactivity.
Researchers at the University of Konstanz have discovered that MXenes can be switched repeatedly between a flat and a rippled shape by applying femtosecond laser pulses. This discovery could lead to improved energy storage capacity, enhanced catalytic or antibiotic activity, and new applications in sensing and active plasmonic devices.
Researchers found two distinct magnetic phase transitions in PbFeO3, including a continuous spin reorientation at 418K and a weak ferromagnetic transition at 600K, which could enable the development of faster and more efficient spintronic devices.
Researchers have successfully created a stable armchair-like hexazine N6 ring in tungsten hexanitride under high-pressure conditions. The compound, WN6, exhibits exceptional hardness and toughness, making it a promising candidate for high-energy-density materials.