Tuning Electronic Structure of Tungsten Oxide for Hydrogen Electrolyte Reaction

Structure of tungsten oxide nanoblocks image

Researchers at the Shanghai Institute of Microsystems and Information Technology (SIMIT), Chinese Academy of Sciences (CAS) have demonstrated that doping tungsten oxide (WO3) catalysts with appropriate cations can change the interfacial structure, surface chemical state, and bandgap values, thus improving the performance of the basic hydrogen electrolyte reaction (HER). In the experiments, cation (Ni, Co, and Fe) doped WO3 catalysts were synthesized on nickel foam. The Co-doped catalysts (Co WO) exhibited remarkable HER activity.

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Electrochemical Energy Devices Constructed with Tungsten Oxide-Based Nanomaterials

Tungsten oxide-based nanomaterials in building electrochemical energy devices image

Tungsten oxide-based nanomaterials have attracted a lot of attention for their use in building various electrochemical energy devices. In particular, electrochromic devices and optical change devices have been intensively investigated in terms of energy conservation.

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Tungsten Oxide Polymorphs and Applications

Tungsten oxide materials for optoelectronic applications image

Considerable interest in tungsten oxide polymorphs (WO3-x) nanomaterials has been generated due to their abundance in nature, easy availability, high stability, non-recombination, and chemical diversity, and many advances have been made from traditional catalysts and electronics to emerging artificial intelligence. A recent study from Qingdao University presents the latest progress of WO3-x polycrystals and their multifunctional applications.

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Oxidation Protection of Tungsten Alloys in Nuclear Fusion Applications

Interaction of plasma with irradiated tungsten and tungsten alloys image

A recent study conducted by the Anhui University of Technology has proposed new measures for the oxidation protection of tungsten alloys in nuclear fusion applications. As a plasma guide material (PFM), tungsten is persistently used in nuclear fusion reactors. However, it has poor oxidation resistance at high temperatures. When a reactor de-cooling accident occurs, tungsten is rapidly oxidized and volatilized due to air entering the vacuum chamber, which may cause a catastrophic nuclear leakage accident.

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Methods for Improving Tungsten Ductility

Stress-strain curves of tungsten rolled at different temperatures image

A study conducted by researchers at the University of Utah in Salt Lake City, Utah, USA, describes ways to improve tungsten ductility. It is generally accepted that pure tungsten and tungsten alloys with minor alloy additions are brittle at room temperature and have high ductile-to-brittle transition temperatures (DBTT). Improving the ductility of tungsten is important in generating the range of tungsten manufacturing and applications.

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Effect of Tungstate on Nitrate Reduction by Pyrobaculum aerophilum

Pyrobaculum aerophilum image

Researchers at the University of California have conducted a study on the effect of tungstate on nitrate reduction in Pyrobaculum aerophilum, a hyperthermophilic archaeon that can respire both at low levels of oxygen and anaerobically with nitrate as the electron acceptor. Under anaerobic growth conditions, nitrate is reduced to molecular nitrogen via the denitrification pathway.

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Molybdenum Oxide Nanoparticle Aggregates Grown by Chemical Vapor Transport

FE-SEM images of the molybdenum oxide nanoparticle aggregates image

A study conducted by researchers at Daegu Catholic University in South Korea introduces advanced methods that combine chemical vapor transport (CVT) with quenching effects to create molybdenum oxide nanoparticle aggregates arrays consisting of fine nanoparticles (NPs) in a layered structure, grown vertically on individual carbon fibers of a carbon fiber paper (CFP) substrate.

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Molybdenum-Based Sodium Ion Batteries Development

sodium ion batteries are coming image

A recent study carried out by Yu Jiang et al at Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou, China has investigated the Molybdenum-based materials for sodium ion batteries (SIBs). SIBs are considered to be one of the most promising candidates for energy storage required for renewable energy sources. The main difficulty is finding a suitable anode material, and molybdenum-based materials are expected to solve this problem.

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Electron Flow Versus Magnetic Flux in Monolayer Molybdenum Disulfide Quantum Dot

Molybdenum disulfide quantum dots image

Researchers from Morocco have investigated the Dirac electron scattering problem in quantum dots of monolayer molybdenum disulfide (MoS2) quantum dots subject to magnetic flux. Analytical expressions for the eigenstates, scattering coefficients, scattering efficiency, and radial component of the reflected electron flow were developed by solving the Dirac equation.

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Molybdenum Doped Bilayer Photoanode Nanotubes Enhance Photoelectrochemical Water Splitting

the theory of the photoelectrochemical image

Researchers from the University of Pittsburgh recently enhanced the photoelectrochemical (PEC) water splitting capability of bilayer photoanode nanotubes through simple but effective molybdenum (Mo) doping method.

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