The present invention relates to oxygen sensors without connections or metal parts, based on the variation of their luminescence with the concentration of molecular oxygen, for application in the aeronautical industry, namely in aircraft fuel tanks. The sensors consist of a solid polymer matrix ...
Oxygen evolution reaction (OER) suffers from four-electron transfer, sluggish kinetics and high energy requirements, limiting the development of new energy technologies such as hydrogen production from water electrolysis. In recent years, non-
A combined numerical and experimental study of the transport phenomena during solidification processing of metal matrix composite functionally graded mater... J Gao 被引量: 5发表: 2000年 New insight into cofactor-free oxygenation from combined experimental and computational approaches Molecular oxygen (O2...
Metal have 1 to 3 electrons in the outer shell whereas non-metal have 4 to 8 electrons. Metal oxide is formed when a metal reacts with oxygen and forms electrovalent or ionic bonds, e whereas non-metals form non-metal oxides when they react with oxygen and mostly form covalent bonds. ...
Likewise, in the case of FexOy, the preservation of the bcc-Fe structure allows for its homogenous reaction with oxygen, implying the subsequent (dis)charge reactions of the Fe series are also diffusion-controlled, mechanistically similar to displacement, however, with O2− now the displaced ...
We demonstrate the translation of a low-cost, non-precious metal cobalt phosphide (CoP) catalyst from 1 cm2 lab-scale experiments to a commercial-scale 86 cm2 polymer electrolyte membrane (PEM) electrolyser. A two-step bulk synthesis was adopted to produce CoP on a high-surface-area ca...
Some example of non – metals are carbon,oxygen, Sulphur, phosphorous, and many more. Uses of Non Metals Many non-metals like chlorine, Sulphur, iodine are very useful for medicinal purposes. Non-metal like oxygen is very essential for our life forrespiration. ...
Electrocatalysts: Bottom-Up Construction of Triazine-Based Frameworks as Metal-Free Electrocatalysts for Oxygen Reduction Reaction (Adv. Mater. 20/2015) Liu, et al., Electrocatalysts: bottom-up construction of triazine-based frameworks as metal-free electrocatalysts for oxygen reduction reaction (Adv. ...
(OH)2electrode. Indeed, the carbonyl oxygen in urea is the most nucleophilic atom. The OVsin NiOOH electrode expose the coordinately unsaturated metal sites, as an electrophilic center, to directly interact with carbonyl oxygen of urea to trigger a nucleophile attack. Therefore, the FTIR results...
Replacement of noble metals in catalysts for cathodic oxygen reduction reaction with transition metals mostly create active sites based on a composite of nitrogen-coordinated transition metal in close concert with non-nitrogen-coordinated carbon-embedded metal atom clusters. Here we report a non-platinum...