The Cu K-edge XAFS suggest that the Cu(II) surface complexes are Jahn-Teller distorted with an equatorial plane of oxygens at approximately 1.95 Angstrom. At pH 5, no 2nd coordination shell is observed. However, at pH 8 there is a well-defined 2nd shell which is best modeled with two ...
According to the Pt-marker test of TiAl-5wt%Nb, oxides were formed mainly by inward diffusion of oxygen. Upon thermal cyclic oxidation at 900 °C, it was shown that the addition of Cr or Nb improved the adherence of oxide scale to the substrate. 展开 ...
Electrocatalytic CO2 reduction at near-ambient temperatures requires a complex inventory of protons, hydroxyls, carbonate ions and alkali-metal ions at the cathode and anode to be managed, necessitating the use of ion-selective membranes to regulate pH. Anion-exchange membranes provide an alkaline ...
However, radical recombination reactions are often susceptible to undergo irreversible reactions, for example with molecular oxygen, moisture, and other surrounding molecules, which is a concern in the context of dynamic covalent chemistry20. In particular when exposed to ambient conditions for a long ...
Preparation of Co-Fe electrodeposits and their performance in relation to oxygen evolution in 40wt% KOH at 70°CCo/Fe deposits were obtained on nickel substrate in a bath containing dissolved cobalt sulphate, iron nitrate and ammonium citrate at pH 9.8. The composition and the morphology of the...
摘要: Solubility of oxygen was investigated experimentally in Fe-rich portions of Fe-FeO and Fe-O-S systems at HP and HT (15 and 23 GPa, 1500°-2000°C). Our results indicate an increase of oxygen solubility with increasing pressure at eutectic conditions....
Development of Fuel Cell System Control for Sub-Zero Ambient Conditions To enable start-up in sub-zero temperatures under high water content conditions, oxygen diffusion through the cell was enhanced and a 3D fine mesh ... T Maruo,M Toida,T Ogawa,... 被引量: 0发表: 2017年 Titanium sub...
求翻译:cured at 1501–2001C for 410 h, and at least 8 wt% oxygen是什么意思?待解决 悬赏分:1 - 离问题结束还有 cured at 1501–2001C for 410 h, and at least 8 wt% oxygen问题补充:匿名 2013-05-23 12:21:38 在1501-2001C治愈410 H,和至少8%的氧气 匿名 2013-05-23 12:23:18 ...
(P3M) method55. Analysis was done with the MDAnalysis python library56. The timestep was 1 fs. Atom colouring in all figures is illustrated as follows: SiO2substrate hydrogen, oxygen and silicon in grey; OTS carbon, oxygen and silicon in green, and hydrogen in white; water hydrogen in ...
Even a low loading (0.2 wt%) of ultralarge, ultrathin, flexible subnanosheets was found to effectively strengthen polymers and hinder the propagation of breakdown paths. These subnanosheets can also trap charges through grafted surfactant molecules and polyoxometalate cluster backbones. An ...