The intense reactivity of ozone is sometimes explained by suggesting that one of the three oxygen atoms is in an “atomic” state; on reacting, this atom is dissociated from the O3molecule, leaving molecular oxygen. The molecular species, O2, is not especially reactive at normal (ambient) temp...
We have introduced an oxygen atom and a carbon-carbon double bond with a trans-configuration (E) into the terminal alkyl chain of a wide variety of liquid ... SM Kelley,A Germann,M Schadt - 《Liquid Crystals》 被引量: 51发表: 1994年 Living free radical initiators based on alkylperoxydi...
Atom-resolved imaging of ordered defect superstructures at individual grain boundaries. Nature. 479, 380–383 (2011). ADS CAS PubMed Google Scholar Doria, S. et al. Nanoscale mapping of oxygen vacancy kinetics in nanocrystalline Samarium doped ceria thin films. Appl. Phys. Lett. 103, 171605 ...
Here (O2)tis the mass (kg) of O2produced over a given timet(yr),Qizis the mass (g) of the isotope,Eais the average energy (eV) released from the decay of one atom;G(O2) is the radiation chemical yield of molecules per 100 eV of the radiation energy;MO2is the O2molecular mass...
1. The oxygen atom on the surface of the semiconductor catalysts escaped from the calcination at high temperature, resulting in oxygen vacancy defects. Chen et al. [61] successfully prepared N-doped TiO2 nanoparticles for removing elemental mercury by calcination at 400℃. XPS and UV–vis DRS ...
Such an equilibrium would be reached if the electron–atom collisional excitation rates are much greater than the radiative decay rates. This condition is most easily met by highly excited levels close to the ionization limit which tend to have long radiative lifetimes. Furthermore, since energy ...
A fraction of the interstellar neutral atoms crosses the interface between the solar wind and the ionized component of the local interstellar medium, and enters the heliosphere. The number of penetrating atoms depends on both the interface structure and the strength of the atom-plasma interaction, ...
The temperature was set to 298 K, the Ewald was used for the summation of electrostatic interactions and the Atom for van der Waals interactions, with the cut-off distance set to 15.5 Å. The effect of carbon dioxide on oxygen adsorption in the coal pore structure was analyzed in the ...
(Figure 3a), it is possible to observe electron accumulation on the O atom and depletion around Zn, suggesting the formation of a bond with an ionic character (Zn2+O2−for wurtzite ZnO) [32]. The Zn–Zn interaction at the interface leads to charge depletion of both surfaces in favor ...