The electrocatalyzed oxygen reduction and evolution reactions (ORR and OER, respectively) are the core components of many energy conversion systems, including water splitting, fuel cells, and metal–air batteries. Rational design of highly efficient non-noble materials as bifunctional ORR/OER electrocata...
The location of the absorption edge for ZnNC reveals that the oxidation state of the Zn atom is between 0 and + 2. The Fourier-transformed (FT) k3-weighted EXAFS spectrum of ZnNC exhibits a main peak at around 1.47 Å, corresponding to Zn-N coordination. The possibility of Zn...
Their approximate growth rates, their effect on local surface compositions of the alloy substrate, and their degree of interface planarity are considered critical in determining subsequent oxidation reactions when held for extended thermal exposures. The precursor oxides were predominantly nickel or cobalt ...
aXANES spectra of cobalt K-edge for NR (red) and NS (black). Reference samples of Co(OH)2(blue), Co foil (green), CoO (purple), Co3O4(yellowish-brown), and Co2O3(purple) are included;bFitted oxidation states of Co for NR (green point) and NS (blue point);cFourier transform...
2. Overview of Mass Spectrometry Methods for Protein Oxidation Analysis Mass spectrometry measures the mass-to-charge ratio (m/z) of ionized analytes, and as oxidative modifications alter the chemical composition of a protein, they change the m/z ratio of the intact protein an...
- 《Journal of Advanced Oxidation Technologies》 被引量: 112发表: 2008年 Finite element modeling of contaminant transport in soils including the effect of chemical reactions. The movement of chemicals through soils to the groundwater is a major cause of degradation of water resources. In many ...
WEOM contains relatively high abundance of low molecular weight and thermodynamically more favorable components for microbial oxidation (aminosugars and carbohydrates), making WEOM an energetic carbon source for groundwater that can fuel reduction half-reactions such as iron oxide reduction. Although the...
(1)), but it also depends upon photo-assisted Fe-reduction so that iron might act catalytically in producing hydroxyl radicals. Those events may be driven by the oxidation of an iron ligand (Eq. (2)) or by any other photo-induced source of electrons that might reduce Fe3+ to Fe2+ (...
(Supplementary Fig.6). As Ru in the dimer structure can adsorb and desorb O more easily through an oxidation–reduction process than Pt, the CV curve in Supplementary Fig.6bexhibited a weak O adsorption/desorption peak. Figure4ashows the HER curves of the catalysts, which were measured by ...
which leads to the oxidation of the metallic Zn species forming Znδ+species on the Cu0surface13. It cannot be clarified if all Zn sites in contact with Cu0are oxidized in the CO2/H2gas mixture, but the majority of the sites should have a positively charged nature. The models of the ...