Co3o4 exafs fitting
WebApr 1, 2024 · The Quantitative EXAFS fitting is performed (Figs. 6 c and 6 d), and the structural parameters of Co in the Co 3 O 4-CeO 2-IOV are listed in Table S2. In the Ce L 3 -edge XANES curves of all the catalysts ( Fig. S6 ), Co 3 O 4 -CeO 2 -IOV exhibits a lower intensity in absorption edge than Co 3 O 4 -CeO 2 and Co 3 O 4 -CeO 2 -IOV-C, …
Co3o4 exafs fitting
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WebMaterials Project WebSep 4, 2024 · EXAFS fitting was carried out in each of k, k 2, k 3, and R space, with similar results obtained in all of these. The results reported here are fitting in R (with k 2). The XAS data were recorded up to k = 10 Å −1, but the higher-energy data were not of sufficient quality for useful fitting (as judged by visual inspection), so fitting was ...
WebDeveloping low cost, high-efficiency and robust electrocatalysts to boost the oxygen evolution reaction (OER) is of great significance for clean energy storage and conversion devices such as electrochemical water splitting devices, rechargeable zinc–air batteries, and so on. In this study, we present a facil 2024 Sustainable Energy and Fuels HOT Articles WebOct 12, 2015 · Morphology and local structure. Figure 1 shows scanning and transmission electron micrographs of CoO x films as well as selected area electron diffraction (SAED). The as-prepared films exhibited a ...
WebJul 10, 2024 · The selected fitting parameters are listed in Tables S2 and S3. The radial distribution functions of Co K-edge Fourier transformed (FT) k 3-weighted EXAFS spectra depicted in Fig. 4 (f) suggest the appearance of Co−O and Co−Co bonds. The Co−Co bond distance in the Co K-edge FT-EXAFS spectra is like that in the Co 3 O 4 3 O 4 @Ni 2 P … WebIn situ Co K-edge quick-EXAFS (QEXAFS) coupled with temperature-programmed oxidation as well as ex situ XAFS was applied to investigating the mechanism for enhancing the …
WebJul 17, 2024 · Further evidence of an oxygen-deficient perovskite structure is obtained from the best fitting of the first Co–O coordination shell of the BSCF-FS EXAFS (Supplementary Fig. 21 and Supplementary ...
WebBy means of density functional theory calculations that account for the on-site Coulomb interaction via a Hubbard term (DFT+U), we systematically investigated CO adsorption … hermes is an ancient god from which mythologyWebFigure 9 before (c2 and c3) and after TPR (d2 and d3) emphasize these changes. In EXAFS fittings following TPR and cooling to ambient conditions, the Pt-promoted Co/SiO 2 catalyst derived from the ... mawsworn chargers reignsWebFig. 3 shows the recorded EXAFS spectra for all samples of the studied ternary Ni–EDTA–CN − system with cyanide concentrations between 0 and 3 M. Typical total data acquisition times for these 250 mM Ni 2+ solutions were a full day, except the last sample with c CN = 3 M, where a red layer precipitated on the sample holder's window in a few … mawsworn chargers reinsWebMay 24, 2024 · Co3O4/CeO2 displays a comparable stability to Co3O4 thus breaks the activity/stability tradeoff. ... of the catalytic OER from EIS fitting using the Voigt ... of k 3 … mawsworn doubtcaller wowWebApr 1, 2013 · The electronic band gaps of Co3O4 and Fe3O4 are shown to remain largely unchanged as Al is substituted into the lattice forming M2AlO4 (M=Fe,Co), but increase … mawsworn cryptoseerWebJan 1, 2024 · The Co 3 S 4 nanosheets on Ni foam was prepared by electrodeposition and sulfurization for various time.. The Co 3 S 4 nanosheets on Ni foam with sulfurization for … mawsworn coercer wowWebExtended X-ray absorption fine structure (EXAFS), along with X-ray absorption near edge structure (), is a subset of X-ray absorption spectroscopy ().Like other absorption spectroscopies, XAS techniques follow Beer's law.The X-ray absorption coefficient of a material as a function of energy is obtained using X-rays of a narrow energy resolution … mawsworn chest