X-Ray Edge Energies - ESRF
U 233 K edge 115609.8(36) Np 237 K edge 118674.2(38) 118688.7(68) Pu 244 K edge 121794.1(40)
(a) Normalized Zr K-edge XANES spectra of Zr foil, ZrCl4, pristine ...
(a) Normalized Zr K-edge XANES spectra of Zr foil, ZrCl4, pristine ZrO2, Vo-poor ZrO2, and Vo-rich ZrO2. (b) Zr K-edge EXAFS spectra (R space, k³-weighted) of Vo-rich ZrO2 and corresponding...
Zirconium nanoparticles prepared by the reduction of zirconium …
Apr 6, 2011 · The main K-edge position of Zr-syn sample is at a much lower energy than that of ZrO 2 and at a slightly higher energy than the hcp Zr standard. This observation reveals that the majority of Zr in Zr-syn has been reduced to the metallic Zr 0 oxidaton state.
Zr K-edge (a) normalized XANES, (b) k 3 -weighted EXAFS
The Zr K-edge XAS of Zr-syn is compared with the standards, ZrO 2 (also used as a starting material) and metallic hexagonal close packed (hcp) Zr as shown in Figure 2.
Inverse ZrO2/Cu as a highly efficient methanol synthesis ... - Nature
Nov 13, 2020 · Here we report inverse ZrO2/Cu catalysts with a tunable Zr/Cu ratio have been prepared via an oxalate co-precipitation method, showing excellent performance for CO2 hydrogenation to...
Probing local distortion around structural defects in half-Heusler ...
Nov 13, 2020 · The results of both Zr and Ni K-edge XAFS spectra verified the existence of atomic defects at the vacancy sites distorting the C1b-type crystal structure.
Zr K-edge XANES of standard reference compounds,
Figure 2 shows the Zr K-edge XANES for the standard reference compounds. Note that baddeleyite, zirconium sulfate tetrahydrate, and zirconolite all have rounded features at the top of the...
In situ XAFS study at the Zr K-edge for SiO2/ZrO2 nano-sol
Mar 1, 2001 · The structural characterisation of SiO2/ZrO2 nano-sol particles, prepared by mixing SiO2 sol and aqueous solution of ZrOCl2 8H2O, has been carried out by in-situ XAS measurement at the Zr K-edge during condensation reaction.
Formation of a zirconium oxide crystal nucleus in the initial ...
Apr 19, 2024 · Element-specific pair distribution function analysis using anomalous X-ray scattering data showed the formation of a liquid ZrO 2 -like local structural motif and edge sharing between the ZrO x...
imaginary part of a Fourier transformed k3-weighted experimental χ(k). Structural parameters refined were (i) E0 shifts for Zr and O backscatterers, (ii) Debye temperatures