Figure2. XAS spectra of Ni0.034@TiO2: (a) Ni K-edge XANES of Ni0.034@TiO2and (b) Ni K-edge EXAFS of Ni0.034@TiO2, NiO, and Ni foil, shown in R space 本工作利用热熔融盐法制备了以TiO2为基底的Ni单原子催化剂,通过XRD、HRTEM和...
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NiCuCr displayed similarities with respect to Ni foil (Fig.2c, d). Figure2eshows the Cu K-edge XANES spectra. Similar to that for Ni spectra, the NiCuCr spectrum was close to that of Cu foil, revealing the metallic form of Cu in the NiCuCr, which was consistent with the XPS result....
making it difficult to uniquely identify the subspecies resolved by the simulations. Nevertheless, we can verify the qualitative agreement between experiment and theory using XAS in addition to the XPS data already shown. Results for the bulk 80%Ni−20%Cr alloy can be found in Supplementary Fig...
Ni foil spectra were simultaneously collected to samples and standards to enable energy calibrations. Data processing was carried out using Demeter open source software package, version 0.9.26, with XAS spectra processing (normalization and background subtractions) and extended X-ray absorption fine ...
the Ni-4nm/CeO2-590 catalysts exhibited similar pre-edge and near edge features with the Ni foil, indicating the supported Ni species were almost fully reduced after the high temperature reduction. In comparison, the pre-edge feature of Ni/γ-Mo2N-590 catalyst is slightly weaker than the me...
it was recorded by Horiba: HR Evolution with a 633-nm laser, whereas the XAS was collected by employing synchrotron radiation light source at BL12B2 beam line of the National Synchrotron Radiation Research Center (NSRRC) in SPring 8 (Japan) at room temperature. The detailed analysis of the ...
current of 250 mA at BSRF, respectively. In both beamlines, a pair of Si(111) monochromator crystals were employed, which were detuned by 50% to suppress high order harmonic X-rays. For Ni and Zn K-edge XAFS data collection, Ni and Zn foil were used for energy calibration, respectively...
In situ XAS was performed at beamline 12-BM at the Advanced Photon Source, Argonne National Laboratory. Fluorescence mode detection was used for all samples using a 13-element germanium solid state detector (Canberra). Reference metal foil spectra were collected in transmission mode with ion chamber...
Energy calibration was accomplished by using the first inflection points in the spectra of Ni and Mn metal foil references, which were 8333 and 6539 eV, respectively. XANES data were analyzed by Sam's Interface for XAS Package or SIXPACK software, with the Photoelectron Energy Origin E0 ...