XPS powder samples were prepared by dispersing the samples on a two-sided tape fixed to a clean glass slide. The samples were later inserted on the XPS instrument and wide energy spectrum (0-1200 eV) was acquired to determine the elements present on each sample. Next, a narrow range ...
▲图2.催化剂的谱学表征。(a)含Cu样品的XANES,(b)含Cu样品的FT-EXAFS,(c)含Pd样品的XANES,(d)含Pd样品的FT-EXAFS,(e)含Pd样品的XPS,(f)CO-DRIFTS。 CH4转化评价实验结果(图3)表明,所构筑的PdCu/Z-5催化剂在120 °C展...
An XPS study was carried out on zeolites NaKA. Its adsorption behavior was correlated with the surface spectroscopic observations. The study involves an estimation of the surface composition and precise binding energy measurements of the external framework atoms of zeolites NaKA, and relating these valu...
Table 4 displays the Si/Al ratio on the external surface, which was established by calculating the atomic percentage using the area under the curve of the Si 2p and Al 2p signals observed in the XPS spectra. To assess the diversity of the synthesized zeolites, this Si/Al ratio of the zeo...
XPS analysis provides details of chemical composition. It helps identify the chemical bond type between the elements from the zeolite sample. The XPS test is employed to ascertain the metal oxide state and hydroxy group present on the zeolite surface, which strongly indicates that there is a possi...
To identify the generated carbon species,13C MAS solid-state NMR spectra and X-ray photoelectron spectra (XPS) were collected (Supplementary Figs.9,10) Four characteristic resonances at 29.4, 36.6, 41.4, and 46.6 ppm were observed from the fresh DD3R zeolite, which are assigned to C(4), ...
XPS spectra were collected from a Physical Electronics Model 5700 XPS instrument. A monochromatic AlKαX-ray source (1486.6 eV) was used with the power at 350 W. All spectra were obtained once reaching a vacuum of 5 × 10−9 torr or better. ...
The raw and modified zeolite X were characterized systematically using the BET method, the SEM, the FTIR, the XRD and the XPS to understand the physicochemical changes of the materials, and its sensitivity to Ru3+ adsorption. Batch adsorption experiments were carried out to investigate the effects...
After EIS, the XPS spectrum of LiXZP was conducted after scraping off the Ag current collectors from the LiXZP. No Ag could be detected in the Ag 3d spectrum, demonstrating that Ag could not participate in ion conduction as a mobile ion. The ionic conductivities of LiXZM and LiXZP were...
As shown in XPS spectra, the amount of surface carbon of the reused P-Hβ-US zeolite is much higher than that of the fresh one (Fig.8). This provides evidence for carbonaceous deposits on the surface of the reused P-Hβ-US zeolite, in total agreement with the BET and SEM results. ...