3.1.9 XPS Analysis The XPS analysis represents the valence band states and oxidation states of CeO2/MnFe2O4-1:1 NCs before and after the photodegradation. The surface defects play a critical role in the photocatalytic performance of the nanomaterial. In this regard, XPS serves as a useful to...
UPS:Ultra-violet photoelectron spectroscopy refers to the measurement of kinetic energy spectra of photoelectrons emitted by molecules which have absorbed ultraviolet photons, in order to determine molecular orbital energies in the valence region REELS:Reflected electron energy loss spectroscopy provides infor...
Next, electron concentration in the N samples was evaluated using UPS, which can provide a direct measurement of the work function and valence band energy. The work function is extracted from the difference between the energy of the UV photons and the secondary electron cutoff (high-binding energ...
UK). The radiation source was monochromatic with an AlKα radiation power 1486.6 eV (anode HT of 15 kV, 10 mA) and spot size 850 μm. The vacuum in the analysis chamber was better than 1 × 10–9mbar, and the binding energy (...
Au 4f core level spectra of the Au NPs deposited onto the (a) TiO2 -amorphous, (b) TiO2 -Annealed600 (c) TiO2-annealed600-NH3 films; Figure S4: XPS valence band spectra of the samples obtained for the Au NPs deposited onto the TiO2 -Annealed600 film during different deposition times (...
Carbon-Based Nanomaterials for Plasmonic Sensors: A Review. Sensors 2019, 19, 3536. [Google Scholar] [CrossRef] [PubMed] [Green Version] Yang, F.; Hu, G.; He, H.; Yi, M.; Ge, Y.; Ran, L.; Peng, K. Effect of Amorphous Carbon on the Tensile Behavior of Polyacrylonitrile (PAN...
NAP-XPS will lead to an understanding of the effect of the oxygen partial pressure on the oxidation state, stoichiometry, work-function (Φ), valence band, chemisorbed oxygen ion status and concentration and defect analysis. Figure 5. A schematic of the NAP-XPS system utilized for high ...
For modeling the spectra of the valence region of solids, plane-wave methods are more suitable for calculating the electronic structure of a crystal structure. Using a combination of the experimental method (XPS) and calculations will make it possible to investigate changes in the electronic ...