2021年5月1日 · We start with an introduction of the multiplet models that are central for the interpretation of 2p XAS of 3d transition metal ions. Section 2 introduces the different multiplet models, section 3 discusses the multiplet codes and section 4 …

2023年11月20日 · Here, we describe the self-assembling and self-activating nature of a photocatalytic system that forms under illumination of reduced anatase TiO 2 nanoparticles in an aqueous Ni 2+ solution. UV illumination creates in situ a Ni + /TiO 2 /Ti 3+ photocatalyst that self-activates and, over time, produces H 2 at a higher rate.

Fig. 8 shows 2p XPS and 2p XAS, respectively, calculated by the LDA + DMFT approach for NiO. In the XPS spectrum, besides the global structure, such as the spin-orbit splitting and the charge...

2013年11月8日 · We have studied the electronic structure of nanocrystalline NiO thin films, grown by radio-frequency magnetron sputtering under different experimental conditions, using x-ray absorption spectroscopy. The O 1s and Ni 2p spectra showed distinct changes as a function of O 2 content in the plasma, which were reproduced with cluster model calculations.

2014年9月19日 · The Ni 2p XAS intensity is proportional to the unoccupied 3d states, and the intensity trend indicates that the Ni 3d electron density decreases around the absorbing Ni atoms for higher carbon concentration. The intensity of the normally sharp Ni 2p 3/2 XAS peak in pure crystalline Ni phase, is largely suppressed by the broadening and ...

2007年5月1日 · NiO has been grown by reactive evaporation of metallic Ni in an oxygen atmosphere (2 × 10 −5 Torr) at room temperature. We paid special attention to the study of the early stages of growth. Both, Ni 2p and O 1s core-level XAS spectra were measured.

x-ray absorption spectroscopy (XAS) measured in total-electron-yield (TEY) mode. First we measured the Ni 2p,,, absorption spectra of Ni(100) covered with Tb as a function of the overlayer thickness. Secondly we recorded the 0 Is absorption spectra of Ta,O, films produced by controlled anodic oxidation of Ta foils as a function of the oxide

The NEXAFS analysis revealed that the spectrum of NaBH 4 -TBAB@Ni resembles a typical Ni metallic, and the broad peak observed at 852.8 eV may be due to the multiplet effects of a more complex...

5 天之前 · Overall, the Ni L 3 XAS spectra show features similar to properly optimized NdNiO 2 thin films [18, 19, 36] with a dominant peak due to the 2p 6 3d 9 → 2p 5 3d 10 transition. Figure 3a shows XAS spectra acquired with linearly-polarized light in the parallel and nearly perpendicular direction with respect to the NiO 2 planes, i.e. σ

In this paper I will give my view on the status of our understanding of the 2p (L2,3) x-ray absorption spectra of transition metal systems. I will mainly focus on solid transition metal oxides and on coordination complexes of transition metal ions. This contribution was written at the CECAM workshop on X-ray spectroscopy, 13-15 July 2011.