2022年10月5日 · The valence band (VB) potentials of O V-BiOBr and Cu 2−x S were tested by VB-XPS, which can be calculated by the formula: E NHE = φ + E VB − XPS − 4.44, where E NHE is the standard hydrogen potential of valence band, E VB-XPS is the VB value measured by VB-XPS and φ is the instrumental work function (4.55 eV) [48].

2022年10月17日 · Then, from the X-ray photoelectron spectroscopy (XPS) we found the peaks from Cu 2p (Figure S2a, Supporting Information), Bi 4f (Figure S2b, Supporting Information) and S 2p (Figure S2c, Supporting Information) are well according to the previously reported data from Cu 3 BiS 3 compound and the EDS results (Figure S2d, Supporting Information ...

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2023年8月10日 · 根据价带x射线光电子能谱价带谱（vb xps）的测试数据作图，将所得到图形在0 ev附近的直线部分外推至与水平的延长线相交，交点即为ev。

2021年9月23日 · The experimental XPS valence band (VB) spectra are plotted in Fig. 3d–f (green lines). The simulated DOS (black lines in Fig. 3 d–f) were mathematically broadened for better consistency with ...

2024年4月8日 · Furthermore, the valence band (VB) edge levels of the catalysts were determined by the valence band XPS spectrum (VB-XPS). As shown in Fig. 9a, b, the edge levels of the valence band are 1.71 and 1.78 eV for the Cu 2 WS 4 and MoS 2 samples, respectively. According to the equation:

To develop an efficient photocatalyst for solar-to-hydrogen production is regarded as a promising approach to tackling the energy and environmental challenges we are currently facing. In this work,...

2022年4月16日 · Thus, valence band (VB) spectra, obtained using X-ray photoelectron spectroscopy (XPS), are superpositions of the VB spectra of passive films and that of the metallic Ti substrate. In this study, to obtain the VB spectra only of passive films, angular resolution (for eliminating the substrate Ti contribution) and argon ion sputtering (for ...

The valence band (VB) XPS studies revealed that for Zr-containing catalysts, the Cu 3d anti-bonding orbital splits from the main VB and shifts toward lower binding energy (BE). The surface Cu/ (Al + Zr) ratios were found to be close to those in the bulk while segregation of Zn at the surface was evidenced in all samples.

1 天前 · 此外，通过紫外-可见吸收光谱和价带X射线光电子能谱（VB-XPS）分析，确定了Cu掺杂有效地调节了InP量子点的能带结构。 图二：(a) InP/SnSe 2 /MoTe 2 器件结构图。(b) InP/SnSe 2 /MoTe 2 器件I的光学显微镜图像。 (c) MoTe 2 、SnSe 2 、SnSe 2 /MoTe 2 和InP/SnSe 2 /MoTe 2 异质结的拉曼 ...