2021年9月8日 · XPS measurements reveal the emergence of an intermediate Cu–O–Si phase in the grown film with atomic concentrations of ∼1, ∼86, and ∼13% for Cu, O, and Si, respectively. This intermediate state, as high as ∼41%, dominates the film composition followed by Cu oxides (∼37%) and Si oxides (∼22%).

1998年7月22日 · Grazing incidence X-ray diffraction (GIXRD) and X-ray photoelectron spectroscopy (XPS) are used for phase identification and the determination of chemical states of the Cu Si (1 1 1) system ion beam mixed at room temperature (RT) and 100°C. Cu 2 p and Si 2 p photoelectron peaks are analyzed to study the silicide formation.

2021年2月1日 · The material exhbits a reversible Li +-storage mechanism, as validated using ex-situ XRD, HRTEM, XPS, and Raman spectroscopy. When the CuSi 2 P 3 was ball-milled with graphite, a yolk-shell structured CuSi 2 P 3 @graphene nanocomposite was formed that demonstrated enahnced Li +-stroage performance in terms of cyclability and initial Coulombic ...

2021年6月1日 · A highly dispersed Cu-O-Si composite oxide framework catalyst with high surface area (619 m 2 /g) and very small particle size (~3 nm) has been synthesized using an improved precipitation method, which showed high catalytic activity toward the hydrogenation of dimethyl oxalate (DMO) (99.9% conversion of DMO and 96.7% selectivity for ethylene gly...

一项组合研究（拉曼光谱、TEM、H2-TPR、XPS、CO-DRIFTS 和 NH3-TPD）验证了巢状前驱体增强了 CuOx-SiO2 相互作用，从而提高了 Cu+ 丰度以及活性位点的热稳定性。 吸附分子的原位 FTIR 光谱与密度泛函理论计算相结合，证明 Cu+ 位点负责糠醛 （FAL） 和中间体糠醇 （FOL） 的吸附和活化，而 Cu0 位点负责 H2 解离。 这项工作揭示了 Cu/SiO2 催化剂的 Cu0-Cu+ 双位点协同效应的重要性，可用于生物质升级过程中的其他 HDO 反应。

High resolution XPS spectrum of Cu 2p (A), S 2p (B) for the bulk CuS and Cu 2p (C), S 2p (D) for the S-rGO/CuS. [...] Over the present material synthesis routes, the sonochemical route is highly...

刚接触XPS，求大家帮助。测试的材料含C，N，O，Cu，我想知道那些画圈的都是什么峰。。。Cu的2p1/2,2p3/2的峰又在哪里。。。2013/0709/w122h1774780_1373373998_836.jpg|bcs|201307097)Q(D$FBV56R(9)E9Q@LL}4.jpg

从xps得谱图很难判断出来，要结合铜的俄歇峰的位置来判断。 看xps全谱图中Cu得俄歇峰的位置。 对于有些元素，处于不同化学环境时，它们在XPS谱图上的光电子峰并没有显示出可观测得位移，然而俄歇峰随着化学环境不同出现明显的位移。 对于Cu+和Cu2+，应该还是可以区分的。 下面是一些例子. Cu+是比较容易氧化的。 任务：根据实测的直接谱 (俄歇峰)或微分谱上的负峰的位置识别元素。 方法：与标准谱进行对比。 注意：由于电子轨道之间可实现不同的俄歇跃迁过 …

2001年3月1日 · The chemistry of Cl2 on a Cu/Si (100) (at relatively high near surface concentrations of Cu) surface has been investigated using X-ray photoelectron spectroscopy (XPS), temperature programmed...

2024年6月15日 · Evidence for the presence of distinct copper species was provided by diverse characterizations like XRD, N 2 sorption, TEM and XPS. Quantitative analysis based on the number of active sites disclosed the reaction rates for different copper species actually followed the order of highly dispersed CuO (0.19–0.3 min −1 ) > bulk CuO (0.14 min ...