In this paper we present XPS and Auger measurements on Nd 1.85Ce 0.15CuO 3.96 and its parent material. These measurements show that electron doping, by substitution of Ce 4+ in the case of Nd 3+, results in a filling of the Cu 3d 9 states. So the Ce doped compound will have a ...
通过SEM、XRD、XPS等表征研究发现,在电还原过程中,CuO纳米片被拓扑选择性地还原为具有丰富Cu(100)、Cu(110)晶面、Cu[n(100)×(110)]台阶面和Cu+/Cu0界面的金属Cu纳米片,其表面结构由于前体中的Cu-O-C界面而发生演变。通过...
图2 材料的化学态和电子态的研究。a) Cu@A-CrCuOx,Cr2O3,K2Cr2O7和Cr foil的Cr-K边XANES;b) 对应的傅里叶变换的k3加权的Cr-K边EXAFS;c) Cr-L2,3边XAS;Cu@A-CrCuOx和Cu NWs的d) Cu 2p XPS和e) Cu-L2,3边XAS...
Grain Boundaries of the Y-Ba-Cu-O System Studied by X-ray Photoelectron Spectroscopy (XPS)We have studied the grain boundaries of the YBa2Cu307 superconductor using micro-focused X-ray photoelectron spectroscopy. It is found that barium carbonate, barium hydroxide, and barium species with a low...
In this paper we present XPS and Auger measurements on Nd 1.85Ce 0.15CuO 3.96 and its parent material. These measurements show that electron doping, by substitution of Ce 4+ in the case of Nd 3+, results in a filling of the Cu 3d 9 states. So the Ce doped compound will have a high...
MWCNTs nanocomposite were characterized using a complementary set of chemical and physical analysis methods: transmission, high-resolution transmission and scanning electron microscopy (TEM, HRTEM, and SEM), X-ray diffraction (XRD), and energy-dispersive X-ray (EDS), Raman, XPS, and NEXAFS ...
求助大神关于XPS，中怎么看出来哪个电子能是Cu.Co,Al,Si,O
利用准原位XPS研究了重构后的Cu2P2O7电极表面的化学状态和成分,该方法能在不受空气干扰的情况下准确测定Cu的氧化态。CO2RR后,P 2p峰的消失进一步表明,重构后Cu2P2O7电极上P完全丢失 (图2d)。然而,在CO2RR过程中,这些Cu2+物种被Cu LMM俄歇光谱证实为金属Cu (图2e)。因此,在CO2RR过程中,Cu2P2O7在电位...
由XPS结果可知,OV-BiOBr和Cu2-xS主要通过Bi-S键和Cu-O键结合,表明OV-BiOBr/Cu2-xS高低结界面处形成了强化学键合。通过EPR(图1(i))结果可发现,随着Cu2-xS含量的增加,OV的峰强逐渐降低,表明Cu2-xS可以有效调节复合材料中OV的浓度。 图2 (a) OV-BiOBr/Cu2-xS的TEM图,(b-e) HRTEM图,(f-k)元素...
作者通过XPS对CBO所含的元素和价态进行分析,如图1b-e所示,并且该晶体对应的晶体结构如图1f所示,CBO晶体在具有P1空间群的三斜体系中结晶,CBO的三维框架由平面BO3三角形和Cu-O多面体组成(图2f)。 在晶体结构中,有3个晶体独立的Cu原子,它们与不同的O原子结合形成1CuO6八面体、2CuO5金字塔和3CuO4方形多面体单元...