2020年11月15日 · The structure, composition, and morphology of the Ni 3 C loaded LaNiO 3 NPs are characterized by XRD, XPS, SEM, and HRTEM. The effects of loading different contents of Ni 3 C on the photocatalytic progress are investigated by UV–vis, EIS test, photocurrent test, electrocatalytic hydrogen evolution test, and Tafel analysis.

Considering the known metastability of Ni 3 C at elevated temperatures (>300 °C), TEM, XRD, XAS and X-ray photoelectron spectroscopy (XPS) were used to verify the structural integrity of the Ni 3 C phase and the evolution of the nanoparticle surface upon catalysis.

2018年7月5日 · X-ray photoelectron spectroscopy (XPS) was employed to further analyze the surface elemental components and oxidation states of the bare CdS NSs and CdS-1.0%Ni 3 C composite. As displayed in Fig. 4 A, the fully scanned spectra indicates the existence of Cd, S, Ni, C and trace amounts of O in CdS-1%Ni 3 C composites.

2017年11月1日 · X-ray photoelectron spectroscopy (XPS) measurements were performed on an ESCALAB-250 to characterize the valence of carbon atoms on the surface of the nanocomposite. The morphology was investigated in a JEOL-6490 field-emission scanning electron microscope (SEM) operated at an acceleration voltage of 20 kV.

2020年8月6日 · Experimentally, a facile strategy is designed to in situ fabricate Ni 3 C nanosheets on carbon cloth (CC), and simultaneously couple with Ni nanoparticles, resulting in the formation of an integrated heterostructure catalyst (Ni–Ni 3 C/CC).

We have systematically investigated a series of quasi-2D oxides, LaSrMn0.5M0.5O4 (M = Co, Ni, Cu, Zn), to enhance the electrocatalytic properties of the two half-reactions of water-splitting,...

2016年9月2日 · Here, we investigate sputter-deposited nanocomposites of metastable nickel carbide (Ni 3 C) nanocrystals in an amorphous carbon (a-C) matrix during thermal postdeposition processing via complementary in situ X-ray diffractometry, in situ Raman spectroscopy, and in situ X-ray photoelectron spectroscopy.

We investigated here crystalline nickel carbide nanoparticles (NPs) as catalyst in colloidal suspension for hydrogenation reactions under H. 2. (7 bar) and below 100 °C. The Ni. 3. C NPs catalyst was prepared by thermal decomposition of Ni(acac) 2.

2022年5月10日 · The synthesis mechanism of the Ni/Ni3C core-shell nanoparticles was proposed through X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) analyses.

2015年10月26日 · Angle-resolved, synchrotron-radiation X-ray photoemission spectroscopy (SR-XPS) results show that the stacking order is, from the surface to the bulk, Ni carbides (Ni 3 C/NiC x)/graphene/Ni/Ni silicides (Ni 2 Si/NiSi)/3C-SiC/Si. In situ SR-XPS during the graphitization annealing clarified that graphene is formed during the cooling stage.