The formation of oxide films on pure Ni surfaces by low energy oxygen ion-beam bombardment at room temperature was studied by X-ray photoelectron spectroscopy. Ion-induced oxidation is more efficient in creating thin NiO films on Ni surfaces than oxidation in oxygen atmosphere. The oxide thickness of bombarded samples is related to the penetration depth of oxygen ions in Ni and scales with the ...

An experimental analysis was performed to optimize the structure of Ni–Ni(OH)2/NiO core-shell nanowire electrodes for improving their application in pseudocapacitors. Thickness and composition active phase shell were compared after thermal treatments at 40, 70 300 °C. A Ni(0) core found by XPS electrode treated 40 °C, it still present a temperature increase °C but with lower Ni(OH)2/NiO ratio s...

Herein, the synthesis of pure and modified mesoporous nanocrystalline NiO is reported. The catalyst was with different wt % F-ions or K2O used to produce Methyl ethyl ketone (MEK) as a potential fuel/solvent. XRD analysis promoted catalysts confirmed formation Ni-metal covered by host oxide, compared NiO, especially for x F-ions. CO2-TPD results demonstrated existence basic sites over these var...

Nickel based nano particles are metallic Ni and NiO. These materials find wide utility in various fields in view of their high surface potentials, surface area, semi conducting nature, reduction and complexing tendencies. The present review is mainly aimed at the investigations made in using these nano nickel particles as adsorbents in purifying water. The synthesis of nano particles of Ni/ NiO...

Three-dimensional (3D) flower-like hierarchical beta-Ni(OH)(2) hollow architectures were synthesized by a facile hydrothermal route. The as-obtained products were well characterized by XRD, SEM, TEM (HRTEM), SAED, and DSC-TGA. It was shown that the 3D flower-like hierarchical beta-Ni(OH)(2) hollow architectures with a diameter of several micrometers are assembled from nanosheets with a thicknes...

Active and highly stable oxide-supported IrNiO(x) core-shell catalysts for electrochemical water splitting are presented. IrNi(x)@IrO(x) nanoparticles supported on high-surface-area mesoporous antimony-doped tin oxide (IrNiO(x)/Meso-ATO) were synthesized from bimetallic IrNi(x) precursor alloys (PA-IrNi(x) /Meso-ATO) using electrochemical Ni leaching and concomitant Ir oxidation. Special emphas...

Transitional metal oxide nanoparticles as advanced environment and energy materials require very well absorption performance to apply in practice. Although most metal oxides are based on crystalline, high activities can also be achieved with amorphous phases. Here, we reported the adsorption behavior and mechanism of methyl blue (MB) on the amorphous transitional metal oxide (Fe, Co and Ni oxid...

Resonant soft X-ray Raman scattering measurements on NiO have been made at photon energies across the Ni 2p absorption edges. The details of the spectral features are identified as Raman scattering due to d−d and charge-transfer excitations. The spectra are interpreted within the single impurity Anderson model, including multiplets, crystal-field and charge-transfer effects. At threshold excita...

Dinickel(II) silicon bis-[diphosphate(4-)], Ni(2)Si(P(2)O(7))(2), is isotypic with other phosphates of the formula M(2)Si(P(2)O(7))(2) (M = Co, Cd). All atoms except Si (site symmetry 2) are found in general positions. Ni(2)O(10) dimers formed from edge-sharing NiO(6) octa-hedra are linked by corners and O-P-O bridges, forming slabs parallel to (100), which are in turn inter-connected by O-Si-O...

In the crystal structure of the title complex, [Ni(C(6)H(7)NO)(3)](PF(6))(C(2)F(3)O(2)), the Ni(II) ion is in a slightly distorted octa-hedral NiO(3)N(3) coordination geometry with each of the three N and three O atoms in a meridional coordination. In the crystal, the complex mol-ecules and the trifluoro-acetate anions are connected via O-H⋯O hydrogen bonding into layers parallel to the ab plane.