In this paper we report on the activity of Cuand Ni-containing cerium oxide catalysts for low-temperature water-gas shift (WGS). Bulk catalysts were prepared in nanocrystalline form by the urea co-precipitation–gelation method. Lanthanum dopant (10 at.%) was used as a structural stabilizer of ceria, while the content of Cu or Ni was in the range of 5–15 at.% (2–8 wt.%). At low metal loadings, C...

In the present study, a nanocrystalline Ni-Fe matrix with reinforced TiO2 nanoparticles as functional nanocomposite material was fabricated by pulsed current electroforming in UV-LIGA (lithography, electroplating, and molding). The influences of on deposition were also investigated using scanning electron microscopy, transmission vitro cytotoxicity assay. It found that 5 wt.% showed smooth surf...

Abstract In order to study the effects of coarse grain size and Ni content on mechanical properties, molecular dynamics (MD) simulation nanocrystalline (NC) Ni-W alloys with bimodal structure is carried out. The NC samples are established by embedding into fine matrix. solute atoms in segregated boundary affected zone (GBAZ) through severe plastic deformation (SPD). uniaxial tensile shows that ...

We have methodically investigated the structural, spectroscopic, local atomic structure and magnetic properties of aquatic $${\text{Zn}}_{{1{\mathbf{ - }}x}} {\text{Ni}}_{x} {\text{S}}$$ (0 ≤ x 0.04) nanocrystals. The structural study synthesized samples is observed by X-ray diffraction data with Rietveld refinement. Proficient decrease lattice parameters inter-planar spacing are determined on ...

The mechanisms of deformation and damage evolution in electrodeposited, fully dense, nanocrystalline Ni with an average grain size of ~30 nm and a narrow grain size distribution were investigated by recourse to (i) tensile tests performed in situ in the transmission electron microscope and (ii) microscopic observations made at high resolution following ex situ deformation induced by compression...