Preparation of hcp and fcc Ni and Ni/NiO Nanoparticles Using a Citric Acid Assisted Pechini-Type Method

Figure 4

Low-magnification TEM image of the Ni/NiO nanoparticles obtained at 400°C for 2 h. (b) HRTEM image of the Ni/NiO nanoparticles.

(a)

(b)