Preparation and Characterization of Ni-Doped TiO₂ Materials for Photocurrent and Photocatalytic Applications

Figure 3

SEM micrographs of Ni-doped TiO₂ (Ni = 0.1 (a); 0.5 (b); 1 (c); 5 (d); 10 (e) at. wt.%) powders formed at 550°C for 6 h.

(a)

(b)

(c)

(d)

(e)