Synthesis, Characterization, and Environmental Applications of Cu-Ni-Doped Bismuth Molybdate

Figure 8

Optimization studies of Cr(VI) reduction: (a) UV-vis spectra for catalyst selection, (b) pH, (c) time, (d) catalyst dose, (e) K₂Cr₂O₇ concentration, and (f) percentage photoreduction efficiency comparison (pH: 4; time: 40 mins; catalyst does; 0.03 g; Cr(VI): 10 ppm).

(a)

(b)

(c)

(d)

(e)

(f)