Performance of NiFe₂O₄-SiO₂-TiO₂ Magnetic Photocatalyst for the Effective Photocatalytic Reduction of Cr(VI) in Aqueous Solutions

Figure 11

Effect of catalyst dose on the photocatalytic reduction of 100 cm³ 10 mg/L Cr(VI) at 120 rpm in the presence of (a) 50 mg, (b) 100 mg, (c) 150 mg, and (d) 200 mg of NiFe₂O₄-SiO₂ and photocatalysts under UV light at room temperature and 300 min irradiation time.

(a)

(b)

(c)

(d)