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

Figure 9

Effect of irradiation time on the photocatalytic reduction of Cr(VI) (10 mg/L) for blank, NiFe₂O₄-SiO₂, and photocatalyst materials at 20°C, pH 4, and 120 rpm and under UV light.