Photocatalytic Reduction of Cr(VI) in the Presence of Humic Acid Using Immobilized Ce-ZrO under Visible Light.

Cr(VI) has several industrial applications but it is one of the most dangerous pollutants because of its carcinogenicity and high toxicity. Thus, the removal of Cr(VI) by photocatalytic reduction was investigated. The catalyst applied, Ce-ZrO, was immobilized, through a sol-gel process on a silicon carbide (SiC) support, to increase the efficiency and avoid using suspended nanoparticles.