The synergistic activation of peroxymonosulfate for the degradation of Acid Scarlet GR by palygorskite/MnO/FeO nanocomposites.

A heterogeneous Fenton-like system comprising palygorskite/MnO/FeO (PMM) as a superior, low-cost, and eco-friendly ternary catalyst for the activation of peroxymonosulfate (PMS) was investigated with regard to its ability to degrade Acid Scarlet GR in an aqueous solution. Under the optimum catalytic oxidation conditions of 1 g L PMM, 0.7 g L PMS, and an initial pH value of 5, 200 mg L Acid Scarlet GR was completely degraded within 300 min.