Clinoptilolite mediated activation of peroxymonosulfate through spherical dispersion and oriented array of NiFeO: Upgrading synergy and performance.

Inspired by the features of both transition metal oxide and natural clinoptilolite (flaky structure with suitable pore diameter and open skeleton structure), we adopted a robust strategy by immobilization of nickel ferrite nanoparticles (NiFeO) on the clinoptilolite surface via typical citric acid combustion method. The hybrid catalyst exhibited enhanced peroxymonosulfate (PMS) activation efficiency and bisphenol A (BPA) degradation performance. Calculated by effective equivalent of NiFeO, it is found that the reaction rate constant (k) of NiFeO/clinoptilolite/PMS system (0.