A CE Doped Copper-Iron Trimetallic Microsphere as Fenton-Like Heterogeneous Catalyst for Degradation of Polyvinyl Alcohol, Rhodamine-B, and Reactive Red X-3b

To improve the catalytic activity of copper-iron based Fenton-like system, Ce element was used to add in the copper-iron based catalyst through spray drying-calcination method. Polyvinyl alcohol (PVA), Rhodamine-B, and Reactive Red X-3B were chosen as the target pollutants to evaluate the property of core-shell Ce doped copper-iron@γ-Al2O3 trimetallic microsphere catalyst. The experimental results showed that the core-shell Ce doped copper-iron@γ-Al2O3 trimetallic microsphere catalyst dramatically improved total organic carbon (TOC) removal rate and PVA removal rate. The PVA removal rate and TOC removal reached 99.98 % and 99.9 %, respectively, after 150 s catalytic oxidation under optimal conditions. The mechanism of the synergistic effect of copper, iron, and cerium were explained. This work exhibited a novel spray drying-calcination method to prepare core-shell Ce doped copper-iron@γ-Al2O3 trimetallic microsphere catalyst with outstanding catalytic activity in Fenton-like system, which provided enlighten for the development of heterogeneous Fenton-like catalyst materials