<i>In situ</i> generation of hydrogen peroxide using a schwertmannite/nickel foam catalyst for enhanced heterogenous Fenton degradation of dye wastewater.

ABSTRACT: Conventional Fenton processes face challenges such as the need for external hydrogen peroxide (H₂O₂) addition, leading to low oxidant utilization efficiency, high costs, and safety risks. To address these limitations, a novel heterogeneous Fenton catalyst was fabricated by supporting schwertmannite (Sch) on nickel foam (NF) for the degradation of Rhodamine B (RhB). This system enables the in situ generation of H₂O₂ through an oxygen reduction reaction (ORR) pathway on the NF substrate. Under optimized conditions (20 mg L^-1 RhB, pH 2.0, 180 rpm), the Sch/NF composite achieved 99% RhB decolorization within 15 min. Quenching experiments and electron paramagnetic resonance analyses identified hydroxyl radicals (˙OH) and singlet oxyg

SUBMITTER: Feng K 

PROVIDER: S-EPMC12895240 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature