T-shaped Fe-based multistoichiometry stereoscopic composite catalyst with ultrahigh activity towards Fenton-like water treatment, synthesized via graphene-controlled growth

We report an unusual T-shaped Fe-based multistoichiometry stereoscopic composite catalyst with multifunctional active sites, fabricated via a one-step graphene-controlled all-solid-state synthesis. This tailored catalyst can improve all three catalysis processes of H_{2}O_{2} adsorption, peroxide bond activation, and HO^{•} desorption, resulting in a novel catalytic framework where the two-dimensional (2D) Fe_{2}O_{3} nanosheets optimize H_{2}O_{2} adsorption, and the 2D FeOCl nanosheets vertically grown on the Fe_{2}O_{3} surface can facilitate both the generation and desorption of HO^{•}.