T-Shaped Fe-Based Multistoichiometry Stereoscopic Composite Catalyst with Ultrahigh Activity toward Fenton-like Water Treatment, Synthesized via Graphene-Controlled Growth

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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 H₂O₂ adsorption, peroxide bond activation, and HO• desorption, resulting in a novel catalytic framework where the two-dimensional (2D) Fe₂O₃ nanosheets optimize H₂O₂ adsorption, and the 2D FeOCl nanosheets vertically grown on the Fe₂O₃ surface can facilitate both the generation and desorption of HO•.