Monatomic modified defective metal oxide catalyst, its preparation method and application

Abstract

This invention belongs to the field of catalyst synthesis technology, specifically relating to a single-atom modified defect-type metal oxide catalyst, its preparation method, and its application. This invention successfully constructs Co@TiO through a single-atom Co modification strategy. 2‑x This invention utilizes a highly efficient PMS catalytic oxidation system, achieving a shift in the PMS activation pathway from a "radical-dominated" to a "low radical-high non-radical yield" mode. The invention leverages the synergistic effect of single-atom Co and OVs to construct a Co@TiO₂ system. 2‑x The PMS system maintains high degradation efficiency within a pH range of 2–12, and is effective against Cl. ‑ HCO3 ‑ Co-coexisting substances exhibit strong anti-interference capabilities and good universality in degrading both electron-rich and electron-deficient pollutants. The Co@TiO₂ constructed in this invention... 2‑x The PMS system achieved a 95% dechlorination rate for 4-CP, and the biodegradability of the treated wastewater was significantly improved.

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