Titanium Carbide Composite Hollow Cobalt Sulfide Heterojunction with Function of Promoting Electron Migration for Efficiency Photo-Assisted Electro-Fenton Cathode

Constructing heterostructure within electrocatalysts proves to be an attractive approach adjust the interfacial charge redistribution promote adsorption of reactive species and accelerate transfer. Herein, we present one-pot solvothermal synthesis Ti3C2 supported hollow CoS2/CoS microsphere with uneven distribution as cathodic catalyst, which displays a superior quasi-first-order degradation rate (0.031 min−1) for sulfamethazine (SMT) in photo-assisted electric–Fenton (EF) process. CoS2/CoS/Ti3C2 is proven favor 2e− oxygen reduction reaction (ORR), H2O2 selectivity up 76%. The built-in potential heterojunction helps electron transfer, thus promoting production H2O2. Subsequently, rapidly activated produce ∙OH due synergistic effect Co S. Notably, exhibits enhanced EF (PEF) performance under light. excellent photocatalysis properties are attributed that unique structure catalyst improves light absorption, heterojunctions promotes separation photo-generated holes electrons. Given above advantages, cathode delivers high 98.5%, 91.8%, 94.5% SMT, bisphenol A, sulfadiazine, respectively, TOC removal efficiency 76% SMT 120 min. This work provides novel design construction efficient PEF cathodes treatment antibiotic wastewater.