V-Ti3C2 nanozyme with peroxidase-like activity for dye removal and colorimetric detection of Fe3+

In this study, V-doped V-Ti3C2 was synthesized via a simple one-step hydrothermal method. The results demonstrated that the surface of the lamellar V-Ti3C2 structure, abundant in hydrophilic functional groups and reactive active sites, exhibited outstanding peroxidase-like activity with a Vmax 12.8 times higher than that of HPR. In this study, we employed the doped modified V-Ti3C2 with rich functional groups to efficiently adsorb organic dyes in aqueous environment. Subsequently, we conducted the degradation of the dyes and the selective detection of ferric ions in wastewater using its peroxidase-like activity. The combination of the two processes leverages the different characteristics of V-Ti3C2, which provide a versatile and efficient solution to the challenges posed by water pollution. Notably, the excellent adsorption characteristics and catalytic properties of V-Ti3C2 highlight the capability of nanozymes for extensive applications in addressing water pollution challenges.