AuTOH-3D-printed Nb2CTx/UiO-66@rGQDs nanocatalyst for enhanced light harvesting and photocatalytic degradation of simazine

초록

Simazine, a widely used herbicide, poses significant environmental and health risks due to its persistence in soil and water. This study investigates high photocatalytic degradation of simazine using 3D-printed Nb2CTx/UiO- 66@rGQDs nanocomposites in combination with gold tri-octahedron (AuTOH) nanoparticles as the composite nanocatalyst. The materials were synthesized via a facile method, leveraging unique properties of 2D niobium carbide (Nb2CTx) and UiO-66 metal-organic frameworks functionalized with reduced graphene quantum dots (rGQDs). The integration of Au nanoparticles could harness localized surface plasmon resonance (LSPR) effects, thereby increasing light absorption, generating more reactive species, and improving photocatalytic activity. The 3D-printed structures address the aggregation issues typical of powder-form photocatalysts, enhancing their stability and recyclability. Degradation efficiency of simazine under visible and UV irradiation was evaluated by measuring both UV-Vis adsorption and GC-MS. The integration of AuTOH nanoparticles with 3D-printed Nb2CTx/UiO-66@rGQDs nanocomposites demonstrated superior photocatalytic performance compared to pristine Nb2CTx, UiO-66@rGQDs. This research highlights the potential of integrating plasmonic nanoparticles with 3D-printed nanomaterials for environmental remediations.

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