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Updated: Sep 19, 2025
Solubilization and Bio-conjugation of Quantum Dots and Bacterial Toxicity Assays by Growth Curve and Plate Count
Published on: July 11, 2012
Interfacial architecture on quantum dots modified metal-organic frameworks: Charge transfer mechanism, antibiotic
Yu Liu1, Mingyang Xu1, Weixin Zhao1
1State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China.
Abstract:
The light harvesting and interfacial morphology of metal-organic framework (MOFs) based photocatalyst poses great significance for antibiotic resistance inhibition. Herein, the hybrid interface of the Z-scheme ZIF-8@CuFeS2 quantum dots (ZIF@CF QDs) was established, which exhibited superior photodegradation performance for antibiotic associated pollutants. Specifically, ZIF@CF QDs-Fe3O4 (ZIF@CF QDs-Fe) magnetic heterojunction achieved 90.27 % reduction of sulfamethoxazole (SMX) within 90 min (k=0.04496 min⁻¹), 5.99 lg inactivation of antibiotic resistant bacteria (ARB) and 4.57 lg of sul1 achieved within 6h. Notably, the built-in electric field of heterojunction was investigated via density functional theory (DFT) calculation, enhancing the charge migration during ZIF@CF QDs-Fe photoactivation. Furthermore, the radicals (·O₂⁻ and ·OH) photogeneration and redox cycles between metal ions (Zn2+, Fe2+/Fe3+, Cu2+) were strengthened in electronic path of ZIF@CF QDs-Fe. Besides, the repeatability and eco-toxicity inhibition guaranteed stable application in ecological photo-remediation. Hence, this study proposed an opportunity for nano-photocatalytic development, synergistically promising the light-conversion and wastewater purification in practical treatment.
