Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.180
Publication date: 16th December 2024
We present a green and high-yield method for the synthesis of core-shell nanocomposites (NCs), where magnetic nanoparticles (MNPs) are coated with UiO-66 or UiO-66-NH₂ metal-organic framework (MOF) shells, using Zr or Hf clusters. Notably, the presented method avoids the use of hazardous dimethylformamide (DMF), relying on ethanol as a solvent, making it highly suitable for biomedical applications, such as targeted drug delivery or hyperthermia. The process allows for the control of the shell thickness from 5 to tens of nm and thus to further adapt the resulting composites for the specific applications. The shell thickness is shown to directly affect the heating capabilities of the NC. The MOF shell serves as an effective insulating layer which can confine the produced heat to close vicinity of the NC. As a proof of concept and to demonstrate the versatility of our approach, we also coated Au and Pd NPs of various shapes and sizes. In summary, this work provides a facile, efficient, and reproducible methodology for the preparation of NCs with a controlled size while opening new avenues in the field of MNP@MOF nanocomposites.
J. Kopp thanks the project "MSCA Fellowships na Univerzitě Palackého v Olomouci II", project number: CZ.02.01.01/00/22_010/0006945 for the funding.
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