Applied Physics A

, 123:802 | Cite as

Synthesis of Fe-based core@ZnO shell nanopowders by laser pyrolysis for biomedical applications

  • Lavinia Gavrila-FlorescuEmail author
  • Florian Dumitrache
  • Mihaela Balas
  • Claudiu Teodor Fleaca
  • Monica Scarisoreanu
  • Iuliana P. Morjan
  • Elena Dutu
  • Alina Ilie
  • Ana-Maria Banici
  • Claudiu Locovei
  • Gabriel Prodan


Nano-sized Fe-based (metallic, carbidic and/or oxidic) core@ZnO shell particles have been successfully synthesized in one step by the laser-induced pyrolysis method in an oxygen-deficient environment. The specific precursors were separately introduced through a three concentric nozzles injector: Fe(CO)5 vapors carried by C2H4 sensitizer (central flow), Zn(C2H5)2 vapors carried and diluted with Ar (middle annular coflow) and Ar containing low amount of O2 (external flow). Keeping constant the ethylene-carried Fe(CO)5 and O2 flows, while diminishing the Zn(C2H5)2 flow, we observed an increase of the Fe/Zn ratio in the resulted nanopowders. Also, using the same metal precursor flows, a nonlinear correlation between O2 external flow and nanocomposite atomic oxygen content is evidenced, indicating a possible interference of supplementary oxidation after air exposure. However, the lowest oxygen content along with metallic zinc was found in the sample synthesized in the most oxygen-deficient environment. Transmission electron microscopy (TEM), high-resolution electron microscopy (HRTEM), selected area electron diffraction (SAED), X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDS), X-ray photoelectron spectroscopy (XPS) and magnetic analyses were performed for a comprehensive characterization. The aqueous Fe-based@ZnO nanoparticles (NPs) suspensions were prepared using L-Dopa (l-3,4-dihydroxy-phenylalanine) as stabilizing agent in physiologic media. Also, a biocompatibility in vitro study was performed for PBS (phosphate buffered saline)-dispersed L-Dopa-stabilized Fe-based@ZnO nanoparticles with the best core–shell structural features on both human normal lung fibroblasts and tumoral colorectal cells. Our results proved the ability of these newly synthesized nanostructures to target cancer cells in order to induce cytotoxicity and to exhibit biocompatibility on normal cells for maintaining the proper function of healthy tissue.



This work was supported by a grant of the Romanian National Authority for Scientific Research and Innovation, CNCS/CCCDI-UEFISCDI, project number PN-III-P2-2.1-PED-2016-1698, within PNCDI III and also by the Nucleu 4N/2016 Program from the same authority. The contributions of Dr. Cristian Mihailescu (XPS analysis) and Dr. Oana Marinica (magnetic measurements) are also greatly acknowledged.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  • Lavinia Gavrila-Florescu
    • 1
    Email author
  • Florian Dumitrache
    • 1
  • Mihaela Balas
    • 2
  • Claudiu Teodor Fleaca
    • 1
  • Monica Scarisoreanu
    • 1
  • Iuliana P. Morjan
    • 1
  • Elena Dutu
    • 1
  • Alina Ilie
    • 1
    • 3
  • Ana-Maria Banici
    • 1
    • 5
  • Claudiu Locovei
    • 3
  • Gabriel Prodan
    • 4
  1. 1.National Institute for Lasers, Plasma and Radiation Physics (NILPRP)MagureleRomania
  2. 2.Department of Biochemistry and Molecular BiologyUniversity of BucharestBucharest 5Romania
  3. 3.Faculty of PhysicsUniversity of BucharestMagureleRomania
  4. 4.Faculty of Mechanical, Industrial and Marine Engineering“Ovidius” UniversityConstantaRomania
  5. 5.Faculty of Mathematics and Natural SciencesUniversity of CraiovaCraiovaRomania

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