Electrospraying of ferritin solutions for the production of monodisperse iron oxide nanoparticles

David Gonzalez, Albert G. Nasibulin, Hua Jiang, Paula Queipo, Esko I. Kauppinen

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Iron oxide nanoparticles with uniform size and narrow size distribution were synthesized by electrospraying of ferritin and subsequent heat treatment at 800°, 850°, and 900°C. Solutions of ferritin in both water and water/iso-propanol mixture (50:50) were electrosprayed in diverse gaseous environments. Narrow mobility size distributions with a mean mobility diameter of 4.5 nm and a geometric standard deviation <1.2 were obtained at 800°C. The process of aerosol formation involved the thermal oxidation of the ferritin organic shell. The utilization of a water/iso-propanol (50:50) ferritin solution led to the establishment of a more stable electrospray, and, consequently, an increase in the total particle concentration was observed. Furthermore, carbon-coated magnetite (Fe3O4) particles were generated when CO was used as carrier gas.

Original languageEnglish
Pages (from-to)901-912
Number of pages12
JournalChemical Engineering Communications
Issue number7
Publication statusPublished - Jul 2007
Externally publishedYes


  • Electrospray
  • Ferritin
  • Iron oxide nanoparticles


Dive into the research topics of 'Electrospraying of ferritin solutions for the production of monodisperse iron oxide nanoparticles'. Together they form a unique fingerprint.

Cite this