Gas-phase flame synthesis and characterization of iron oxide nanoparticles for use in a health effects study

Bing Guo, Ian M. Kennedy

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Iron oxide nanoparticles, to be used in a health effects study, were synthesized in a H2/air diffusion flame and characterized by transmission electron microscopy, X-ray diffraction, surface area measurement, inductively coupled plasma mass spectrometry, and a spectrophotometric speciation method. The nanoparticles exhibited the maghemite (γ-Fe2O3) crystal structure and contained only trivalent iron. There were two size modes in the particles. The large size mode contained crystalline, non-agglomerated particles with a median diameter of approximately 45 nm; the small size mode contained particles that were in the size range of 3-8 nm and were mostly amorphous. Depending on the value taken for the small particle size, the small mode accounted for 73-82% of the particle surface area. The particles in the small size mode were likely formed from the vapor of FeO and Fe.

Original languageEnglish
Pages (from-to)944-951
Number of pages8
JournalAerosol Science and Technology
Volume41
Issue number10
DOIs
Publication statusPublished - Oct 2007
Externally publishedYes

Fingerprint

Flame synthesis
Iron oxides
iron oxide
Gases
Health
Nanoparticles
Inductively coupled plasma mass spectrometry
gas
Iron
Crystal structure
Particle size
Vapors
Crystalline materials
Transmission electron microscopy
X ray diffraction
surface area
Air
maghemite
crystal structure
range size

ASJC Scopus subject areas

  • Environmental Chemistry
  • Materials Science(all)
  • Pollution

Cite this

Gas-phase flame synthesis and characterization of iron oxide nanoparticles for use in a health effects study. / Guo, Bing; Kennedy, Ian M.

In: Aerosol Science and Technology, Vol. 41, No. 10, 10.2007, p. 944-951.

Research output: Contribution to journalArticle

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