Sonochemical synthesis of nanosized hollow hematite

Jin Ho Bang, Kenneth S. Suslick

Research output: Contribution to journalArticlepeer-review


Nanosized hollow iron oxide was synthesized using high-intensity ultrasound with carbon nanoparticles as a template. The hollow iron oxide was characterized by TEM, STEM, EELS, XRD, Raman, Mössbauer, and SQUID analyses. The TEM examination, EDS, and EELS analyses demonstrated the formation of iron oxide with nanosized hollow cores. XRD, Raman, and Mössbauer studies revealed that the hollow iron oxide is the most thermodynamically stable iron oxide, hematite (α-Fe2O3). Magnetization measurements showed that the hollow nanospheres of hematite are weakly ferromagnetic. Upon annealing, the hollow hematite becomes more crystalline but still maintains the hollow structure. Without the use of the carbon template, only agglomerated amorphous iron oxide was obtained.

Original languageEnglish (US)
Pages (from-to)2242-2243
Number of pages2
JournalJournal of the American Chemical Society
Issue number8
StatePublished - Feb 28 2007

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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