Preparation of alpha-Fe2O3 nanostructures via simple ultrasound-assisted method


Hasanzadeh J., AZIZIAN-KALANDARAGH Y. , Khodayari A.

JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, cilt.14, ss.473-477, 2012 (SCI İndekslerine Giren Dergi) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14
  • Basım Tarihi: 2012
  • Dergi Adı: JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS
  • Sayfa Sayıları: ss.473-477

Özet

This study involves the preparation of alpha-Fe2O3(hematite) nanoparticles via simple and facile ultrasound-assisted method from aqueous solution of FeSO4 center dot 7H2O and NaOH in the presence of 3-MPA as a capping agent. X-ray diffraction analysis exhibits that the as-prepared product are in the phase of FeO(OH) and excellently crystallized alpha-Fe2O3 nanostructures have been formed after thermal annealing at 450 degrees C. Scanning electron microscope (SEM) images reveal that the product consisting of rod-like nanocrystallites of about 40nm width and 300nm length, which aggregated in the form of polydispersive clusters. The FT-IR absorption spectroscopy of the as-prepared nanostructures and annealed nanopowders were studied.