Paper Title:
The Synthesis of Maghemite and Hematite (γ-Fe2O3, α-Fe2O3) Nanospheres
  Abstract

Maghemite and hematite nanospheres were synthesized by using the Sol-gel technique. The structural properties of these nanosphere powders were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM),and pore size distribution.Hematite phase shows crystalline structures.The mean particle size that resulted from BET and XRD analyses were 4.9 nm and 2 nm. The field emission scanning electron microscopy shows iron-oxide powder is composed of nanosized particles, but in nanosized aggregates (agglomeration of particles). It can be seen from transmission electron microscopy that the size of the particles are very small which is in good agreement with the FESEM and the Xray diffraction. TEM and FESEM confirmed that the iron-oxide powder is composed of sizes from 8 nm to 10 nm. The BET and pore size method were employed for specific surface area determination.

  Info
Periodical
Materials Science Forum (Volumes 534-536)
Edited by
Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
Pages
157-160
DOI
10.4028/www.scientific.net/MSF.534-536.157
Citation
M.A. Dar, S.G. Ansari, R. Wahab, Y. S. Kim, H. S. Shin, "The Synthesis of Maghemite and Hematite (γ-Fe2O3, α-Fe2O3) Nanospheres", Materials Science Forum, Vols. 534-536, pp. 157-160, 2007
Online since
January 2007
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$32.00
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