Synthesis and Characterization of Nanosized Fe 2 O 3 Pigments

  • Fouda M
  • El-Kholy M
  • Moustafa S
  • et al.
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Abstract

The work in this paper was devoted to investigating some nanosized iron oxide pigments prepared by microemulsion technique. The role of concentration of iron salt and surfactant (cetyltrimethylammonium bromide) on the produced iron oxide was studied. The techniques employed to characterize the samples were thermogravimetric analysis, X-ray diffractometry, transmission electron microscope, infrared spectroscopy, and diffuse reflectance spectroscopy. The results revealed that the particle size of the prepared sample using 0.2 M iron sulfate and 3.2 wt% of surfactant was in the range 7–9 nm. Increasing the concentration of either iron salt or the surfactant increased the particle size of the obtained ferric oxide. The diffuse reflectance measurements showed that the charge transfer/electron pair transition absorption peak, which is closely related to the reddish color of the oxide, was shifted to a longer wavelength (blue shift) by decreasing the dimension of the particles. The samples were tested as pigments. They showed different tints of red color and were found to be promising for applications as pigments in the field of paint manufacturing.

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Fouda, M. F. R., El-Kholy, M. B., Moustafa, S. A., Hussien, A. I., Wahba, M. A., & El-Shahat, M. F. (2012). Synthesis and Characterization of Nanosized    Fe  2  O 3    Pigments. International Journal of Inorganic Chemistry, 2012, 1–9. https://doi.org/10.1155/2012/989281

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