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Preparation of a Novel Spherical Nano-sized Iron Oxide |
HAO Suju( ), GAO Yice, JIANG Wufeng( ), SUN Tianhao, ZHANG Yuzhu |
School of Metallurgy and Energy, North China University of Science and Technology, Ministry of Education Key Laboratory of Modern Metallurgy Technology, Tangshan 063009, China |
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Cite this article:
HAO Suju, GAO Yice, JIANG Wufeng, SUN Tianhao, ZHANG Yuzhu. Preparation of a Novel Spherical Nano-sized Iron Oxide. Chinese Journal of Materials Research, 2022, 36(12): 887-892.
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Abstract A novel spherical nano-ferric oxide of 40~60 nm in diameter was prepared by pyrolysis precursor method, with Fe (NO3)3·9H2O as raw material and urea as precipitator. The prepared spherical nano-sized ferric oxide was characterized by XRD, SEM and EDS. The effect of Fe3+ concentration, reaction temperature and other factors on the particle size and morphology of nano-sized ferric oxide were investigated. The preparation conditions of nano-sized ferric oxide were determined and the formation mechanism of nano-sized ferric oxide was also analyzed. The results show that the crystallinity and particle size of nano-sized ferric oxide increase with the increase of temperature. The concentration of Fe (NO3)3·9H2O has little effect on the particle size and morphology of the prepared nano-sized iron oxide. The formation mechanism of spherical ferric oxide nanoparticles is as follows: the iron source hydrolysates and crystallizes under hydrothermal conditions to generate brownish yellow flocculant precipitation FeOOH, and FeOOH dissolves and recrystallizes in conditions of high temperature and high pressure further to generate spherical ferric oxide nanoparticles.
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Received: 29 April 2021
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Fund: National Natural Science Foundation of China(51274084);Hebei Natural Science Foundation(E2018209323);Hebei Natural Science Foundation(E2022209125) |
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