Hydrothermal Synthesis and Charaction of α-Fe₂O₃ Mesocrystals and Nanorings

Abstract:

α-Fe₂O₃ mesocrystals and nanorings have been prepared by hydrothermal method, using phosphate and sulfate ions as additives. Hydrothermal treated at 180 °C for 24 h in presence of C₃H₈NO₆P and Na₂SO₄ leads to the formation of capsule-shaped α-Fe₂O₃ mesocrystals, when the reaction time prolonged to 96 h α-Fe₂O₃ nanorings formed. It can tune the size and morphology of the final products by varying the ratios of phosphate and sulfate ions to ferric ions. XRD, SEM, TEM, HRTEM, UV-Vis, FT-IR were used to characterize the products. A formation process involving the selective adsorption and the cooperative coordination effect have been deduced.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 886-890
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.886
• Online since: May 2011
• Authors: Bin Deng, Qiang Guo Li, Cun Chang Wang
• Keywords: Cooperative Coordination Effect, Hydrothermal, Nanorings, Selective Adsorption, α-Fe₂O₃ Mesocrystals

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