Easy synthesis and characterization of single-crystalline hexagonal prism-shaped hematite α-Fe2O3 in aqueous media

Nitin Kaduba Chaudhari; Hyoung Chan Kim; Derac Son; Jong-Sung Yu

doi:10.1039/B910569G

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CrystEngComm

Issue 11, 2009

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Easy synthesis and characterization of single-crystalline hexagonal prism-shaped hematite α-Fe₂O₃ in aqueous media

Nitin Kaduba Chaudhari , Hyoung Chan Kim , Derac Son and Jong-Sung Yu

CrystEngComm, 2009, 11, 2264-2267

DOI: 10.1039/B910569G
Received 28 May 2009, Accepted 02 Jul 2009
First published on the web 24 Jul 2009

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Abstract
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A simple, mild and environmentally friendly one-pot aqueous synthesis route using urea devoid of surfactant and chelating agents is demonstrated for the first time to fabricate high yield crystalline uniform hexagonal prism-shaped weakly magnetic α-Fe₂O₃ nanocrystals. As synthesized α-Fe₂O₃ nanocrystals show ferromagnetic behavior with coercivity values of 0.8 and 0.2 T at 5 and 300 K, respectively. The urea and reaction temperature plays a crucial role, regulating the morphology and the size.

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SEM, HR-TEM, N2 adsorption–desorption isotherms andZFC/FC curve
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Easy synthesis and characterization of single-crystalline hexagonal prism-shaped hematite α-Fe₂O₃ in aqueous media

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