Preparation and Catalytic Property of Single Crystal Multiporous α-Fe2O3 Nanorods

doi:10.3724/SP.J.1077.2008.00459

Abstract

Abstract: The α-FeOOH nanorods were prepared via hydrothermal reaction of Fe(NO₃)₃·9H₂O and KOH at
100℃ for 6h. Then the α-FeOOH nanords were heat treated at different temperautres, and single crystalline and multiporous α-Fe₂O₃nanorods were obtained. The phase and morphology of the samples were characterized by XRD and TEM. The heat treatment process was investigated by TGA and FT-IR. The results show that the phase transition of α-FeOOH→α-Fe₂O₃ occurrs between 239℃ and 259.1℃. The α-Fe₂O₃ still keeps in rod shape and lots of holes appear on the surface which disappear with the temperature increasing. The catalytic performance of α-Fe₂O₃ nanorods was studied by decomposition of ammonium perchlorate(AP) based on DTA. The higher-temperature of exothermic peak of AP shifts towards low temperature when α-Fe₂O₃ nanorods are introduced into the reaction, and the largest decrement reaches 71.4℃ for the α-Fe₂O₃ nanorods heat treated at 350℃.

Key words: heat treatment, phase transition, ammonium perchlorate, catalytic performance

CLC Number:

TB383

ZHANG Yi,XU Gang,OU Ping,HAN Gao-Rong. Preparation and Catalytic Property of Single Crystal Multiporous α-Fe₂O₃ Nanorods[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.00459.

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Preparation and Catalytic Property of Single Crystal Multiporous α-Fe₂O₃ Nanorods

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