Hydrothermal Synthesis and Gas Sensing Properties of α-Fe2O3 Hollow Microspheres and Nanorods

Xia Lei Ye; Guo Han Liu; Yu Zhe Song; Gen Liang Han; Qi Hai Lu; Bin Liu; Yun Fu Wang; Gon Gong Li

doi:10.4028/www.scientific.net/AMR.343-344.177

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 343-344Hydrothermal Synthesis and Gas Sensing Properties...

Hydrothermal Synthesis and Gas Sensing Properties of α-Fe₂O₃ Hollow Microspheres and Nanorods

Abstract:

α-Fe₂O₃ hollow microspheres and nanorods were synthesized via a hydrothermal method using glucose and ethylenediaminetetraacetic acid (EDTA) as morphology controlled agents, followed by calcination at 500 °C for 4 h in air. The crystal structures of products were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that the hollow microspheres with diameters of 1-2 μm are consist of nanoparticles (80-100 nm), and the nanorods have a structure in the diameter of 80-100 nm and length about 1 μm. Furthermore, the α-Fe₂O₃ hollow microspheres show higher gas response to ethanol than that of nanorods and nanoparticles.

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Periodical:

Advanced Materials Research (Volumes 343-344)

Pages:

177-180

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.343-344.177

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Online since:

September 2011

Authors:

Xia Lei Ye, Guo Han Liu, Yu Zhe Song, Gen Liang Han, Qi Hai Lu, Bin Liu, Yun Fu Wang, Gon Gong Li

Keywords:

EDTA, Glucose, Hollow Microspheres, Nanorod, α-Fe₂O₃

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