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Hydrothermal synthesis of 3D urchin-like α-Fe2O3 nanostructure for gas sensor

Author:
Peng SunAuthor Vitae   Weinan WangAuthor Vitae   Yinping LiuAuthor Vitae   Yanfeng Sun   syf@jlu.edu.cnAuthor Vitae   Jian MaAuthor Vitae   Geyu Lu   lugy@jlu.edu.cnAuthor Vitae  


Journal:
Sensors & Actuators: B. Chemical


Issue Date:
2012


Abstract(summary):

Urchin-like α-Fe2O3 nanostructures were obtained by a facile chemical solution route combined with subsequent calcination process. The images of field emission scanning electron microscopy and transmission electron microscopy indicated that these nanostructures were composed of one-dimensional nanorods with the diameter of about 40-50 nm and the length of about 800 nm. When tested as sensing materials for gas sensors, these α-Fe2O3 nanostructures exhibited high response, good response and recovery characteristics to ethanol at the operating temperature of 260 °C. The response time was about 2 s to 100 ppm ethanol.


Page:
52-57


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