Gas Sensing Properties of Nanocrystalline Nd1-xCaxFeO3

Xiang Wei Kong; Hong Wei Qin; Ling Zhang; Li Hui Sun; Ji Fan Hu

doi:10.4028/www.scientific.net/KEM.495.327

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 495Gas Sensing Properties of Nanocrystalline...

Gas Sensing Properties of Nanocrystalline Nd1-xCaxFeO₃

Abstract:

The nanocrystalline powders Nd_1-xCa_xFeO₃ prepared by sol-gel method crystallized as perovskite orthorhombic structure. The mean grain size of Nd_1-xCa_xFeO₃ powders were about 15~ 40 nm. The conductivity of the Ca doped samples was enhanced, compared to that of the undoped. The Nd_0.9Ca_0.1FeO₃-based sensor showed good gas sensing properties to ethanol and acetone. The responses of the Nd_0.9Ca_0.1FeO₃-based sensor to 600ppm ethanol and acetone were about 158.4 at 220°C and 61.7 at 240°C, respectively.

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Periodical:

Key Engineering Materials (Volume 495)

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327-330

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.495.327

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Online since:

November 2011

Authors:

Xiang Wei Kong, Hong Wei Qin, Ling Zhang, Li Hui Sun, Ji Fan Hu

Keywords:

Gas Sensor, Nanomaterial, Perovskite

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