Preparation and Gas-Sensing Properties of NdFeO3 Nanocrystalline
来源期刊：JOURNAL OF RARE EARTHS2003年第6期
论文作者：牛新书 蒋凯 杜卫平 杜卫民
Key words：gas-sensing material; NdFeO3; nan ocrystalline; rare earths;
Abstract: With the Nd2O3, Fe(NO3)3·9H2O, nitric acid(1∶1 vloume fraction) for the starting materials, rare earth composite oxide NdFeO3 with the structure of perovskite type was synthesized by sol-gel method in the system of citric acid. Structural characteristics were characterized by XRD and TEM which indicate that the sample is nanocrystallite with uniform grain size distribution and the a verage grain size is about 28 nm. Moreover, the gas sensing properties of the material were tested. The results show that NdFeO3 sensors have high sensitivity, excellent selectivity and quick response and recovery behavior to H2S, hence, this gas sensing material has a better prospects in industrial practice.
牛新书1，蒋凯1，杜卫平1，杜卫民1
(1.College of Chemistry & Environmental Science, Henan Normal University, Key Laboratory of Environmental Science and Engineering, Education Commission of Henan, Xinxiang 453002, China)
Abstract:With the Nd2O3, Fe(NO3)3·9H2O, nitric acid(1∶1 vloume fraction) for the starting materials, rare earth composite oxide NdFeO3 with the structure of perovskite type was synthesized by sol-gel method in the system of citric acid. Structural characteristics were characterized by XRD and TEM which indicate that the sample is nanocrystallite with uniform grain size distribution and the a verage grain size is about 28 nm. Moreover, the gas sensing properties of the material were tested. The results show that NdFeO3 sensors have high sensitivity, excellent selectivity and quick response and recovery behavior to H2S, hence, this gas sensing material has a better prospects in industrial practice.
Key words:gas-sensing material; NdFeO3; nan ocrystalline; rare earths;
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