Studies on Synthesis and Sensing Characteristics of Nanocrystalline La1-xSrxFeO3

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (6): 803.

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Studies on Synthesis and Sensing Characteristics of Nanocrystalline La_1-xSr_xFeO₃

WU Feng-Qing¹, XU Bao-Kun², LI Xi¹, SUO Hui¹, YANG Hua¹, ZHAO Mu-Yu¹

1. Department of Chemistry, Jilin University, Changchun, 130023;
2. Department of Electronics Engineering, Jilin University, Changchun, 130023

Received:1993-10-20 Revised:1994-02-23 Online:1994-06-24 Published:1994-06-24

Abstract

Abstract: Using citrate method, a series of nanocrystalline materials of composite oxides La_1-xSr_xFeO₃(x=0, 0.1, 0.2, 0.3, 0.4)were synthesized.These samples were characterized by XRD, IR, TGand DTA.The crystal structure is of perovskite-ype;The grain size is about 10-25 nm, The experimental results show that the grain sizes are related to the composition, calcination temperature and time, and nanocrystalline materials La_1-xSr_xFeO₃(x=0, 0.1)possess a high selectivity to ethanol, the order of selectivity is La_0.9Sr_0.1FeO₃>LaFeO₃(23nm)>LaFeO₃(110nm).

Key words: Nanocrystalline, Perovstite-type, Sensing character

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WU Feng-Qing, XU Bao-Kun, LI Xi, SUO Hui, YANG Hua, ZHAO Mu-Yu. Studies on Synthesis and Sensing Characteristics of Nanocrystalline La_1-xSr_xFeO₃[J]. Chem. J. Chinese Universities, 1994, 15(6): 803.

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Studies on Synthesis and Sensing Characteristics of Nanocrystalline La_1-xSr_xFeO₃

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