Studies on the preparation and ethanol gas sensing properties of spinel Zn0.6Mn0.4Fe2O4 nanomaterials

被引：73

作者：

Kadu, A. V. ^{[1
]}

Jagtap, S. V. ^{[1
]}

Chaudhari, G. N. ^{[1
]}

机构：

[1] Shri Shivaji Sci Coll, Dept Chem, Nano Technol Res Lab, Amravati 444602, MS, India

来源：

CURRENT APPLIED PHYSICS | 2009年 / 9卷 / 06期

关键词：

Mn-Zn ferrite; Pd; Sensitivity; Response time; Ethanol vapour; ZNFE2O4; SEMICONDUCTORS; SENSITIVITY PROPERTIES; SENSOR; CO; SNO2; FERRITES; FILMS;

D O I：

10.1016/j.cap.2009.02.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zn1-xMnxFe2O4 (X = 0, 0.2 and 0.4) nanomaterials were synthesized by sol-gel citrate method and studied structural and gas sensing properties. The structural characteristics of synthesized nanomaterials were studied by X-ray diffraction measurement (XRD) and transmission electron microscope (TEM). The results revealed that the particle size is in the range of 30-35 nm for Mn-Zn ferrite with good crystallinity. The gas sensing properties were studied towards reducing gases like LPG, CH4, CO and ethanol and it is observed that Mn-Zn ferrite shows high response to ethanol at relatively lower operating temperature. The Zn0.6Mn0.4Fe2O4 nanomaterial shows better sensitivity towards ethanol at an operating temperature 300 degrees C. Incorporation of 1.5 wt.% Pd improved the sensitivity, selectivity, response time and reduced the operating temperature from 300 degrees C to 230 degrees C for ethanol sensor. The response time of 200 ppm ethanol in air is about 10s. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1246 / 1251

页数：6

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