Gas sensing properties of magnesium ferrite prepared by co-precipitation method

被引：80

作者：

Hankare, P. P. ^{[1
]}

Jadhav, S. D. ^{[1
]}

Sankpal, U. B. ^{[1
]}

Patil, R. P. ^{[1
]}

Sasikala, R. ^{[2
]}

Mulla, I. S. ^{[3
]}

机构：

[1] Shivaji Univ, Dept Chem, Kolhapur 416004, Maharashtra, India

[2] Bhabha Atom Res Ctr, Div Chem, Bombay 400085, Maharashtra, India

[3] Natl Chem Lab, Pune, Maharashtra, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 488卷 / 01期

关键词：

Ferrites; Gas sensor; X-ray diffraction and scanning electron microscopy; EMISSIONS; OXIDE; NANOPARTICLES; SENSOR;

D O I：

10.1016/j.jallcom.2009.08.103

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polycrystalline magnesium ferrite (MgFe2O4) was prepared by the co-precipitation method. The synthesized compound was characterized for their phase and morphology by X-ray diffraction and scanning electron microscopy, respectively. Conductance responses of the (MgFe2O4) were measured towards gases like hydrogen sulfide (H2S), liquefied petroleum gas (LPG), ethanol vapors (C2H5OH), SOx, H-2, NOx, NH3, methanol, acetone and petrol. The gas sensing characterstics were obtained by measuring the sensitivity as a function of various controlling factors like operating temperatures and concentrations of gases. It was found that the sensor exhibited various responses towards these gases at different operating temperatures. Furthermore; the MgFe2O4 based sensor exhibited a fast response and a good recovery towards petrol at temperature 250 degrees C. The results of the response towards petrol reveal that (MgFe2O4) synthesized by a simple co-precipitation method, would be a suitable material for the fabrication of the petrol sensor. (C) 2009 Published by Elsevier B.V.

引用

页码：270 / 272

页数：3

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