Nanocrystalline Ce doped CoFe2O4 as an acetone gas sensor

被引：75
作者：
Khandekar, M. S. [1 ]
Tarwal, N. L. [2 ,3 ]
Mulla, I. S. [4 ]
Suryavanshi, S. S. [1 ]
机构：
[1] Solapur Univ, Dept Phys, Ferrite Mat Lab, Solapur 413255, India
[2] Gwangju Inst Sci & Technol, Res Inst Solar & Sustainable Energies RISE, Kwangju 500712, South Korea
[3] Gwangju Inst Sci & Technol, Sch Informat & Commun, Kwangju 500712, South Korea
[4] Natl Chem Lab, Div Phys Chem, Pune 411008, Maharashtra, India
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 01期
关键词：
Ferrite; CoFe2O4; Gas sensor; Molten-salt method; TEM; ZNO THIN-FILMS; SENSING PROPERTIES; FERRITE NANOPARTICLES; MAGNETIC-PROPERTIES; COBALT FERRITE; SURFACE; CO; PERFORMANCE; CU;
D O I：
10.1016/j.ceramint.2013.06.021
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nanocrystalline CoFe2-xCexO4 ferrites (x=0, 0.04, 0.08) were synthesized by using the inexpensive, simple and eco-friendly molten-salt (M-S) method. Effects of Ce doping on the structural, morphological and gas sensing properties of the CoFe2O4 ferrite were investigated. X-ray diffraction (XRD) analysis revealed the formation of spinel CoFe2O4. Transmission electron microscopy (TEM) investigations showed that the synthesized ferrite is made up of very fine spherical nanoparticles. Furthermore, the gas response of nanocrystalline ferrite materials was investigated in the temperature range of 200-450 degrees C toward the reducing gases like liquefied petroleum gas (LPG), acetone, ethanol and ammonia. The sensor response was found to be sensitive and selective toward acetone as compared to other reducing gases. It is observed that the addition of Ce (4 wt%) strongly influenced the response and the operating temperature of the sensor material and thus can serve as acetone-sensing sensors. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：447 / 452
页数：6
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