Sol-gel synthesized semiconducting LaCo0.8Fe0.2O3-based powder for thick film NH3 gas sensor

被引：32

作者：

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

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

Gedam, N. N. ^{[1
]}

Pawar, M. J. ^{[1
]}

Sangawar, V. S. ^{[2
]}

机构：

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

[2] GVISH, PG Dept Phys, Amravati 444602, MS, India

来源：

TALANTA | 2009年 / 78卷 / 03期

关键词：

LaCo0.8Fe0.2O3; Electrical and sensing properties; NH3; sensor; Selectivity; CO-SENSING PROPERTIES; AMMONIA SENSOR; ROOM-TEMPERATURE; OXIDE; SENSITIVITY; POLYANILINE; SYSTEM;

D O I：

10.1016/j.talanta.2009.01.030

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Perovskite type LaCoxFe1-xO3 nanoparticles was synthesized by a sol-gel citrate method. The structural, electrical and sensing characteristics of the LaCoxFe1-xO3 system were investigated. The Structural characteristics were performed by using X-ray diffraction (XRD) and transmission electron microscopy (TEM) to examine the phase and morphology of the resultant powder. The XRD pattern shows nanocrystalline solid solution of LaCoxFe1-xO3 with perovskite phase. Electrical properties of synthesized nanoparticles are studied by DC conductivity measurement. The sensor shows high response towards ammonia gas in spite of other reducing gases when x = 0.8. The effect of 0.3 wt.% Pd-doped LaCo0.8Fe0.3O3 on the response and a recovery time was also addressed. (c) 2009 Published by Elsevier B.V.

引用

页码：1136 / 1140

页数：5

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