bullet Sensors & Transducers Journal

    (ISSN 1726- 5479)


2007 e-Impact Factor

25 Top Downloaded Articles

Journal Subscription 2009/2010

Editorial Calendar 2009

Submit an Article

Editorial Board

Current Issue

Sensors and Transducers journal's cover


Sensors & Transducers Journal 2007

2000-2002 S&T e-Digest Contents

2003 S&T e-Digest Contents

2004 S&T e-Digest Contents

2005 S&T e-Digest Contents

2006 S&T e-Digest Contents


Best Articles 2007




Vol. 98, Issue 11, November 2008, pp.26-37





CO Sensing Properties of Nanostructured La0.8Sr0.2CoO3 Sensors Synthesized by EDTA-Glycol Method

G. N. Chaudhari, A. B. Bodade, S. V. Jagatap, M. J. Pawar

Nano Technology Research Laboratory, Dept. of Chemistry,
Shri. Shivaji Science College, Amravati M. S. India

E-mail: mjpawar@hotmail.com



Received: 21 April 2008   /Accepted: 17 November 2008   /Published: 30 November 2008



Abstract: We report a simple method for the preparation of pure LaCoO3 and La1-xSrxCoO3 (x = 0.1, 0.2 and 0.25) nanostructures by the EDTA-Glycol method. The final powders obtained by this method have been investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM) measurements. The gas sensitivity of pure and Sr doped LaCoO3 samples were investigated for CO, NH3, H2 and LPG. La0.8Sr0.2CoO3 powders (sample GIII) calcined at 6500C, exhibited a good sensor response towards CO gas at 2500C. On impregnation of 1 wt.% Pd over sample GIII, the operation temperature reduced to 2000C with a significant rise in sensitivity. The response time also decreases from about 3.5 min for sample GIII to less than 2.5 min for the Pd loaded element. The electronic interaction between Pd and metal oxide semiconductor is proposed to account for the sensitization effect.


Keywords: EDTA-Glycol method, Perovskite, Sensitivity, Selectivity


 Acrobat reader logo Click <here> or title of paper to download the full pages article (594 Kb)





1999 - 2008 Copyright , International Frequency Sensor Association (IFSA). All Rights Reserved.

Home - News - Links - Archives - Tools - Standardization - Patents - Marketplace - Projects - Wish List - Subscribe - Search - e-Shop - Membership

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Sensor Jobs - Site Map