Sensors & Transducers Journal

    (ISSN 1726- 5479)

Vol. 73, Issue 11, November 2006, pp. 819-825

Effective Factors on Methane Sensing of Tin-Oxide Activated by Palladium in Sol-Gel Process

Davood Abbaszadeh^a, Roghayeh Ghasempour^a, Fereshteh Rahimi^a, Azam Iraji zad^a,b

^aDepartment of Physics, Sharif University of Technology, Tehran, P.O.Box 11365-9161, Iran

^bInstitute for Nanoscience and Technology (INST), Sharif University of Technology, Tehran, P.O.Box 11365-9161, Iran

Tel.: ++98-21-66164513, fax: ++98-21-6602 2711

E-mail: Iraji@sharif.edu, http://sharif.edu/~iraji/

Received: 8 October 2006   /Accepted: 30 November 2006   /Published: 4 December 2006

Abstract: Stannic oxide thin films activated by palladium were prepared by sol-gel method. The morphology of the layers and the size of the particles were investigated by scanning electron microscopy and atomic force microscopy. Investigations showed that the number of coating, annealing procedure and the viscosity of the sol, affect structure and thickness of the layers. These different preparing conditions result in different change in resistivity of the samples toward methane gas. In addition to these parameters, the Pd/Sn atomic ratio in the sol is another effective factor on sensitivity of methane.

Keywords: Methane sensor, SnO₂ nanoparticle, Palladium, Sol-gel

Click <here> or title of paper to download the full pages article (280 K)

1999 - 2006 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