Table of Contents
ISRN Nanotechnology
Volume 2012 (2012), Article ID 879480, 6 pages
http://dx.doi.org/10.5402/2012/879480
Research Article

Preparation and Ethanol Sensing Properties of ZnO Nanoparticles via a Novel Sol-Gel Method

1Materials and Energy Research Center, P.O. Box 31787-316, Karaj, Iran
2Amirkabir University of Technology, 424 Hafez Ave, P.O. Box 15875-4413, Tehran, Iran

Received 26 October 2011; Accepted 8 December 2011

Academic Editors: R. Alexandrescu and D. Tsoukalas

Copyright © 2012 A. Ahmadi Daryakenari et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

ZnO nanoparticles were prepared using a novel sol-gel method. Chemical reactions were carried out between zinc acetate and methanol under ambient conditions using monoethanol amine (MEA) as surfactant and subsequent heating at 2 0 0 C . The powders were calcined, pressed into pellets, and presintered. The properties of the product were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) spectra. For gas sensing experiment, ethanol was used as testing gas. The gas sensing results showed that the maximum value for detecting of 1000 ppm ethanol vapor was 25 at an operating temperature of 3 7 0 C .