Synthesis of ZnO Nanocrystalline Powder From Ultrasonic Atomization Technique, Characterization, and its Application in Gas Sensing

Author

Patil, Lalchand A. ; Bari, Anil R. ; Shinde, Mahendra D. ; Deo, Vinita V. ; Amalnerkar, Dinesh P.

Author_Institution

Dept. of Phys., Pratap Coll., Amalner, India

Volume

11

Issue

4

fYear

2011

fDate

4/1/2011 12:00:00 AM

Firstpage

939

Lastpage

946

Abstract

Nanocrystalline zinc-oxide (ZnO) powders were prepared from the ultrasonic atomization method. An aqueous solution was atomized by using the ultrasonic atomizer operating at 2.1 to 2.3 MHz. The generated droplets were fed to the reaction furnace for pyrolysis. Nanocrystalline ZnO crystallites were collected by using a simple but novel trapping system, and prepared powder was characterized using X-ray diffractogram, transmission electron microscopy, scanning electron microscopy, and absorption spectroscopy. Nanostructured thick-film sensors of this powder were prepared by using the screen printing technique. The gas sensing performance of this film was tested. The sensor was found to be most sensitive to NH₃. The results were discussed and interpreted.

Keywords

gas sensors; nanostructured materials; spectra; zinc compounds; X-ray diffractogram; absorption spectroscopy; frequency 2.1 MHz to 2.3 MHz; gas sensing; generated droplets; nanocrystalline powder; pyrolysis; reaction furnace; scanning electron microscopy; transmission electron microscopy; ultrasonic atomization technique; ${rm NH}_{3}$ sensing; Nanostructured film sensor; nanostructured zinc–oxide; ultrasonic atomization;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2010.2066265

Filename

5582161