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Title: | Sensitivity enhancement for LPG detection by employing Cadmium oxide doped in nanocrystalline polyaniline |
Authors: | Roy A.S Anilkumar K.R Sasikala M Machappa T Ambika Prasad M.V.N. |
Keywords: | Cadmium oxide Ceramic LPG sensor Nanostructured polyaniline Time response |
Issue Date: | 2011 |
Citation: | Sensor Letters , Vol. 9 , 4 , p. 1342 - 1348 |
Abstract: | The Cadmium oxide doped nanocrystalline polyaniline (CdO/PANI) composite was prepared with various weight percentages of CdO by in situ polymerization method using aniline, ammonium persulfate and CdO as starting materials. The CdO/PANI composite was characterized by X-ray diffractometer and FTIR techniques. The SEM micrograph of the pure polyaniline shows irregular shaped granules of size ranging from 60-80 nm and that of CdO/PANI composites show granules of 0.60-0.65 ?m in size. The temperature dependent conductivity measurement shows the thermally activated exponential behavior of CdO/PANI composites. The selectivity is found to be maximum for LPG and moderate for CO 2 and ethanol. It is also seen that around 400 PPM v concentration of LPG, sensitivity is 75% for 50 wt% of CdO/PANI composites. Copyright © 2011 American Scientific Publishers All rights reserved. |
URI: | 10.1166/sl.2011.1679 http://gukir.inflibnet.ac.in:8080/jspui/handle/123456789/4506 |
Appears in Collections: | 1. Journal Articles |
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