Influence of Ta 2 O 5 on polyaniline surface for liquid petroleum gas sensing applications

Influence of Ta 2 O 5 on polyaniline surface for liquid petroleum gas sensing applications Purpose – The purpose of this paper is to study the sensitivity and selectivity properties of polyaniline/tantalum pentoxide (PANI/Ta 2 O 5 ) composite to liquid petroleum gas (LPG). Design/methodology/approach – Polyaniline/tantalum pentaoxide (PANI/Ta 2 O 5 ) composites were synthesized by in situ chemical polymerization method using ammonium persulphate as an oxidizing agent. This is the novel polymerization process for the direct synthesis of emeraldine salt phase of the polymer. The composites were characterized by FTIR, XRD and SEM. Temperature dependence conductivity of the composites shows thermally activated behaviour. Sensitivity and selectivity of the composites are studied. Findings – The PANI/ Ta 2 O 5 composites of 20 wt% and 30 wt% are showing maximum change in resistance against time when compared to pure PANI and other polyaniline composites when exposed to LPG. The 20 wt % composites show maximum sensitivity of 83% to LPG. The selectivity studies reveals that LPG could be sensed better when compared to oxyacetylene and other test gases. Practical implications – Selectivity studies have been carried out and the sensor proved to be better than metal oxides sensors. Social implications – The sensing material is of low cost. Originality/value – To the best of the authors' knowledge, studies on Ta 2 O 5 ‐based gas sensor have not been reported previously. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Sensor Review Emerald Publishing

Influence of Ta 2 O 5 on polyaniline surface for liquid petroleum gas sensing applications

Loading next page...
 
/lp/emerald-publishing/influence-of-ta-2-o-5-on-polyaniline-surface-for-liquid-petroleum-gas-1HJUqSn34D
Publisher
Emerald Publishing
Copyright
Copyright © 2012 Emerald Group Publishing Limited. All rights reserved.
ISSN
0260-2288
DOI
10.1108/02602281211209455
Publisher site
See Article on Publisher Site

Abstract

Purpose – The purpose of this paper is to study the sensitivity and selectivity properties of polyaniline/tantalum pentoxide (PANI/Ta 2 O 5 ) composite to liquid petroleum gas (LPG). Design/methodology/approach – Polyaniline/tantalum pentaoxide (PANI/Ta 2 O 5 ) composites were synthesized by in situ chemical polymerization method using ammonium persulphate as an oxidizing agent. This is the novel polymerization process for the direct synthesis of emeraldine salt phase of the polymer. The composites were characterized by FTIR, XRD and SEM. Temperature dependence conductivity of the composites shows thermally activated behaviour. Sensitivity and selectivity of the composites are studied. Findings – The PANI/ Ta 2 O 5 composites of 20 wt% and 30 wt% are showing maximum change in resistance against time when compared to pure PANI and other polyaniline composites when exposed to LPG. The 20 wt % composites show maximum sensitivity of 83% to LPG. The selectivity studies reveals that LPG could be sensed better when compared to oxyacetylene and other test gases. Practical implications – Selectivity studies have been carried out and the sensor proved to be better than metal oxides sensors. Social implications – The sensing material is of low cost. Originality/value – To the best of the authors' knowledge, studies on Ta 2 O 5 ‐based gas sensor have not been reported previously.

Journal

Sensor ReviewEmerald Publishing

Published: Mar 23, 2012

Keywords: Sensors; Gases; Liquefied petroleum gas; Polymerisation; Polyaniline/tantalum pentaoxide; Sensitivity; Selectivity; Oxyacetylene gas

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create folders to
organize your research

Export folders, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off