Abstract
In this study, the electrically conducting polyaniline-titanium(IV)phosphate (PANI-TiP) cation exchange nanocomposite was synthesized by sol-gel method. The cation exchange nanocomposite based sensor for detection of ammonia vapors was developed at room temperature. It was revealed that the sensor showed good reversible response towards ammonia vapors ranging from 3 to 6%. It was found that the sensor with p-toluene sulphonic acid ( p-TSA) doped exhibited higher sensing response than hydrochloric acid doped. This sensor has detection limit ≤1% ammonia. The response of resistivity changes of the cation exchange nanocomposite on exposure to different concentrations of ammonia vapors shows its utility as a sensing material. These studies suggest that the cation exchange nanocomposite could be a good material for ammonia sensor at room temperature.
| Original language | English |
|---|---|
| Pages (from-to) | 2037-2042 |
| Number of pages | 6 |
| Journal | Journal of Hazardous Materials |
| Volume | 186 |
| Issue number | 2-3 |
| DOIs | |
| State | Published - 28 Feb 2011 |
| Externally published | Yes |
Bibliographical note
Funding Information:Authors are thankful to the Ministry of Environment and Forests of India (project grant no. 19-36/2007-RE ) and Department of Applied Chemistry for providing financial support and research facilities.
Keywords
- Ammonia sensor
- Cation exchanger
- Composite
- Electrical conductivity
- Polymer
ASJC Scopus subject areas
- Environmental Engineering
- Environmental Chemistry
- Waste Management and Disposal
- Pollution
- Health, Toxicology and Mutagenesis