@article{ajst2017412,
author={{Yeole, Bharati and Sen, Tanushree and Hansora, Dharmesh and Mishra, Satyendra},
title={Electrical and Gas Sensing Behaviour of Polypyrrole/silver Sulphide Nanocomposites},
journal={American Journal of Sensor Technology},
volume={4},
number={1},
pages={10--20},
year={2017},
url={http://pubs.sciepub.com/ajst/4/1/2},
issn={2373-3462},
abstract={We investigated the room temperature NH<SUB>3</SUB> sensing performance of polypyrrole/silver sulphide (PPy/Ag<SUB>2</SUB>S) nanocomposites (NCs). Sonochemically synthesized Ag<SUB>2</SUB>S nanoparticles (80-100 nm) were incorporated into the PPy matrix via ultrasound-assisted <i>in-situ</i> polymerization. The resulting PPy/Ag<SUB>2</SUB>S NCs were evaluated based on structural, morphological, and electrical properties. Microscopy results revealed a uniform dispersion of Ag<SUB>2</SUB>S nanoparticles in the PPy matrix. We studied the effect of Ag<SUB>2</SUB>S nanoparticle concentration on the electrical properties and gas sensing performance of the PPy/Ag<SUB>2</SUB>S NCs. The current-voltage (I-V) characteristics revealed the semiconducting nature of the PPy/Ag<SUB>2</SUB>S NCs. An improvement in the electrical conductivity was observed for the PPy/Ag<SUB>2</SUB>S NC with 3 wt% Ag<SUB>2</SUB>S nanoparticle content. PPy/Ag<SUB>2</SUB>S NCs were further tested for detection of NH<SUB>3</SUB> in ambient conditions. The PPy/Ag<SUB>2</SUB>S NCs exhibited excellent sensor response towards 100 ppm NH<SUB>3</SUB> concentration at room temperature.},
doi={10.12691/ajst-4-1-2}
publisher={Science and Education Publishing}
}