Flexible Sensor Utilizing Polypyrrole Laser-Induced Graphene Nanocomposite for Room Temperature Ammonia Detection

This study explores the electrochemical modification of laser-induced graphene (LIG) by incorporating synthesized polypyrrole (PPy) nanocomposites (NCs). We propose a straightforward, and scalable approach for mass production of nanocomposites, resulting in PPy@LIG, which we employ in chemoresistive...

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Bibliographic Details
Main Authors: Santos-Ceballos, Jose Carlos, Salehnia, Foad, Romero, Alfonso, Vilanova, Xavier
Format: Conference Proceeding
Language:English
Subjects:
Ammonia
chronopotentiometry
gas sensing
Graphene
Laser-Induced Graphene
Nanocomposites
Polypyrrole
Sensitivity
Temperature
Temperature sensors
Three-dimensional displays
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Summary:This study explores the electrochemical modification of laser-induced graphene (LIG) by incorporating synthesized polypyrrole (PPy) nanocomposites (NCs). We propose a straightforward, and scalable approach for mass production of nanocomposites, resulting in PPy@LIG, which we employ in chemoresistive gas sensors capable of detecting ammonia (NH3) levels at room temperature. Gas exposure for 5 minutes demonstrates that PPy@LIG NCs exhibit sensitivity 14 times higher than that of pure LIG and up to 20 times higher in terms of the intensity of resistance changes for 100 ppm of NH3. Moreover, we achieve excellent repeatability in our results. The electrochemical synthesis, confirmed through chronopotentiometry, verifies the formation of PPy nanocomposites. In summary, this work presents the first-time utilization of PPy@LIG NCs for gas sensing, revealing promising characteristics for developing unattended gas-sensing networks for monitoring air quality.
ISSN:2168-9229
DOI:10.1109/SENSORS56945.2023.10325068