T5.1.4 - Room Temperature CO2 Gas Sensor Based on Carbon Polymer Dots - PEDOT: PSS Composite Thin Film
- Event
- EUROSENSORS XXXVII
2025-09-07 - 2025-09-10
Wroclaw - Band
- Lectures
- Chapter
- T5.1 - Gas Sensors 3
- Author(s)
- A. M. Laera, G. Cassano, M. Penza - ENEA - Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Brindisi (Italy)
- Pages
- 128 - 129
- DOI
- 10.5162/EUROSENSORS2025/T5.1.4
- ISBN
- 978-3-910600-07-2
- Price
- free
Abstract
A green synthetic method was developed to produce carbon polymer dots with a high content of amino groups. A composite material, obtained dispersing the synthetized dots in the conductive polymer matrix PEDOT:PSS (Poly(3,4-EthyleneDiOxyThiophene) PolyStyrene Sulfonate), was used to fabricate a low-cost, flexible chemiresistive gas sensor for CO₂ detection in the concentration range 150-3000 ppm.The sensor device showed high response and good repeatability upon CO₂ exposure at room tempera-ture with negligible responses towards CO. Being a stronger Lewis acid, the CO₂ can accept lone pairs of electrons from amino groups on carbon dots surface.