Graphene-PEDOT:PSS Sensors for Acetone Detection
Author Information
Author(s): Thaibunnak Ananya, Rungruang Suvanna, Pakdee Udomdej, Bednarski Henryk
Primary Institution: Rajamangala University of Technology Krungthep, Thailand
Hypothesis
Can inkjet-printed graphene-PEDOT:PSS sensors decorated with ZnO nanoparticles effectively detect acetone at room temperature?
Conclusion
The study found that the ZnO@graphene-PEDOT:PSS gas sensor exhibited a high sensitivity of 71.9% for acetone detection at room temperature.
Supporting Evidence
- The sensor showed a limit of detection of 0.4 ppm for acetone.
- Response and recovery times for the sensor were approximately 4.6 min and 4.2 min, respectively.
- The sensor demonstrated high selectivity for acetone over other gases like ammonia and toluene.
- ZnO nanoparticles were successfully decorated on the graphene-PEDOT:PSS surface, enhancing sensitivity.
Takeaway
Researchers created a special sensor that can detect acetone, a chemical found in breath, using a simple printing method. This sensor works well even at room temperature.
Methodology
The sensors were made using inkjet printing followed by a metal sparking process to decorate graphene-PEDOT:PSS with ZnO nanoparticles.
Limitations
The study does not address the long-term stability of the sensors beyond 8 weeks.
Digital Object Identifier (DOI)
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