Graphene Loading with Polypyrrole Nanoparticles for Trace-Level Detection of Ammonia at Room Temperature
Juan Casanova‐Cháfer, Polona Umek, Selene Acosta, Carla Bittencourt, Eduard Llobet
Abstract
exposure to assess the PPy aging and the changes induced in their physicochemical and electronic properties. Specifically, the gas sensor was tested during a 5-month period, demonstrating significant stability over time, since just a slight decrease (11%) in the responses was registered. In summary, the present work reports for the first time the use of PPy NPs decorating graphene for gas-sensing purposes, revealing promising properties for the development of unattended gas-sensing networks for monitoring air quality.
Topics & Concepts
GrapheneMaterials sciencePolypyrroleX-ray photoelectron spectroscopyNanoparticleRaman spectroscopyNanotechnologyDetection limitNanocompositeChemical engineeringPolymerComposite materialPolymerizationChemistryChromatographyPhysicsOpticsEngineeringGas Sensing Nanomaterials and SensorsAdvanced Chemical Sensor TechnologiesAnalytical Chemistry and Sensors