An ultrasensitive isoprene gas sensor based on the In<sub>2</sub>O<sub>3</sub>/MoS<sub>2</sub> nanocomposite prepared by hydrothermal synthesis
Cheng Zhang, Jiuhong Wang, Ze Zhang, Jin Gong, Hairong Wang
Abstract
composite with a mol ratio of 6 : 4. The composite was characterized by EDS and XRD to confirm the element types and crystal types. The isoprene sensor was prepared by dipping the composite suspension on a ceramic substrate integrated with a sensing electrode and heating unit. The testing results of the sensor showed the highest response value of 1.8 to 100 ppb isoprene at 200 °C. Besides, the low detecting limit (less than 5 ppb isoprene) and excellent selectivity are also revealed, showing that the composite can be a good candidate sensing material for isoprene for application in breath analysis.
Topics & Concepts
IsopreneHydrothermal circulationNanocompositeComposite numberDetection limitMaterials scienceSelectivityCeramicSubstrate (aquarium)Chemical engineeringNanotechnologyChemistryComposite materialChromatographyOrganic chemistryCatalysisCopolymerGeologyPolymerOceanographyEngineeringGas Sensing Nanomaterials and SensorsAdvanced Chemical Sensor TechnologiesAnalytical Chemistry and Sensors