Advances in Natural Sciences Nanoscience and Nanotechnology · 2019 · 17 citations · 10 references
NanosensorsEngineeringGas SensorChemistrySensor TechnologyChemical EngineeringCarbon-based MaterialSensing (Sensor Engineering)InstrumentationNanosensorWo3 NanobricksCarbon-based FilmsCarbon NanotubesHybrid MaterialsChemical SensorMaterials ScienceGas DetectionNh3 GasSensorsNanomaterialsSensor DesignNanotubesFunctional MaterialsMulti-walled Carbon Nanotubes
Multi-walled carbon nanotubes (MWCNTs) were prepared by thermal chemical vapor deposition at 750 °C, and WO3 nanobricks with an average size of 80 nm were synthesized by a hydrothermal route. MWCNTs and WO3 were mixed at different mass ratios in dimethylformamide solution to obtain composite materials. The WO3/MWCNT composite-based sensors were used for detection of NH3 gas. The gas-sensitive properties of the sensors were compared with those of pure CNT- and WO3-based sensors. The fabricated WO3/CNT composite sensors exhibited higher response, and faster response/recovery time than the other sensors at room temperature. In this work a possible mechanism conducting to the improvement of the hybrid sensors performance is proposed.
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TiO2 thin film gas sensor for monitoring ammonia
B. Karunagaran, Periyayya Uthirakumar, S. J. Chung et al. · Materials Characterization · 2007 · 387 citations
Chemical Engineering, Environmental Monitoring, Engineering +6