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CuO/SnO2 Mixed Nanofibers for H2S Detection
Journal of Nanoscience and Nanotechnology
|January 5, 2016
Summary
Copper oxide/tin oxide (CuO/SnO2) mixed nanofibers show high sensitivity to hydrogen sulfide (H2S) gas. These novel nanofibers offer rapid detection, making them promising for H2S gas sensing applications.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Sensing
Background:
- Developing advanced gas sensors is crucial for environmental monitoring and industrial safety.
- Metal oxide nanofibers offer unique properties for gas detection applications.
Purpose of the Study:
- To synthesize copper oxide/tin oxide (CuO/SnO2) mixed nanofibers.
- To investigate their gas sensing properties for hydrogen sulfide (H2S) detection.
Main Methods:
- Electrospinning technique using two needles was employed for nanofiber synthesis.
- Thermogravimetric-differential thermal analysis optimized the calcination temperature to 700°C.
- Gas sensing performance was evaluated at various operating temperatures and H2S concentrations.
Main Results:
- Intermixed CuO/SnO2 nanofibers were successfully synthesized.
- The sensor exhibited high sensitivity to H2S, with a response of 522 for 10 ppm H2S.
- A rapid response time of 1 second was achieved at 300°C.
Conclusions:
- The synthesized CuO/SnO2 mixed nanofibers demonstrate excellent H2S sensing capabilities.
- The observed high response is attributed to the semiconductor-metal transition of CuO.
- These nanofibers are a promising material for developing efficient H2S gas sensors.
