Hollow SnO2 nanotubes as a gas sensor for detection of 3-vinylpyridine

Hollow SnO 2 nanotubes were prepared via electrospinning and integrated with a simple gas sensor for the detection of hazardous 3-vinylpyridine(3-EP) in environmental settings. Benefiting from the hollow nanotube structure, the sensor provides a large surface area for gas adsorption, significantly enhancing the response value and reducing the operating temperature. At the optimal temperature of 240 °C and a gas concentration of 50 ppm, the response value reaches 21.13. The detection limit is 0.5 ppm, response time, and desorption time are 17 s and 22 s. This study provides a reference for the detection of harmful 3-EP in environmental monitoring.