Synthesis of V2O5-SnO2 Nanocomposite for NH3 Detection at Low Temperature

The V2O5-SnO2 nanocomposite was synthesized through a combination of hydrothermal synthesis and subsequent mechanical mixing. Gas-sensing properties of the synthesized nanocomposite were investigated. The results demonstrated that the nanocomposite sensor exhibited notable sensitivity toward ammonia (NH3) at a low operating temperature of 50 °C. Specifically, the sensor achieved a response of 2.3 at an NH3 concentration of 1000 ppm. At this temperature, the V2O5-SnO2-based sensor also displayed good selectivity and repeatability toward NH3, indicating its potential for reliable low-temperature gas sensing applications..