Ethanol gas sensing performance of Zn2SnO4 nanopowder prepared via a hydrothermal route with different solution pH values

Pictured above is the transient response of the sensor to different ethanol concentrations measured at 300 °C. Among the three sensors, the one based on the Zn2SnO4 nanopowder prepared with the solution pH value of 13 exhibits the best integral ethanol sensing performances.