Enhanced detection of low concentration volatile organic compounds using advanced doped zinc oxide sensors
Majdi Benamara, Ahmadou Ly, Sonia Soltani, Manel Essid, Hassen Dahman, R. Dhahri, L. El Mir, Marc Debliquy, Driss Lahem
Abstract
-doped ZnO (G3ZO) sensors in the presence of volatile organic compounds (VOCs) gases such as ethanol, formaldehyde, methanol, and acetone at low concentrations. The sensors exhibited high responses to low ppm level concentrations of the VOCs gases. At a low operational temperature of 250 °C, the C3ZO sensor had the highest response to 5 ppm of ethanol, methanol, and formaldehyde gases compared to the pure and other doped sensors. Additionally, the A3ZO sensor exhibited the highest response to acetone gas. In conclusion, our findings suggest that the doping of zinc oxide can enhance the low concentration detection of VOCs gases, with the C3ZO and A3ZO sensors showing the highest response to specific gases.