Doped Zinc Oxide Sensors for Hexanal Detection

Hexanal is a volatile compound considered important for food storage and food quality control. Despite this, hexanal has not been extensively studied yet. In a previous work, sensors based on metal oxides semiconductors have been studied and zinc oxide showed promising sensing properties. In this work, the topic was further investigated by preparing zinc oxide-based resistive sensors, together with the aluminum-doped and indium-doped form, for hexanal monitoring in food applications.