Unique Pd/PdO–In2O3 heterostructures for the highly efficient detection of triethylamine

Abstract

Triethylamine significantly harms the human body, so it is important to develop a triethylamine gas sensor with excellent performance for triethylamine detection. In this work, a Pd/PdO–In₂O₃ triethylamine gas sensor is developed by a simple, low-cost method, which exhibits improved comprehensive performance for triethylamine detection, including high sensitivity, fast response/recovery time, good selectivity, long-term stability, and certain moisture resistance. The unique method simultaneously realizes Pd loading and multiple PdO–In₂O₃ P–N heterojunctions, which accelerate the electron transport speed and increase electron transport channels, ultimately endowing Pd/PdO–In₂O₃ with excellent triethylamine sensing performance. This provides new methods and insights for preparing high-performance triethylamine sensors.