Novel CoMoO4/MoO3 heterostructures for highly selective and rapid detection of trace diisopropylamine at low temperature

The effective detection of diisopropylamine gas is one of great significance in industrial production and human health. In this study, the availably detect of diisopropylamine gas was achieved by constructing CoMoO4/MoO3 materials. The CoMoO4/MoO3 sensor has highly selective diisopropylamine (S=87.6 to 10 ppm diisopropylamine) at 170 °C, with a response time of only 5.3 s. The lowest detection limit of the sensor is 5 ppb, which is the lowest detection limit in diisopropylamine gas sensors to date. Meanwhile, the CoMoO4/MoO3 sensor also shows perfect diisopropylamine gas selectivity, moisture resistance, and long-term stability. Based on the advantages of p-n heterostructures and the synergistic effect of 2D nanosheets, CoMoO4/MoO3 materials exhibits excellent diisopropylamine gas sensing properties. This work provides useful guidance for constructing of high-performance diisopropylamine sensors in the future.