Ultra-sensitive TEA sensor based on bulk-like Zinc oxide nanostructures

In this study, a highly sensitive bulk-like nanostructure zinc oxide (ZnO) gas sensor is prepared using a two-step hydrothermal method. The physical phase, crystallinity, morphology and compound synthesis of the gas-touchy material are portrayed and the results show that it has a bulk-like design made out of wurtzite hexagonal zinc oxide chips. Gas detection focused on the bulk ZnO revealed extraordinary sensitivity (response value of 151 for 200 ppm triethylamine at 170 °C), response/recovery time were 31/53 s and detecting as low as 0.053 ppm for triethylamine. Indeed, even at room temperature, the sensor answers with a reaction of 3.2. The gas sensing mechanism of the sensor to triethylamine is additionally discussed.