Preparation of Co3O4 nanostructure morphology by anion-pairing hydrothermal and the effect of gas sensitivity

In this work, Co3O4 materials with different morphologies were synthesized based on cobalt sources containing different anions by hydrothermal method, and the effects of anions on their microscopic morphology and gas sensing properties were explored. The test results showed that the Co3O4 material synthesized with CoCl2 as the precursor had the best comprehensive gas sensing performance, with a high specific surface area of 93.47 m2/g, and a response value of 23.14 to 100 ppm ethanol at 200 degrees C. Exploring the effect of anions on the properties of Co3O4 materials has a certain guiding effect on the subsequent synthesis of gas-sensitive materials.