WO3 nanorods / Ti3C2Tx nanocomposites sensor for detecting SO2 at room temperature

The detection of decomposed components is one of the important means of condition monitoring of SF6 gas insulation equipment, among which chemical sensing is a kind of method with great potential. In this paper, two-dimensional Ti3C2Tx was used as the sensing material substrate, and WO3-Ti3C2Tx with different WO3 doping concentrations were prepared by a one-step hydrothermal method. These materials were used to detect SO2, one of the decomposition products of SF6. The results show that WO3-Ti3C2Tx has a response of 12.5 % to 50 ppm SO2 at room temperature(20℃), and the response time and recovery time are 54 s and 47 s, respectively. At the same time, WO3-Ti3C2Tx has an excellent selectivity and long-term stability. Therefore, it is believed that WO3-Ti3C2Tx can be used as an excellent material for SO2 gas sensing devices.