ZnO/Ti₃C₂T_xMXene nanocomposites prepared by magnetic filtration cathode vacuum arc deposition for triethylamine sensors

In the past, the monitoring system of toxic and harmful gases such as triethylamine (TEA) in the industrial environment was not perfect enough, and with the development of human society, the requirements for environmental friendliness and sustainable development are constantly improving, so the development of a simple, effective and ideal performance of a new TEA gas sensor has become an urgent problem to be solved. In this study, ZnO/Ti₃C₂T_x gas sensor was prepared by magnetic filtration cathode vacuum arc (FCVA) deposition method for TEA detection. Gas-sensing measurements demonstrated that the response of the present gas sensor is 44.3 for 100 ppm TEA gas at 160°C, and the detection limit is as low as 5 ppm. Moreover, it showed remarkable selectivity and long-term stability. The excellent gas sensing performance can be attributed to the abundant electron transport channels of ZnO/Ti₃C₂T_x and the formation of heterojunctions. This work provides a new way to prepare gas sensors at low temperatures, which is of great significance for solving the problem of air pollution.