二氧化锡材料对异丙醇的敏感特性研究

On sensitive properties of tin-dioxide materials for isopropanol

基于纳米材料SnO_2的气敏元件对大多数的挥发性气体具有敏感性,以SnO_2为基料制备了旁热式异丙醇气敏元件.对比了纯SnO_2气体元件和掺杂ZnO气体元件对异丙醇的气敏特性,通过控制变量法,选择在相同的烧结温度或工作温度下进行测试.结果表明:在烧结温度为400℃,工作温度为300℃的条件下,掺杂为1%ZnO的SnO_2气敏元件对异丙醇气体的气敏特性较好.讨论了SnO_2材料对异丙醇的敏感机理.

Gas sensors based on nanomaterial SnO2 are sensitive to most volatile gases. The parathermal isopropanol gas sensor is made of SnO2 as the base material. The gas sensitivity of the pure SnO 2 gas element and the ZnO doped gas element to isopropanol is controlled by the control variable method, and the same sintering temperature or working temperature for the test is selected. The results show that the SnO2 gas sensor doped with 1%ZnO has better gas sensing properties for isopropanol gas at a sintering temperature of 400 ℃ and an operating temperature of 300 ℃. The sensitive mechanism of SnO 2 material to isopropanol is discussed.