【摘要】 采用简单水热法合成了铈掺杂的二氧化锡（Ce-SnO₂）纳米材料,并研究了其对甲醛、乙醇、丙酮等气体的传感特性。通过X射线衍射仪、X射线光电子能谱和透射电子显微镜观察合成出的晶体成分、结构和形貌。通过在SnO₂中掺杂少量的铈能改善其对气体的响应。气敏传感测量结果表明,掺杂Ce的SnO₂纳米材料在100℃的操作温度下显示出对甲醛气体的高响应。响应和恢复时间非常短,空气湿度对传感器的性能几乎没有影响。此外,研究了传感器对于其他还原气体的选择性。更多还原

【Abstract】 Cerium-doped tin dioxide（Ce-SnO₂）nanomaterials have synthesized by simple hydrothermal method.The composition,structure and morphology of the obtained nanomaterials were characterized by XRD,XPS and TEM.Gas sensing properties of formaldehyde,ethanol,acetone,et al.have explored via using Ce-SnO₂ as sensing materials.The result shows that Ce-doped SnO₂ nanomaterials have high response&selectivity to formaldehyde gas at operating temperatures of 100 ℃,and response&recovery time of the sensor is very short.Air humidity has little effect on sensing performance.更多还原