Ce掺杂的SnO2基纳米粒子对甲醛气体的高效响应  

Efficient response to formaldehyde gas of Ce-doped SnO2-based nanoparticles

作　　者：袁宝珍 马志红 韩荣蓉 宋吉明[1] YUAN Bao-zhen;MA Zhi-hong;HAN Rong-rong;SONG Ji-ming(School of Chemistry&Chemical Engineering,Anhui University,Hefei 230601,China)

机构地区：[1]安徽大学化学化工学院

出　　处：《化学研究与应用》2019年第7期1249-1254,共6页Chemical Research and Application

基　　金：国家自然科学基金项目(NO.21641007);安徽省高等学校自然科学重大项目(KJ2016SD63)

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SnO 2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。Cerium-doped tin dioxide(Ce-SnO 2)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-SnO 2 as sensing materials.The result shows that Ce-doped SnO 2 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.

关 键 词：Ce-SnO 2 八面体 甲醛 气体传感性质 

分 类 号：O614.43[理学—无机化学]