Pr掺杂In₂O₃纳米颗粒的合成及其对气敏性能的研究

【作者】 马志红； 宋吉明；

【机构】 安徽大学化学化工学院；

【摘要】 高性能气体传感器包括高响应性、高选择性、短响应恢复时间和相对温和的工作温度;掺杂是提高气体传感器性能的有效手段之一。以乙醇为溶剂,采用一步溶剂热法合成了掺镨三氧化二铟纳米粒子,所制备的纳米粒子直径约为10 nm,比表面积为65.38 m²/g。有趣的是,3 mol%Pr-doped In₂O₃纳米颗粒作为传感器对乙醇具有高效的传感性能,在240℃下,响应值为106 （50 ppm）,响应时间为16.2 s,恢复时间为10 s,具有长期稳定性和高选择性。更多还原

【Abstract】 High sensing performance of a gas sensor includes high responsiveness, high selectivity, short recovery time and relatively mild operating temperature; doping is one of the efficient means to improve the performance of gas sensor. Herein, Pr-doped In₂O₃ nanoparticles were synthesized using ethanol as solvent by one step solvothermal route. The result indicated that the as-obtained Pr-doped In₂O₃ nanoparticles with a diameter ca. 10 nm and the specific surface area was 65.38 m²/g. Interestingly, 3 mol% Pr-doped In₂O₃ nanoparticles as sensors have efficient sensing performance for ethanol[1]with a response value（106 at 50 ppm）, a response time is 16.2 s, and a recovery time is 10 s at 240℃, which has long-term stability and high selectivity.更多还原