光催化和Fe2O3修饰对CdSnO3基传感器性能的影响
Effect of Photocatalysis and Fe2O3 Doping on the Performance of CdSnO3-based Sensor
梅馨跃 1蒙欣然 1孟凡利 1任梦洋 1曹楚 1张仁泽1
作者信息
- 1. 东北大学 信息科学与工程学院,沈阳 110819
- 折叠
摘要
用于有害气体丙酮检测的传统传感器具有一定程度不足,以锡酸镉(CdSnO3)为基底的传感器对现有传感器缺点均有不同程度的弥补.采用水热法合成纯CdSnO3 纳米颗粒和Fe2O3 纳米颗粒,通过研磨法制备Fe2O3 修饰的CdSnO3 材料,由此制备传感器并进行气敏测试.实验结果表明:纯 CdSnO3 基传感器在最适温度(340℃)下对 100 ppm 丙酮响应值为19.71,响应时间为98 s,恢复时间为51 s;掺杂3%Fe2O3 的CdSnO3 基传感器最适温度降低至320℃,且响应值显著提高,最高响应值是纯CdSnO3 基传感器的1.564 倍,同时响应时间降低至49 s,恢复时间降低至 30 s;在 365 nm 紫外光照射条件下,最适温度也降低至 320℃,对100 ppm丙酮的响应值为 23.5,是纯CdSnO3 基传感器的 1.36 倍.3%Fe2O3 掺杂的CdSnO3传感器用于丙酮检测具有较好的性能优势.
Abstract
In the detection of harmful gas acetone,the traditional sensors have defects in some form or other,but the sensors based on CdSnO3 can make up for the existing shortcomings in different degrees.Pure CdSnO3 nanoparticles and Fe2O3 nanoparticles were synthesized by hydrothermal method to prepare the sensor,and the gas sensitivity test was carried out.Through experimental tes-ting and data analysis,it is found that the response value of pure CdSnO3-based sensor to 100 ppm acetone is 19.71,the response time is 98 s,and the recovery time is 51 s at the optimal temperature(340℃).The optimum temperature of the CdSnO3-based sensor doped with 3%Fe2O3 is reduced to 320℃,and the response value is significantly improved,showing that the highest response value is 1.564 times that of pure CdSnO3,and the response time is reduced to 49 s and the recovery time is reduced to 30 s.Under the irradiation condition of 365 nm ultraviolet light,the optimal tempera-ture is also reduced by 320℃,and the response value to 100 ppm acetone is 23.5,which is 1.36 times that of pure CdSnO3-based sensor.In conclusion,the research of 3%Fe2O3 doped CdSnO3 sensor is better performance advantage for acetone detection.
关键词
传感器/锡酸镉/丙酮检测/光催化/Fe2O3修饰Key words
sensor/CdSnO3/acetone detection/photocatalysis/Fe2O3 doping引用本文复制引用
基金项目
国家自然科学基金项目(62071112)
国家自然科学基金项目(62033002)
国家级大学生创新创业训练计划项目(S202310145142)
出版年
2024
NETL
NSTL
万方数据