摘要
将溶胶—凝胶—超临界流体干燥法所制超细ＳｎＯ２粉体应用于气敏材料，可以得到具有较大应用前景的低功耗气敏元件．本工作通过吸附性能和气敏效应的关联，特别是不同吸附物种对ＣＯ气体检测的作用研究，结合溢流现象，提出了超细元件的Ｐｄ－氧溢流模型。
With the application of ultrafine tin oxide prepared by the sol-gel-supercritical fluid drying technique(SCFDT)in gas sensitive material,a kind of prospect low-power gas sensor could be gotten. In this thesis,based on the correlation between the adsorption effect and gas sensing performance,especially the study on the effect of different adsorbed species,a model named Pd-O 2 spillover effect model was proposed,the basic reason for the low operating temperature performance of ultrafine sensor was well elucidated.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
1997年第2期109-113,共5页
Journal of Yunnan University(Natural Sciences Edition)
基金
国家自然科学基金
关键词
气敏材料
超细粉体
吸附物种
溢流
氧
二氧化锡
gas sensitive material
ultrafine particles
low-power
adsorption species
spillover
