摘要
Ｘ－射线光电子光谱（ＸＰＳ）分析表明，在２５～３００℃时，ＺｎＳｎＯ３的表面存在及Ｏ￣－两种吸附氧，且随工作温度的增加，逐渐转变成Ｏ￣－或Ｏ￣（２－）。ＺｎＳｎＯ＿３周表面电阻控制型气敏材料，氧的吸附活化能为０．５２ｅＶ。ＺｎｓｎＯ＿３基元件对各种还原性气体都有一定气敏效应，它对乙醇比汽油的分辨率高５倍以上。
The adsorption of oxygen on ZnSnO_3 has been studied by X-ray photoelectronspectroscopy.At temperatures ranging from 25 ℃ to 300 ℃ the charge states of thechemisorbed oxygen were found to be and O￣-, and the former may convert into O￣-(orO￣(2-))with increasing temperature. ZnSnO_3 is a typical surface-controlled sensor.The activa-tion energy of oxygen adsorbed on ZnSnO3 was 0. 52eV. The ZnSnO_3-based sensor showedthe greatest sensitivity to C_2H_5OH gas than to other reducing gases:petrol, C_2H_2,LPG,andH_2.
出处
《应用化学》
CAS
CSCD
北大核心
1994年第2期31-34,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金资助项目
