摘要
采用CTAB模板法制备了具有介孔结构的SnO2。通过小角X射线衍射,BET法对其进行了表征。采用静态配气法对介孔SnO2的气敏性能进行了研究。结果表明:随着煅烧温度的升高,介孔SnO2的比表面积从105.54m2/g降到38.11m2/g。通过延长陈化时间和进一步水热处理可以增加介孔SnO2材料的比表面积。气敏测试表明:在4.5V加热电压下,气敏元件对体积分数为50×10-6酒精蒸气有较好的气敏性能,灵敏度为9.4,响应-恢复时间均为8s。
Mesostructured SnO2 was successfully prepared by cetyltrimethyl ammonium bromide （CTAB） template method. It was characterizeded by small angle X-ray diffraction （SXRD） and BET method. Its gas sensing properties were measured by a stationary state gas distribution method. The results show that the specific surface area of mesostructured SnO2 is decreased from 105.54 m^2/g to 38.11 m^2/g with increase of the calcination temperature; but increased by prolonging the ageing time or further hydrothermal treatment. The gas sensitivity results show that the gas sensor has satisfactory response to 50x10^-6 ethanol （volume fraction） at the heating voltage of 4.5 V： sensitivity is 9.4, and response-recovery time is all 8 s.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2008年第3期12-14,18,共4页
Electronic Components And Materials
基金
上海市教委科研基金资助项目(No.2007ZZ12)
关键词
电子技术
气敏元件
介孔Sn02
模板法
气敏材料
electron technology
gas sensor
mesostructured Sn02
template method
gas-sensing material
