ZHANG Zheng-yong1, ZHAO Xue-yu1. Study on sensitivity of sensitive material to CO2 based on doped SnO2-La2O3[J]. 2011, 30(10): 59-61. DOI: 10.13873/j.1000-97872011.10.031.
A sensitive material is prepared with metal oxide semiconductor SnO2 and 40 % active La2O3
exhibits the sensitivity to CO2.The mixture can measure the volume fraction of CO2(0
5
000)×10-6.The experimental results show that the sensitivity and the stability of the SnO2-La2O3 sensitive material have been enhanced by the addition of appropriate amount of metal oxides as CeO2
Ag2O and SiO2.The mixture with the addition has a higher sensibility to CO2.On the basis of the experimental result of this series of materials
the mechanism of sensitivity to CO2 is analyzed and discussed.The CO2 gas sensor based on these sensitive materials has many advan
tages such as simple structure
easy preparation
convenient operation
low price.It can be used for environmental monitoring of air and agricultural greenhouses.
关键词
Keywords
references
The influence of CO 2 on ISFETs with polymer membranes and characterization of a carbonate ion sensor [J] . Natalia Abramova,Sergey Levichev,Andrey Bratov. Talanta . 2010 (4)
Detection of CO 2 in solution with a Pt–NiO solid-state sensor [J] . Zhao Yue,Wencheng Niu,Wei Zhang,Guohua Liu,Wolfgang J. Parak. Journal of Colloid And Interface Science . 2010 (1)