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Antimony-Doped Tin Dioxide Gas Sensors Exhibiting High Stability in the Sensitivity to Humidity Changes
- Source :
- ACS Sensors. 1:913-920
- Publication Year :
- 2016
- Publisher :
- American Chemical Society (ACS), 2016.
-
Abstract
- The type and amounts of oxygen adsorption species at various atmospheric humidity levels are important factors in improving the sensitivity to combustible gases and stability to humidity changes of SnO2-based resistive-type gas sensors. We investigated the effect of antimony (Sb) doping of SnO2 nanoparticles on the stability of the sensitivity to humidity changes and oxygen adsorption species under humid atmosphere. No significant degradation of the sensitivity to hydrogen of Sb-SnO2 sensors was observed between 16 and 96 RH%, while an undoped SnO2 sensor showed gradually decreasing responses with increasing humidity. An evaluation of oxygen adsorption species under humid atmosphere showed a transition from O2– to O– with increasing humidity from 16 to 96 RH%. However, the O2– adsorption sites were maintained on the surfaces of the Sb-SnO2, even as the humidity increased. Moreover, the extent of oxygen adsorption on the Sb-SnO2 was not obviously changed with increasing humidity. These results indicate tha...
- Subjects :
- Fluid Flow and Transfer Processes
Controlled atmosphere
Hydrogen
Tin dioxide
Process Chemistry and Technology
Doping
Inorganic chemistry
chemistry.chemical_element
Humidity
Bioengineering
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Atmosphere
chemistry.chemical_compound
Adsorption
Antimony
chemistry
0210 nano-technology
Instrumentation
Subjects
Details
- ISSN :
- 23793694
- Volume :
- 1
- Database :
- OpenAIRE
- Journal :
- ACS Sensors
- Accession number :
- edsair.doi...........c3d4ba0eb0e4726021510ccc195bb97e