A New Insight into Cross-Sensitivity to Humidity of SnO2 Sensor
- Univ. of Science and Technology Beijing, Beijing (China)
- Argonne National Lab. (ANL), Argonne, IL (United States)
Here, the efficiency of gas sensors varies enormously from fundamental study to practical application. This big gap comes mainly from the complex and unpredictable effect of atmospheric environment, especially in humidity. Here, the cross-sensitivity to humidity of a SnO2 sensor from local structural and lattice evolutions is studied. The sensing response of ethanol is found to be efficiently activated by adsorbing trace of water but inhibited as humidity increases. By X-ray diffraction, pair distribution function of synchrotron and ab initio calculations, the independent effect of water and ethanol on lattice and local structure are clearly revealed, which elucidate the intricate sensing reactions. The formation of hydrogen bonds and repulsion of ethoxides play key roles in the structural distortions, and also in adsorption energies that are critical to the sensitive behavior. The results show the sensor performance coupled with local structural evolution, which provides a new insight into the controversial effects of humidity on SnO2 sensors.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- Fundamental Research Funds for the Central Universities; National Natural Science Foundation of China (NSFC); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1471538
- Alternate ID(s):
- OSTI ID: 1418415
- Journal Information:
- Small, Journal Name: Small Journal Issue: 13 Vol. 14; ISSN 1613-6810
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ordered porous RGO/SnO2 thin films for ultrasensitive humidity detection
Mitigating humidity interference in chemiresistive hydrogen sensors through hydrophobic surface functionalization
Journal Article
·
Mon Jun 12 20:00:00 EDT 2023
· Journal of Materials Chemistry C
·
OSTI ID:2422849
Mitigating humidity interference in chemiresistive hydrogen sensors through hydrophobic surface functionalization
Journal Article
·
Mon Jul 14 20:00:00 EDT 2025
· Sensors and Actuators. B, Chemical
·
OSTI ID:3012399