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Title: A New Insight into Cross-Sensitivity to Humidity of SnO 2 Sensor

Abstract

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 SnO 2 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 SnO 2 sensors.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Science and Technology Beijing, Beijing (China)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; National Natural Science Foundation of China (NNSFC); Fundamental Research Funds for the Central Universities
OSTI Identifier:
1471538
Alternate Identifier(s):
OSTI ID: 1418415
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Small
Additional Journal Information:
Journal Volume: 14; Journal Issue: 13; Journal ID: ISSN 1613-6810
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; ethanol sensors; humidity effect; local structures; nanosized SnO2; thermal expansion

Citation Formats

Zhu, He, Li, Qiang, Ren, Yang, Gao, Qilong, Chen, Jun, Wang, Na, Deng, Jinxia, and Xing, Xianran. A New Insight into Cross-Sensitivity to Humidity of SnO2 Sensor. United States: N. p., 2018. Web. doi:10.1002/smll.201703974.
Zhu, He, Li, Qiang, Ren, Yang, Gao, Qilong, Chen, Jun, Wang, Na, Deng, Jinxia, & Xing, Xianran. A New Insight into Cross-Sensitivity to Humidity of SnO2 Sensor. United States. doi:10.1002/smll.201703974.
Zhu, He, Li, Qiang, Ren, Yang, Gao, Qilong, Chen, Jun, Wang, Na, Deng, Jinxia, and Xing, Xianran. Mon . "A New Insight into Cross-Sensitivity to Humidity of SnO2 Sensor". United States. doi:10.1002/smll.201703974.
@article{osti_1471538,
title = {A New Insight into Cross-Sensitivity to Humidity of SnO2 Sensor},
author = {Zhu, He and Li, Qiang and Ren, Yang and Gao, Qilong and Chen, Jun and Wang, Na and Deng, Jinxia and Xing, Xianran},
abstractNote = {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.},
doi = {10.1002/smll.201703974},
journal = {Small},
number = 13,
volume = 14,
place = {United States},
year = {Mon Jan 29 00:00:00 EST 2018},
month = {Mon Jan 29 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on January 29, 2019
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Works referenced in this record:

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