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Gas Sensing Properties and Mechanism of Nano-SnO2-Based Sensor for Hydrogen and Carbon Monoxide
Joint Authors
Chen, Weigen
Wan, Fu
Gao, Tuoyu
Zhou, Qu
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-04
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Nano-SnO2 powder was prepared by the hydrothermal method in this paper.
X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the composition of the crystalline phase and the morphology of the prepared gas-sensitive materials, respectively.
In particular, the study focused on the sensing behaviors of nano-SnO2-based sensor towards power transformer fault gases such as hydrogen and carbon monoxide.
The optimum working temperature for hydrogen and carbon monoxide is about 400∘C and 360∘C, separately.
Further investigations into the adsorption process of gas molecule on SnO2 (110) surface based on the first principles were conducted.
The calculations indicated that 1σ orbits of H2 split into several new electronic peaks and 5σ orbits of CO almost degenerated completely in the adsorption process, which promoted charge transfer between gas molecule and SnO2 (110) surface.
It provides a qualitative explanation for the prepared nano-SnO2-based sensor exhibiting different gas sensing properties towards H2 and CO.
American Psychological Association (APA)
Chen, Weigen& Zhou, Qu& Wan, Fu& Gao, Tuoyu. 2012. Gas Sensing Properties and Mechanism of Nano-SnO2-Based Sensor for Hydrogen and Carbon Monoxide. Journal of Nanomaterials،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-1029247
Modern Language Association (MLA)
Chen, Weigen…[et al.]. Gas Sensing Properties and Mechanism of Nano-SnO2-Based Sensor for Hydrogen and Carbon Monoxide. Journal of Nanomaterials No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-1029247
American Medical Association (AMA)
Chen, Weigen& Zhou, Qu& Wan, Fu& Gao, Tuoyu. Gas Sensing Properties and Mechanism of Nano-SnO2-Based Sensor for Hydrogen and Carbon Monoxide. Journal of Nanomaterials. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-1029247
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1029247