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Vol. 34, No. 8(3), S&M3042

Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
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Sensors and Materials, Volume 28, Number 11 (2016)
Copyright(C) MYU K.K.
pp. 1211-1217
S&M1282 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2016.1415
Published: November 16, 2016

Evaluation of Oxygen Adsorption Based on the Electric Properties of SnO2 Semiconductor Gas Sensors [PDF]

Koichi Suematsu, Kiyomi Yamada, Masayoshi Yuasa, Tetsuya Kida, and Kengo Shimanoe

(Received June 6, 2016; Accepted August 3, 2016)

Keywords: SnO2, nanoparticles, oxygen adsorption, equilibrium constant

We successfully prepared SnO2 nanoparticles of two different sizes by hydrothermal synthesisand calcination at 400 ℃ to evaluate the oxygen adsorption equilibrium constant K(O2−ad) on a particle surface. The K(O2−ad) values were calculated from the relationship between the electric resistance and the oxygen partial pressure (PO2). The K(O2−ad) values of 7 and 17 nm SnO2 nanoparticles were almost in the same range when the donor densities of these nanoparticles are the same. Additionally, the sensor responses of these nanoparticles to hydrogen were affected by the surface-area-to-volume ratio because the K(O2− ad) values are the same. Thus, we propose that the K(O2−ad) value can be evaluated on the basis of the relationship between the electric resistance and PO2.

Corresponding author: Kengo Shimanoe


Cite this article
Koichi Suematsu, Kiyomi Yamada, Masayoshi Yuasa, Tetsuya Kida, and Kengo Shimanoe, Evaluation of Oxygen Adsorption Based on the Electric Properties of SnO2 Semiconductor Gas Sensors, Sens. Mater., Vol. 28, No. 11, 2016, p. 1211-1217.



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