TY - JOUR
T1 - Mixed-potential type N2O sensor using stabilized zirconia- and SnO2-based sensing electrode
AU - Kanazawa, Eiichi
AU - Kugishima, Masahiro
AU - Shimanoe, Kengo
AU - Kanmura, Yuichi
AU - Teraoka, Yasutake
AU - Miura, Norio
AU - Yamazoe, Noboru
N1 - Funding Information:
This work was partially supported by Grant-in-Aid for Scientific Research from The Ministry of Education, Science, Sports and Culture of Japan. Eiichi Kanazawa received his BE degree and ME degree in materials science and engineering in 1996 and 1998, respectively, from Nagasaki University. Now, he is a doctoral course student of the Department of Materials Science and Engineering in Kyushu University. His current research interests are the development of chemical sensors based on metal oxide semiconductor. Masahiro Kugishima received his B. Eng. degree in applied chemistry in 2000 from Kyushu University. Now, he is a master’s course student of the Department of Materials Science and Engineering in Kyushu University. His current research interests are the development of chemical sensors using stabilized zirconia and oxide electrode. Kengo Shimanoe has been an Associate Professor at Kyushu University since 1999. He received BE degree in applied chemistry in 1983 and ME degree in 1985 from Kagoshima University and Kyushu University, respectively. He joined the advanced material and technology laboratory in Nippon Steel Corporation and has studied the electronic characterization on semiconductor surface and the electrochemical reaction on materials. He received PhD in engineering in 1993 from Kyushu University. His current research interests include the development of chemical sensors and ECD as well as the analysis of solid surface. Yuichi Kanmura has been Professor and Chairman, Department of Anesthesiology and Critical Care Medicine, Faculty of Medicine, Kagoshima University since 1999. He became a medical doctor in 1980 and received a PhD in Medical Science in 1986 from Kyushu University. His current research interests are the anesthetic contamination and its prevention in operating rooms. Yasutake Teraoka has been a Professor at Nagasaki University since 1999. He received BE degree in applied chemistry in 1981 and PhD in engineering in 1988 from Kyushu University. His current research interests are environmental catalysis and elucidation of structure-property-function relationship of inorganic materials. Norio Miura has been a Professor at Kyushu University since 1999. He received BE degree in applied chemistry in 1973, ME degree in 1975 from Hiroshima University and PhD in engineering in 1980 from Kyushu University. His current research concentrates on development of high-performance chemical sensors (solid-state sensors for environmental gases, SPR immuno-sensors) as well as other electrochemical functional devices such as selective oxygen separator, metal-air battery and electrochemical capacitor. Noboru Yamazoe has been a Professor at Kyushu University since 1981. He received BE degree in applied chemistry in 1963 and PhD in engineering in 1969 from Kyushu University. His current research interests are the development and application of functional inorganic materials.
PY - 2001/4/30
Y1 - 2001/4/30
N2 - A stabilized zirconia-based electrochemical device attached with an oxide electrode was developed for monitoring nitrous oxide (N2O) in air at elevated temperatures. Among the 11 kinds of monoxides tested for a tubular zirconia device, SnO2 was found to exhibit the best sensing electrode properties, giving a relatively high sensitivity to N2O in air at 475°C. The electromotive force (emf) value of the device was almost linear to the logarithm of N2O concentration in the range of 50-200 ppm. The addition of a foreign oxide (e.g. Bi2O3 and Sm2O3) to SnO2 was effective to improve the N2O sensitivity. Especially the element using Sm2O3 (0.5 wt.%)-SnO2 sensing electrode exhibited the N2O sensitivity about 1.5 times as high as that using the pure SnO2 electrode, allowing to detect about 35 ppm N2O in air. On the basis of the measurements of anodic and cathodic polarization curves, the sensing mechanism was confirmed to involve a mixed potential at the sensing electrode.
AB - A stabilized zirconia-based electrochemical device attached with an oxide electrode was developed for monitoring nitrous oxide (N2O) in air at elevated temperatures. Among the 11 kinds of monoxides tested for a tubular zirconia device, SnO2 was found to exhibit the best sensing electrode properties, giving a relatively high sensitivity to N2O in air at 475°C. The electromotive force (emf) value of the device was almost linear to the logarithm of N2O concentration in the range of 50-200 ppm. The addition of a foreign oxide (e.g. Bi2O3 and Sm2O3) to SnO2 was effective to improve the N2O sensitivity. Especially the element using Sm2O3 (0.5 wt.%)-SnO2 sensing electrode exhibited the N2O sensitivity about 1.5 times as high as that using the pure SnO2 electrode, allowing to detect about 35 ppm N2O in air. On the basis of the measurements of anodic and cathodic polarization curves, the sensing mechanism was confirmed to involve a mixed potential at the sensing electrode.
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U2 - 10.1016/S0925-4005(01)00546-9
DO - 10.1016/S0925-4005(01)00546-9
M3 - Article
AN - SCOPUS:0035971750
VL - 75
SP - 121
EP - 124
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
IS - 1-2
ER -