Potentiometric sensor based on NASICON and In2O3 for detection of CO2 at room temperature - Modification with foreign substances

Kenji Obata, Shizuko Kumazawa, Kengo Shimanoe, Norio Miura, Noboru Yamazoe

研究成果: ジャーナルへの寄稿記事

28 引用 (Scopus)

抄録

In an attempt to improve the CO2 sensing properties of NASICON (Na+ conductor)-based potentiometric device attached with In2O3 at room temperature, Na3PO4, NaHCO3 and Na2CO3 were introduced as single-components or combinations in the CO2 sensing layer of the device. Although, the original device suffered disturbance by humidity seriously, the disturbance could be reduced effectively, in some case almost completely, in the resulting modified devices, while the sensitivity to CO2 could be even promoted. The best device obtained, for which both of Na3PO4 and NaHCO3 were introduced, showed fairly excellent sensing characteristics, i.e. high sensitivity to CO2 and high resistance to disturbance by humidity at 30°C. The emf of the device was linear to the logarithm of CO2 concentration in the range 300-3000 ppm following well the Nernst equation for a 1.2 electron-reduction of CO2.

元の言語英語
ページ(範囲)639-643
ページ数5
ジャーナルSensors and Actuators, B: Chemical
76
発行部数1-3
DOI
出版物ステータス出版済み - 6 1 2001

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Potentiometric sensors
Atmospheric humidity
sensors
room temperature
disturbances
Temperature
Electrons
humidity
Electric potential
sensitivity
high resistance
logarithms
conductors

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

これを引用

Potentiometric sensor based on NASICON and In2O3 for detection of CO2 at room temperature - Modification with foreign substances. / Obata, Kenji; Kumazawa, Shizuko; Shimanoe, Kengo; Miura, Norio; Yamazoe, Noboru.

:: Sensors and Actuators, B: Chemical, 巻 76, 番号 1-3, 01.06.2001, p. 639-643.

研究成果: ジャーナルへの寄稿記事

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AU - Yamazoe, Noboru

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