Compact amperometric solid-electrolyte sensor for detection of NO2 in ppb range

Norio Miura, Masaki Ono, Kengo Shimanoe, Noboru Yamazoe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A solid-state amperometric sensor for NO2 was designed by attaching a Na+ conductor (NASICON) based device with an NaNO2 layer deposited on the counter electrode. With the sensing electrode being polarized at a constant potential relative to the reference Au electrode, electric current flowing through the device under exposure to NO2 was measured as the sensing signal. The current response was almost linear to the NO2 concentration in the range from 10 ppb to 1 ppm at 150°C. The 90% response time to even 20 ppb NO2 was ca. 60 s. The NO2 sensitivity was hardly affected by the coexistence of CO2, H2O and O2. A sensing mechanism is proposed from the sensing characteristics obtained.

Original languageEnglish
Title of host publicationInternational Conference on Solid-State Sensors and Actuators, Proceedings
PublisherIEEE
Pages951-954
Number of pages4
Volume2
Publication statusPublished - 1997
EventProceedings of the 1997 International Conference on Solid-State Sensors and Actuators. Part 2 (of 2) - Chicago, IL, USA
Duration: Jun 16 1997Jun 19 1997

Other

OtherProceedings of the 1997 International Conference on Solid-State Sensors and Actuators. Part 2 (of 2)
CityChicago, IL, USA
Period6/16/976/19/97

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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