• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Construction of highly sensitive sensing electrodes for biogas monitoring sensors

Research Project

Project/Area Number 19K05005
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26020:Inorganic materials and properties-related
Research InstitutionNagasaki University

Principal Investigator

Ueda Taro  長崎大学, 工学研究科, 助教 (10524928)

Co-Investigator(Kenkyū-buntansha) 清水 康博  長崎大学, 工学研究科, 教授 (20150518)
兵頭 健生  長崎大学, 工学研究科, 准教授 (70295096)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsガスセンサ / 固体電解質 / 混成電位 / 揮発性有機化合物 / VOCs / スピンコーティング / 安定化ジルコニア / 酸化セリウム / トルエン / インピーダンス / 3相界面 / メチルメルカプタン / YSZ / 生体ガス / CeO2
Outline of Research at the Start

呼気中に含まれる疾病由来成分(揮発性有機化合物(VOC類))を検知できる高感度ガスセンサを開発する。酸化セリウム(CeO2)を添加したAuを検知極として用いた固体電解質センサが,肺がんや歯周病の原因ガスである極低濃度のトルエンやメチルメルカプタンに比較的良好な応答を示すことを明らかにしている。そこで,Au系検知極へのイオン導電性の付与や検知極構造を最適化することによりさらに高感度化する。また,特性向上に寄与する因子を明らかにすることで応答メカニズムの解明と生体ガスを高感度に検出できる検知極設計指針を確立する。

Outline of Final Research Achievements

YSZ-based potentiometric gas sensors using a Au or CeO2-added Au sensing electrode (SE, CeO2 content: 8-24 wt%) were fabricated by a spin-coating method, and their sensing properties to toluene were examined in the temperature range of 450-550℃. The magnitude of response (ΔE) to 50 ppm toluene of the sensor attached with 8 wt% CeO2-added Au SE increased with a decrease in the SE thickness. On the other hand, ΔE of the sensors using 24 wt% CeO2-added Au SE increased with an increase in the SE thickness, and the sensor attached with the thickest 24 wt% CeO2-added Au SE showed the largest response at 450℃. This is probably due to an increased number of the interfaces between CeO2-added Au and gas, and the electrochemical oxidation of toluene at these sites.

Academic Significance and Societal Importance of the Research Achievements

揮発性有機化合物(VOCs)は建材や塗料,接着剤などに含まれており,人体に有害であることが知られている。また,生体ガス中にも微量のVOCsが含まれており,これらの濃度が健康状態によって変化することも報告されている。本研究では,スピンコート法により電子(Au)と酸素イオン(CeO2)を共に伝導可能な検知極を作製し,電極反応場である3相界面(Au/CeO2/ガス)を立体的に形成した場合に,研究開始前の予想とは異なり,検知極膜厚の増加に伴いトルエン応答値が向上する結果を得た。生体ガスに含まれる極低濃度(ppbレベル)のVOCsを高感度に検知可能とするための有益な知見が得られた。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020 2019 Other

All Journal Article (3 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 5 results) Remarks (1 results)

  • [Journal Article] Improved Toluene Response of Mixed-Potential Type YSZ-Based Gas Sensors Using CeO<sub>2</sub>-Added Au Electrodes2022

    • Author(s)
      Ueda Taro、Oide Nobumitsu、Kamada Kai、Hyodo Takeo、Shimizu Yasuhiro
    • Journal Title

      ECS Sensors Plus

      Volume: 1 Issue: 1 Pages: 013604-013604

    • DOI

      10.1149/2754-2726/ac63d2

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Toluene-sensing Properties of Mixed-potential Type Yttria-stabilized Zirconia-based Gas Sensors Attached with Thin CeO<sub>2</sub>-added Au Electrodes2020

    • Author(s)
      Nobumitsu Oide, Taro Ueda, Kai Kamada, Takeo Hyodo, Yasuhiro Shimizu
    • Journal Title

      Analytical Sciences

      Volume: 36 Issue: 3 Pages: 287-290

    • DOI

      10.2116/analsci.20C003

    • NAID

      130007807020

    • ISSN
      0910-6340, 1348-2246
    • Year and Date
      2020-03-10
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Au系電極を用いたYSZセンサのVOC検知特性:スピンコーティング法による薄膜検知極の作製と特性評価2020

    • Author(s)
      上田太郎,大井手延光,鎌田 海,兵頭健生,清水康博
    • Journal Title

      Chemical Sensors

      Volume: 36(A) Pages: 1-3

    • NAID

      40022228297

    • Related Report
      2019 Research-status Report
  • [Presentation] Toluene-sensing properties of mixed-potential type YSZ-based gas sensors attached with Au-based electrodes prepared by a spin-coating method2021

    • Author(s)
      Taro Ueda, Nobumitsu Oide, Kai Kamada, Takeo Hyodo, and Yasuhiro Shimizu
    • Organizer
      The 239th ECS Meeting and The 18th International Meeting on Chemical Sensors (IMCS)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Toluene-sensing properties of yttria-stabilized zirconia-based gas sensors attached with thin CeO2-added Au sensing electrodes2021

    • Author(s)
      Shinichi Kamura, Taro Ueda, Kai Kamada, Takeo Hyodo, and Yasuhiro Shimizu
    • Organizer
      aterials Challenges in Alternative & Renewable Energy 2021 (MCARE 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Au系電極を用いたYSZセンサによるトルエンの高感度検知2021

    • Author(s)
      嘉村槙一, 上田太郎,鎌田 海,兵頭健生,清水康博
    • Organizer
      第58回化学関連支部合同九州大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Au 系電極を用いた混成電位型ガスセンサによるトルエンの高感度検知2021

    • Author(s)
      嘉村 槙一,上田 太郎,鎌田 海,兵頭 健生,清水 康博
    • Organizer
      日本セラミックス協会 第34回秋季シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Toluene-sensing properties of solid-electrolyte gas sensors using CeO2-added Au thin-film as sensing electrodes2020

    • Author(s)
      Taro Ueda, Nobumitsu Oide, Kai Kamada, Takeo Hyodo, and Yasuhiro Shimizu
    • Organizer
      PRiME 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] VOC-sensing properties of solid-electrolyte gas sensors using CeO2-added Au thin film as sensing electrodes2020

    • Author(s)
      Nobumitsu Oide, Taro Ueda, Kai Kamada, Takeo Hyodo, Yasuhiro Shimizu
    • Organizer
      The 15th Joint Symposium of Nagasaki University and Jeju National University on Science and Technology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Au系電極を用いたYSZセンサのVOC検知特性:スピンコーティング法による薄膜検知極の作製と特性評価2020

    • Author(s)
      上田太郎,大井手延光,鎌田 海,兵頭健生,清水康博
    • Organizer
      電気化学会第87回大会
    • Related Report
      2019 Research-status Report
  • [Presentation] VOC-sensing properties of mixed-potential type YSZ-based gas sensors attached with Au-based electrodes prepared by a spin-coating method2019

    • Author(s)
      Nobumitsu Oide, Taro Ueda, Kai Kamada, Takeo Hyodo and Yasuhiro Shimizu
    • Organizer
      13th Asian Conference on Chemical Sensors (ACCS2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Remarks] 上田太郎助教が令和4年度(第25回)清山賞を受賞しました

    • URL

      https://www.nagasaki-u.ac.jp/ja/news/news3535.html

    • Related Report
      2021 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi