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Potentiometric CO sensors using anion-conducting polymer electrolyte: Effects of the kinds of noble metal-loaded metal oxides as sensing-electrode materials on CO-sensing properties
http://hdl.handle.net/10069/38877
http://hdl.handle.net/10069/38877d31907c6-f3e4-4ee2-96f5-2070a649978c
名前 / ファイル | ライセンス | アクション |
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SABC287_42.pdf (914.0 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-12-18 | |||||
タイトル | ||||||
タイトル | Potentiometric CO sensors using anion-conducting polymer electrolyte: Effects of the kinds of noble metal-loaded metal oxides as sensing-electrode materials on CO-sensing properties | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Anion-conducting polymer | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Carbon monoxide | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Metal oxide | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Noble metal | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Potentiometric gas sensor | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Hyodo, Takeo
× Hyodo, Takeo× Takamori, Mari× Goto, Toshiyuki× Ueda, Taro× Shimizu, Yasuhiro |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Potentiometric CO-sensing properties of electrochemical gas sensors using an anion-conducting polymer as an electrolyte and a metal oxide (MO; Bi2O3, CeO2, In2O3, SnO2, or V2O5) loaded with or without 2.0?wt% noble metal (N; Ag, Au, Ir, Ru, Rh, Pd, or Pt) as an electrode material (EC(N/MO) or (EC(MO) sensor; N/MO: N-loaded MO) were investigated in wet synthetic air (57%RH) at 30?°C. Among all the EC(MO) sensors, the EC(CeO2) sensor showed the largest CO response and excellent CO selectivity against H2 and the EC(Bi2O3) sensor showed relatively large CO and H2 responses (no CO selectivity against H2). Other EC(MO) sensors hardly showed both CO and H2 responses. However, the Au loading just onto In2O3 and SnO2 was effective in improving the magnitude of CO and H2 responses of the EC(In2O3) and EC(SnO2) sensors, respectively, which resulted in relatively poor CO selectivity against H2. On the other hand, the Pt loading only onto SnO2 extremely enhanced only the magnitude of CO response of the EC(SnO2) sensor, and thus the EC(Pt/SnO2) sensor showed the most excellent CO selectivity against H2, among all the sensors in this study. The heat treatment of N/MO powders in H2 at 250?°C reduced only the H2 response of the EC(Au/SnO2) sensor, leading to an improvement of the CO selectivity of only the EC(Au/SnO2) sensor against H2. On the other hand, the heat treatment drastically enhanced both CO and H2 responses of the EC(Pt/SnO2) sensor, resulting in a decrease in its CO selectivity against H2. The CO and H2 responses of other EC(N/SnO2) sensors before and after the heat treatment in H2 at 250?°C were also examined, and the effectiveness of the noble metal loading and the heat treatment on the CO-sensing properties was discussed in this study. In addition, gas-sensing mechanism was also proposed on the basis of chemical surface states of representative N/MO. | |||||
書誌情報 |
Sensors and Actuators B: Chemical 巻 287, p. 42-52, 発行日 2019-05-15 |
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出版者 | ||||||
出版者 | Elsevier B.V. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 09254005 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.snb.2019.02.036 | |||||
権利 | ||||||
権利情報 | c2019, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Sensors and Actuators, B: Chemical, 287, pp.42-52; 2019 |