Ag-Modified Porous Perovskite-Type LaFeO<sub>3</sub> for Efficient Ethanol Detection
Perovskite (ABO<sub>3</sub>) nanosheets with a high carrier mobility have been regarded as the best candidates for gas-sensitive materials arising from their exceptional crystal structure and physical–chemical properties that often exhibit good gas reactivity and stability. Herein, Ag in...
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MDPI AG
2022-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/10/1768 |
| _version_ | 1797497240867045376 |
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| author | Jiejie Yu Cong Wang Quan Yuan Xin Yu Ding Wang Yang Chen |
| author_facet | Jiejie Yu Cong Wang Quan Yuan Xin Yu Ding Wang Yang Chen |
| author_sort | Jiejie Yu |
| collection | DOAJ |
| description | Perovskite (ABO<sub>3</sub>) nanosheets with a high carrier mobility have been regarded as the best candidates for gas-sensitive materials arising from their exceptional crystal structure and physical–chemical properties that often exhibit good gas reactivity and stability. Herein, Ag in situ modified porous LaFeO<sub>3</sub> nanosheets were synthesized by the simple and efficient graphene oxide (GO)-assisted co-precipitation method which was used for sensitive and selective ethanol detection. The Ag modification ratio was studied, and the best performance was obtained with 5% Ag modification. The Ag/LaFeO<sub>3</sub> nanomaterials with high surface areas achieved a sensing response value (R<sub>g</sub>/R<sub>a</sub>) of 20.9 to 20 ppm ethanol at 180 °C with relatively fast response/recovery times (26/27 s). In addition, they showed significantly high selectivity for ethanol but only a slight response to other interfering gases. The enhanced gas-sensing performance was attributed to the combination of well-designed porous nanomaterials with noble metal sensitization. The new approach is provided for this strategy for the potential application of more P-type ABO<sub>3</sub> perovskite-based gas-sensitive devices. |
| first_indexed | 2024-03-10T03:15:37Z |
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| id | doaj.art-b31eccfc12404575ae8b85688a2dff33 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T03:15:37Z |
| publishDate | 2022-05-01 |
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| series | Nanomaterials |
| spelling | doaj.art-b31eccfc12404575ae8b85688a2dff332023-11-23T12:27:58ZengMDPI AGNanomaterials2079-49912022-05-011210176810.3390/nano12101768Ag-Modified Porous Perovskite-Type LaFeO<sub>3</sub> for Efficient Ethanol DetectionJiejie Yu0Cong Wang1Quan Yuan2Xin Yu3Ding Wang4Yang Chen5School of Materials and Chemistry, University of Shanghai for Science & Technology, Shanghai 200093, ChinaSchool of Materials and Chemistry, University of Shanghai for Science & Technology, Shanghai 200093, ChinaSchool of Materials and Chemistry, University of Shanghai for Science & Technology, Shanghai 200093, ChinaSchool of Materials and Chemistry, University of Shanghai for Science & Technology, Shanghai 200093, ChinaSchool of Materials and Chemistry, University of Shanghai for Science & Technology, Shanghai 200093, ChinaNEST Lab, Department of Physics, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, ChinaPerovskite (ABO<sub>3</sub>) nanosheets with a high carrier mobility have been regarded as the best candidates for gas-sensitive materials arising from their exceptional crystal structure and physical–chemical properties that often exhibit good gas reactivity and stability. Herein, Ag in situ modified porous LaFeO<sub>3</sub> nanosheets were synthesized by the simple and efficient graphene oxide (GO)-assisted co-precipitation method which was used for sensitive and selective ethanol detection. The Ag modification ratio was studied, and the best performance was obtained with 5% Ag modification. The Ag/LaFeO<sub>3</sub> nanomaterials with high surface areas achieved a sensing response value (R<sub>g</sub>/R<sub>a</sub>) of 20.9 to 20 ppm ethanol at 180 °C with relatively fast response/recovery times (26/27 s). In addition, they showed significantly high selectivity for ethanol but only a slight response to other interfering gases. The enhanced gas-sensing performance was attributed to the combination of well-designed porous nanomaterials with noble metal sensitization. The new approach is provided for this strategy for the potential application of more P-type ABO<sub>3</sub> perovskite-based gas-sensitive devices.https://www.mdpi.com/2079-4991/12/10/1768perovskiteAg/LaFeO<sub>3</sub>ethanol sensinggas sensor |
| spellingShingle | Jiejie Yu Cong Wang Quan Yuan Xin Yu Ding Wang Yang Chen Ag-Modified Porous Perovskite-Type LaFeO<sub>3</sub> for Efficient Ethanol Detection Nanomaterials perovskite Ag/LaFeO<sub>3</sub> ethanol sensing gas sensor |
| title | Ag-Modified Porous Perovskite-Type LaFeO<sub>3</sub> for Efficient Ethanol Detection |
| title_full | Ag-Modified Porous Perovskite-Type LaFeO<sub>3</sub> for Efficient Ethanol Detection |
| title_fullStr | Ag-Modified Porous Perovskite-Type LaFeO<sub>3</sub> for Efficient Ethanol Detection |
| title_full_unstemmed | Ag-Modified Porous Perovskite-Type LaFeO<sub>3</sub> for Efficient Ethanol Detection |
| title_short | Ag-Modified Porous Perovskite-Type LaFeO<sub>3</sub> for Efficient Ethanol Detection |
| title_sort | ag modified porous perovskite type lafeo sub 3 sub for efficient ethanol detection |
| topic | perovskite Ag/LaFeO<sub>3</sub> ethanol sensing gas sensor |
| url | https://www.mdpi.com/2079-4991/12/10/1768 |
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