A Highly Sensitive Ammonia Gas Sensor Using Micrometer-Sized Core–Shell-Type Spherical Polyaniline Particles
A highly sensitive NH<sub>3</sub> gas sensor based on micrometer-sized polyaniline (PANI) spheres was successfully fabricated. The PANI microspheres were prepared via a facile in situ chemical oxidation polymerization in a polystyrene microsphere dispersion solution, resulting in a core–...
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| Format: | Article |
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MDPI AG
2021-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/22/7522 |
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| author | Masanobu Matsuguchi Tomoki Nakamae Ryoya Fujisada Shunsuke Shiba |
| author_facet | Masanobu Matsuguchi Tomoki Nakamae Ryoya Fujisada Shunsuke Shiba |
| author_sort | Masanobu Matsuguchi |
| collection | DOAJ |
| description | A highly sensitive NH<sub>3</sub> gas sensor based on micrometer-sized polyaniline (PANI) spheres was successfully fabricated. The PANI microspheres were prepared via a facile in situ chemical oxidation polymerization in a polystyrene microsphere dispersion solution, resulting in a core–shell structure. The sensor response increased as the diameter of the microspheres increased. The PSt@PANI(4.5) sensor, which had microspheres with a 4.5 μm average diameter, showed the largest response value of 77 for 100 ppm dry NH<sub>3</sub> gas at 30 °C, which was 20 times that of the PANI-deposited film-based sensor. Even considering measurement error, the calculated detection limit was 46 ppb. A possible reason for why high sensitivity was achieved is simply the use of micrometer-sized PANI spherical particles. This research succeeded in providing a new and simple technology for developing a high-sensitivity NH<sub>3</sub> gas sensor that operates at room temperature. |
| first_indexed | 2024-03-10T05:05:27Z |
| format | Article |
| id | doaj.art-ddad1332fa594363af41b82b271c2edf |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T05:05:27Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ddad1332fa594363af41b82b271c2edf2023-11-23T01:24:49ZengMDPI AGSensors1424-82202021-11-012122752210.3390/s21227522A Highly Sensitive Ammonia Gas Sensor Using Micrometer-Sized Core–Shell-Type Spherical Polyaniline ParticlesMasanobu Matsuguchi0Tomoki Nakamae1Ryoya Fujisada2Shunsuke Shiba3Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, Bunkyo-cho 3, Ehime, Matsuyama 790-8577, JapanDepartment of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, Bunkyo-cho 3, Ehime, Matsuyama 790-8577, JapanDepartment of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, Bunkyo-cho 3, Ehime, Matsuyama 790-8577, JapanDepartment of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, Bunkyo-cho 3, Ehime, Matsuyama 790-8577, JapanA highly sensitive NH<sub>3</sub> gas sensor based on micrometer-sized polyaniline (PANI) spheres was successfully fabricated. The PANI microspheres were prepared via a facile in situ chemical oxidation polymerization in a polystyrene microsphere dispersion solution, resulting in a core–shell structure. The sensor response increased as the diameter of the microspheres increased. The PSt@PANI(4.5) sensor, which had microspheres with a 4.5 μm average diameter, showed the largest response value of 77 for 100 ppm dry NH<sub>3</sub> gas at 30 °C, which was 20 times that of the PANI-deposited film-based sensor. Even considering measurement error, the calculated detection limit was 46 ppb. A possible reason for why high sensitivity was achieved is simply the use of micrometer-sized PANI spherical particles. This research succeeded in providing a new and simple technology for developing a high-sensitivity NH<sub>3</sub> gas sensor that operates at room temperature.https://www.mdpi.com/1424-8220/21/22/7522polyanilineNH<sub>3</sub> gas sensormicrospherescore–shell structure |
| spellingShingle | Masanobu Matsuguchi Tomoki Nakamae Ryoya Fujisada Shunsuke Shiba A Highly Sensitive Ammonia Gas Sensor Using Micrometer-Sized Core–Shell-Type Spherical Polyaniline Particles Sensors polyaniline NH<sub>3</sub> gas sensor microspheres core–shell structure |
| title | A Highly Sensitive Ammonia Gas Sensor Using Micrometer-Sized Core–Shell-Type Spherical Polyaniline Particles |
| title_full | A Highly Sensitive Ammonia Gas Sensor Using Micrometer-Sized Core–Shell-Type Spherical Polyaniline Particles |
| title_fullStr | A Highly Sensitive Ammonia Gas Sensor Using Micrometer-Sized Core–Shell-Type Spherical Polyaniline Particles |
| title_full_unstemmed | A Highly Sensitive Ammonia Gas Sensor Using Micrometer-Sized Core–Shell-Type Spherical Polyaniline Particles |
| title_short | A Highly Sensitive Ammonia Gas Sensor Using Micrometer-Sized Core–Shell-Type Spherical Polyaniline Particles |
| title_sort | highly sensitive ammonia gas sensor using micrometer sized core shell type spherical polyaniline particles |
| topic | polyaniline NH<sub>3</sub> gas sensor microspheres core–shell structure |
| url | https://www.mdpi.com/1424-8220/21/22/7522 |
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