Chemiresistive Polymer Percolation Network Gas Sensor Created with a Nanosphere Template
Abstract The sensitivity and limits of detection (LOD) of chemiresistive gas sensors can often be improved by increasing the surface area of the sensing material that interacts with the analyte. This process is referred to as nanostructuring. Nanostructured polypyrrole (PPy) chemiresistive sensors f...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2023-03-01
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| Series: | Advanced Materials Interfaces |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/admi.202202042 |
| _version_ | 1797772466678923264 |
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| author | Weishuo Li Merel J. Lefferts Yu Wang Abigail M. Lister Axel Forssberg Runze Chen Liren Wang Martin R. Castell |
| author_facet | Weishuo Li Merel J. Lefferts Yu Wang Abigail M. Lister Axel Forssberg Runze Chen Liren Wang Martin R. Castell |
| author_sort | Weishuo Li |
| collection | DOAJ |
| description | Abstract The sensitivity and limits of detection (LOD) of chemiresistive gas sensors can often be improved by increasing the surface area of the sensing material that interacts with the analyte. This process is referred to as nanostructuring. Nanostructured polypyrrole (PPy) chemiresistive sensors for ammonia detection were created with the aid of a nanosphere template. Polystyrene nanospheres are deposited to form a template between interdigitated electrodes, and chronoamperometry is then used to grow PPy between the electrodes within the gaps of the nanospheres. The PPy growth is controlled to create electrical percolation networks. After removal of the nanospheres by dissolving them, the percolation behavior and sensing response of the nanostructured PPy sensors are investigated. The nanostructured percolation sensors show higher sensitivity and lower LOD to ammonia than percolation networks prepared without nanosphere templates. An optimal nanostructured ammonia percolation sensor with a chemiresistive sensitivity of 2.59 ± 0.20% ppm−1 and a LOD of 71 ± 6 ppb is obtained. |
| first_indexed | 2024-03-12T21:52:21Z |
| format | Article |
| id | doaj.art-8d80793f7d0643af8891e6c0dd1b9e81 |
| institution | Directory Open Access Journal |
| issn | 2196-7350 |
| language | English |
| last_indexed | 2024-03-12T21:52:21Z |
| publishDate | 2023-03-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj.art-8d80793f7d0643af8891e6c0dd1b9e812023-07-26T01:36:15ZengWiley-VCHAdvanced Materials Interfaces2196-73502023-03-01108n/an/a10.1002/admi.202202042Chemiresistive Polymer Percolation Network Gas Sensor Created with a Nanosphere TemplateWeishuo Li0Merel J. Lefferts1Yu Wang2Abigail M. Lister3Axel Forssberg4Runze Chen5Liren Wang6Martin R. Castell7Department of Materials University of Oxford Parks Road Oxford OX1 3PH UKDepartment of Materials University of Oxford Parks Road Oxford OX1 3PH UKDepartment of Materials University of Oxford Parks Road Oxford OX1 3PH UKDepartment of Materials University of Oxford Parks Road Oxford OX1 3PH UKDepartment of Materials University of Oxford Parks Road Oxford OX1 3PH UKDepartment of Materials University of Oxford Parks Road Oxford OX1 3PH UKDepartment of Materials University of Oxford Parks Road Oxford OX1 3PH UKDepartment of Materials University of Oxford Parks Road Oxford OX1 3PH UKAbstract The sensitivity and limits of detection (LOD) of chemiresistive gas sensors can often be improved by increasing the surface area of the sensing material that interacts with the analyte. This process is referred to as nanostructuring. Nanostructured polypyrrole (PPy) chemiresistive sensors for ammonia detection were created with the aid of a nanosphere template. Polystyrene nanospheres are deposited to form a template between interdigitated electrodes, and chronoamperometry is then used to grow PPy between the electrodes within the gaps of the nanospheres. The PPy growth is controlled to create electrical percolation networks. After removal of the nanospheres by dissolving them, the percolation behavior and sensing response of the nanostructured PPy sensors are investigated. The nanostructured percolation sensors show higher sensitivity and lower LOD to ammonia than percolation networks prepared without nanosphere templates. An optimal nanostructured ammonia percolation sensor with a chemiresistive sensitivity of 2.59 ± 0.20% ppm−1 and a LOD of 71 ± 6 ppb is obtained.https://doi.org/10.1002/admi.202202042conducting polymerelectrochemical polymerisationgas sensornanostructuringpercolation network |
| spellingShingle | Weishuo Li Merel J. Lefferts Yu Wang Abigail M. Lister Axel Forssberg Runze Chen Liren Wang Martin R. Castell Chemiresistive Polymer Percolation Network Gas Sensor Created with a Nanosphere Template Advanced Materials Interfaces conducting polymer electrochemical polymerisation gas sensor nanostructuring percolation network |
| title | Chemiresistive Polymer Percolation Network Gas Sensor Created with a Nanosphere Template |
| title_full | Chemiresistive Polymer Percolation Network Gas Sensor Created with a Nanosphere Template |
| title_fullStr | Chemiresistive Polymer Percolation Network Gas Sensor Created with a Nanosphere Template |
| title_full_unstemmed | Chemiresistive Polymer Percolation Network Gas Sensor Created with a Nanosphere Template |
| title_short | Chemiresistive Polymer Percolation Network Gas Sensor Created with a Nanosphere Template |
| title_sort | chemiresistive polymer percolation network gas sensor created with a nanosphere template |
| topic | conducting polymer electrochemical polymerisation gas sensor nanostructuring percolation network |
| url | https://doi.org/10.1002/admi.202202042 |
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