New Trend of Amperometric Gas Sensors Using Atomic Gold-Decorated Platinum/Polyaniline Composites
The Amperometric Gas Sensor (AGS) uses an electrode as the transducer element which converts its signal into a current from the electrochemical reaction of analytes taking place at the electrode surface. Many attempts to improve AGS performance, such as modifying the working electrode, applying a pa...
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MDPI AG
2024-02-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/12/2/27 |
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| author | Anifatul Faricha Parthojit Chakraborty Tso-Fu Mark Chang Masato Sone Takamichi Nakamoto |
| author_facet | Anifatul Faricha Parthojit Chakraborty Tso-Fu Mark Chang Masato Sone Takamichi Nakamoto |
| author_sort | Anifatul Faricha |
| collection | DOAJ |
| description | The Amperometric Gas Sensor (AGS) uses an electrode as the transducer element which converts its signal into a current from the electrochemical reaction of analytes taking place at the electrode surface. Many attempts to improve AGS performance, such as modifying the working electrode, applying a particular gas-permeable membrane, and selecting the proper electrolyte, etc., have been reported in the scientific literature. On the other hand, in the materials community, atomic gold has gained much attention because its physicochemical properties dramatically differ from those of gold nanoparticles. This paper provides an overview of the use of atomic gold in AGSs, both in a bulky AGS and a miniaturized AGS. In the miniaturized AGS, the system must be redesigned; for example, the aqueous electrolyte commonly used in a bulky AGS cannot be used due to volatility and fluidity issues. A Room Temperature Ionic Liquid (RTIL) can be used to replace the aqueous electrolyte since it has negligible vapor pressure; thus, a thin film of RTIL can be realized in a miniaturized AGS. In this paper, we also explain the possibility of using RTIL for a miniaturized AGS by incorporating a quartz crystal microbalance sensor. Several RTILs coated onto modified electrodes used for isomeric gas measurement are presented. Based on the results, the bulky and miniaturized AGS with atomic gold exhibited a higher sensor response than the AGS without atomic gold. |
| first_indexed | 2024-03-07T22:37:50Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-07T22:37:50Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-9acf5a9ce2ee4e5b87b343698dd44d322024-02-23T15:12:09ZengMDPI AGChemosensors2227-90402024-02-011222710.3390/chemosensors12020027New Trend of Amperometric Gas Sensors Using Atomic Gold-Decorated Platinum/Polyaniline CompositesAnifatul Faricha0Parthojit Chakraborty1Tso-Fu Mark Chang2Masato Sone3Takamichi Nakamoto4Department of Information and Communications Engineering, Tokyo Institute of Technology, Yokohama 226-8503, JapanInstitute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, JapanInstitute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, JapanInstitute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, JapanDepartment of Information and Communications Engineering, Tokyo Institute of Technology, Yokohama 226-8503, JapanThe Amperometric Gas Sensor (AGS) uses an electrode as the transducer element which converts its signal into a current from the electrochemical reaction of analytes taking place at the electrode surface. Many attempts to improve AGS performance, such as modifying the working electrode, applying a particular gas-permeable membrane, and selecting the proper electrolyte, etc., have been reported in the scientific literature. On the other hand, in the materials community, atomic gold has gained much attention because its physicochemical properties dramatically differ from those of gold nanoparticles. This paper provides an overview of the use of atomic gold in AGSs, both in a bulky AGS and a miniaturized AGS. In the miniaturized AGS, the system must be redesigned; for example, the aqueous electrolyte commonly used in a bulky AGS cannot be used due to volatility and fluidity issues. A Room Temperature Ionic Liquid (RTIL) can be used to replace the aqueous electrolyte since it has negligible vapor pressure; thus, a thin film of RTIL can be realized in a miniaturized AGS. In this paper, we also explain the possibility of using RTIL for a miniaturized AGS by incorporating a quartz crystal microbalance sensor. Several RTILs coated onto modified electrodes used for isomeric gas measurement are presented. Based on the results, the bulky and miniaturized AGS with atomic gold exhibited a higher sensor response than the AGS without atomic gold.https://www.mdpi.com/2227-9040/12/2/27bulky AGSelectrodeminiaturized AGSroom temperature ionic liquidisomers |
| spellingShingle | Anifatul Faricha Parthojit Chakraborty Tso-Fu Mark Chang Masato Sone Takamichi Nakamoto New Trend of Amperometric Gas Sensors Using Atomic Gold-Decorated Platinum/Polyaniline Composites Chemosensors bulky AGS electrode miniaturized AGS room temperature ionic liquid isomers |
| title | New Trend of Amperometric Gas Sensors Using Atomic Gold-Decorated Platinum/Polyaniline Composites |
| title_full | New Trend of Amperometric Gas Sensors Using Atomic Gold-Decorated Platinum/Polyaniline Composites |
| title_fullStr | New Trend of Amperometric Gas Sensors Using Atomic Gold-Decorated Platinum/Polyaniline Composites |
| title_full_unstemmed | New Trend of Amperometric Gas Sensors Using Atomic Gold-Decorated Platinum/Polyaniline Composites |
| title_short | New Trend of Amperometric Gas Sensors Using Atomic Gold-Decorated Platinum/Polyaniline Composites |
| title_sort | new trend of amperometric gas sensors using atomic gold decorated platinum polyaniline composites |
| topic | bulky AGS electrode miniaturized AGS room temperature ionic liquid isomers |
| url | https://www.mdpi.com/2227-9040/12/2/27 |
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