Effect of Ambient Environment on Laser Reduction of Graphene Oxide for Applications in Electrochemical Sensing
Electrochemical sensors play an important role in a variety of applications. With the potential for enhanced performance, much of the focus has been on developing nanomaterials, in particular graphene, for such sensors. Recent work has looked towards laser scribing technology for the reduction of gr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/18/8002 |
| _version_ | 1797576929201618944 |
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| author | Abdullah A. Faqihi Neil Keegan Lidija Šiller John Hedley |
| author_facet | Abdullah A. Faqihi Neil Keegan Lidija Šiller John Hedley |
| author_sort | Abdullah A. Faqihi |
| collection | DOAJ |
| description | Electrochemical sensors play an important role in a variety of applications. With the potential for enhanced performance, much of the focus has been on developing nanomaterials, in particular graphene, for such sensors. Recent work has looked towards laser scribing technology for the reduction of graphene oxide as an easy and cost-effective option for sensor fabrication. This work looks to develop this approach by assessing the quality of sensors produced with the effect of different ambient atmospheres during the laser scribing process. The graphene oxide was reduced using a laser writing system in a range of atmospheres and sensors characterised with Raman spectroscopy, XPS and cyclic voltammetry. Although providing a slightly higher defect density, sensors fabricated under argon and nitrogen atmospheres exhibited the highest average electron transfer rates of approximately 2 × 10<sup>−3</sup> cms<sup>−1</sup>. Issues of sensor reproducibility using this approach are discussed. |
| first_indexed | 2024-03-10T22:01:46Z |
| format | Article |
| id | doaj.art-cccbeda8f8b14512a1704e975d828591 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T22:01:46Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-cccbeda8f8b14512a1704e975d8285912023-11-19T12:57:18ZengMDPI AGSensors1424-82202023-09-012318800210.3390/s23188002Effect of Ambient Environment on Laser Reduction of Graphene Oxide for Applications in Electrochemical SensingAbdullah A. Faqihi0Neil Keegan1Lidija Šiller2John Hedley3School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UKTranslational and Clinical Research Institute, Newcastle upon Tyne NE1 7RU, UKSchool of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UKSchool of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UKElectrochemical sensors play an important role in a variety of applications. With the potential for enhanced performance, much of the focus has been on developing nanomaterials, in particular graphene, for such sensors. Recent work has looked towards laser scribing technology for the reduction of graphene oxide as an easy and cost-effective option for sensor fabrication. This work looks to develop this approach by assessing the quality of sensors produced with the effect of different ambient atmospheres during the laser scribing process. The graphene oxide was reduced using a laser writing system in a range of atmospheres and sensors characterised with Raman spectroscopy, XPS and cyclic voltammetry. Although providing a slightly higher defect density, sensors fabricated under argon and nitrogen atmospheres exhibited the highest average electron transfer rates of approximately 2 × 10<sup>−3</sup> cms<sup>−1</sup>. Issues of sensor reproducibility using this approach are discussed.https://www.mdpi.com/1424-8220/23/18/8002reduced graphene oxideelectrochemical sensorssensor fabricationlaser reductioncyclic voltammetry |
| spellingShingle | Abdullah A. Faqihi Neil Keegan Lidija Šiller John Hedley Effect of Ambient Environment on Laser Reduction of Graphene Oxide for Applications in Electrochemical Sensing Sensors reduced graphene oxide electrochemical sensors sensor fabrication laser reduction cyclic voltammetry |
| title | Effect of Ambient Environment on Laser Reduction of Graphene Oxide for Applications in Electrochemical Sensing |
| title_full | Effect of Ambient Environment on Laser Reduction of Graphene Oxide for Applications in Electrochemical Sensing |
| title_fullStr | Effect of Ambient Environment on Laser Reduction of Graphene Oxide for Applications in Electrochemical Sensing |
| title_full_unstemmed | Effect of Ambient Environment on Laser Reduction of Graphene Oxide for Applications in Electrochemical Sensing |
| title_short | Effect of Ambient Environment on Laser Reduction of Graphene Oxide for Applications in Electrochemical Sensing |
| title_sort | effect of ambient environment on laser reduction of graphene oxide for applications in electrochemical sensing |
| topic | reduced graphene oxide electrochemical sensors sensor fabrication laser reduction cyclic voltammetry |
| url | https://www.mdpi.com/1424-8220/23/18/8002 |
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