Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI
Sensitive electrodes are of a great importance for the realization of highly performant electrochemical sensors for field application. In the present work, a laser-induced carbon (LIC) electrode is proposed for 4-Aminophenol (4-AP) electrochemical sensors. The electrode is patterned on a commercial...
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MDPI AG
2022-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/3/833 |
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| author | Salem Nasraoui Sami Ameur Ammar Al-Hamry Mounir Ben Ali Olfa Kanoun |
| author_facet | Salem Nasraoui Sami Ameur Ammar Al-Hamry Mounir Ben Ali Olfa Kanoun |
| author_sort | Salem Nasraoui |
| collection | DOAJ |
| description | Sensitive electrodes are of a great importance for the realization of highly performant electrochemical sensors for field application. In the present work, a laser-induced carbon (LIC) electrode is proposed for 4-Aminophenol (4-AP) electrochemical sensors. The electrode is patterned on a commercial low-cost polyimide (Kapton) sheet and functionalized with a multi-walled carbon nanotubes polyaniline (MWCNT-PANI) composite, realized by an in-situ-polymerization in an acidic medium. The LIC electrode modified with MWCNT-PAPNI nanocomposite was investigated by SEM, AFM, and electrochemically in the presence of ferri-ferrocyanide [Fe(CN)<sub>6</sub>]<sup>3−/4−</sup> by cyclic voltammetry and impedance spectroscopy. The results show a significant improvement of the electron transfer rate after the electrode functionalization in the presence of the redox mediators [Fe(CN)<sub>6</sub>]<sup>3−/4−</sup>, related directly to the active surface, which itself increased by about 18.13% compared with the bare LIG. The novel electrode shows a good reproducibility and a stability for 20 cycles and more. It has a significantly enhanced electro-catalytic activity towards electrooxidation reaction of 4-AP inferring positive synergistic effects between carbon nanotubes and polyaniline PANI. The presented electrode combination LIC/MWCNT-PANI exhibits a detection limit of 0.006 μM for the determination of 4-AP at concentrations ranging from 0.1 μM to 55 μM and was successfully applied for the monitoring in real samples with good recoveries. |
| first_indexed | 2024-03-09T23:09:43Z |
| format | Article |
| id | doaj.art-561eb3b4706746d8b08daea3013e19a9 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T23:09:43Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-561eb3b4706746d8b08daea3013e19a92023-11-23T17:46:07ZengMDPI AGSensors1424-82202022-01-0122383310.3390/s22030833Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANISalem Nasraoui0Sami Ameur1Ammar Al-Hamry2Mounir Ben Ali3Olfa Kanoun4Professorship of Measurement and Sensor Technology, Chemnitz University of Technology, 09111 Chemnitz, GermanyCentre for Research on Microelectronics and Nanotechnology of Sousse, Tunisia and NANOMISENE Lab, LR16CRMN01, University of Sousse Sahloul, Sousse 4003, TunisiaProfessorship of Measurement and Sensor Technology, Chemnitz University of Technology, 09111 Chemnitz, GermanyCentre for Research on Microelectronics and Nanotechnology of Sousse, Tunisia and NANOMISENE Lab, LR16CRMN01, University of Sousse Sahloul, Sousse 4003, TunisiaProfessorship of Measurement and Sensor Technology, Chemnitz University of Technology, 09111 Chemnitz, GermanySensitive electrodes are of a great importance for the realization of highly performant electrochemical sensors for field application. In the present work, a laser-induced carbon (LIC) electrode is proposed for 4-Aminophenol (4-AP) electrochemical sensors. The electrode is patterned on a commercial low-cost polyimide (Kapton) sheet and functionalized with a multi-walled carbon nanotubes polyaniline (MWCNT-PANI) composite, realized by an in-situ-polymerization in an acidic medium. The LIC electrode modified with MWCNT-PAPNI nanocomposite was investigated by SEM, AFM, and electrochemically in the presence of ferri-ferrocyanide [Fe(CN)<sub>6</sub>]<sup>3−/4−</sup> by cyclic voltammetry and impedance spectroscopy. The results show a significant improvement of the electron transfer rate after the electrode functionalization in the presence of the redox mediators [Fe(CN)<sub>6</sub>]<sup>3−/4−</sup>, related directly to the active surface, which itself increased by about 18.13% compared with the bare LIG. The novel electrode shows a good reproducibility and a stability for 20 cycles and more. It has a significantly enhanced electro-catalytic activity towards electrooxidation reaction of 4-AP inferring positive synergistic effects between carbon nanotubes and polyaniline PANI. The presented electrode combination LIC/MWCNT-PANI exhibits a detection limit of 0.006 μM for the determination of 4-AP at concentrations ranging from 0.1 μM to 55 μM and was successfully applied for the monitoring in real samples with good recoveries.https://www.mdpi.com/1424-8220/22/3/833laser induced carbonMWCNT-PANIelectrochemical sensor4-Aminophenol |
| spellingShingle | Salem Nasraoui Sami Ameur Ammar Al-Hamry Mounir Ben Ali Olfa Kanoun Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI Sensors laser induced carbon MWCNT-PANI electrochemical sensor 4-Aminophenol |
| title | Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI |
| title_full | Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI |
| title_fullStr | Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI |
| title_full_unstemmed | Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI |
| title_short | Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI |
| title_sort | development of an efficient voltammetric sensor for the monitoring of 4 aminophenol based on flexible laser induced graphene electrodes modified with mwcnt pani |
| topic | laser induced carbon MWCNT-PANI electrochemical sensor 4-Aminophenol |
| url | https://www.mdpi.com/1424-8220/22/3/833 |
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