Abstract
We report the detection of volatile organic compound 1-cyclohexyl-2-pyrrolidone (CHP), in a bioelectrochemical system inoculated with Escherichia coli and supplemented with redox mediator 2-hydroxy-1,4-naphthoquinone (2-HNQ), using a functionalized carbon nanotube-coated screen-printed electrode (CNT-SPE) modified with –COOH and -NH2 functional groups. Addition of CHP decreased current output of the bioelectrochemical system, thus enabling rapid detection of CHP concentration. Under optimal conditions, the H2N-CNT-SPE was the best performing and a limit of detection (LOD) of 0.4 mg L−1 was achieved. The proposed sensor showed low interference from other inorganic and organic components. These results outline a viable strategy for detecting organic contaminants in environmental monitoring applications.
Original language | English |
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Pages (from-to) | 604-611 |
Number of pages | 8 |
Journal | Electrochimica Acta |
Volume | 317 |
DOIs | |
Publication status | Published - Sept 10 2019 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2019 Elsevier Ltd
ASJC Scopus Subject Areas
- General Chemical Engineering
- Electrochemistry
Keywords
- Bioelectrochemical systems
- Carbon nanotubes
- Escherichia coli
- Screen printed electrodes
- Volatile organic compounds