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Detection of Crude Oil in Subsea Environments Using Organic Electrochemical Transistors.
Porter, Erin B; Adaryan, Sarah; Ardebili, Haleh; Biswal, Sibani Lisa; Verduzco, Rafael.
Afiliación
  • Porter EB; Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States.
  • Adaryan S; Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States.
  • Ardebili H; Department of Mechanical Engineering, University of Houston, Houston, Texas 77204, United States.
  • Biswal SL; Materials Science and Engineering Program, University of Houston, Houston, Texas 77204, United States.
  • Verduzco R; Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States.
ACS Sens ; 9(7): 3633-3640, 2024 Jul 26.
Article en En | MEDLINE | ID: mdl-38954649
ABSTRACT
Current methods for detecting pipeline oil leaks depend primarily on optical detection, which can be slow and have deployment limitations. An alternative non-optical approach for earlier and faster detection of oil leaks would enable a rapid response and reduce the environmental impact of oil leaks. Here, we demonstrate that organic electrochemical transistors (OECTs) can be used as non-optical sensors for crude oil detection in subsea environments. OECTs are thin film electronic devices that can be used for sensing in a variety of environments, but they have not yet been tested for crude oil detection in subsea environments. We fabricated OECTs with poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) as the channel and showed that coating the channel with a polystyrene film results in an OECT with a large and measurable response to oil. Oil that comes in contact with the device will adsorb onto the polystyrene film and increases the impedance at the electrolyte interface. We performed electrochemical impedance spectroscopy measurements to quantify the impedance across the device and found an optimal thickness for the polystyrene coating for the detection of oil. Under optimal device characteristics, as little as 10 µg of oil adsorbed on the channel surface produced a statistically significant change in the source-drain current. The OECTs were operable in seawater for the detection of oil, and we demonstrated that the devices can be transferred to flexible substrates which can be easily implemented in vehicles, pipelines, or other surfaces. This work demonstrates a low-cost device for oil detection in subsea environments and provides a new application of OECT sensors for sensing.
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Texto completo: 1 Base de datos: MEDLINE Asunto principal: Poliestirenos / Transistores Electrónicos / Petróleo / Técnicas Electroquímicas Idioma: En Revista: ACS Sens Año: 2024 Tipo del documento: Article

Texto completo: 1 Base de datos: MEDLINE Asunto principal: Poliestirenos / Transistores Electrónicos / Petróleo / Técnicas Electroquímicas Idioma: En Revista: ACS Sens Año: 2024 Tipo del documento: Article