JUAN, Hernandez-Rodriguez, Maria TRACHIOTI, Jan HRBÁČ, Daniel ROJAS, Alberto ESCARPA and Mamas PRODROMIDIS. Spark-Discharge-Activated 3D-Printed Electrochemical Sensors. Analytical Chemistry. American Chemical Society, 2024, vol. 96, No 25, p. 10127-10133. ISSN 0003-2700. Available from: https://dx.doi.org/10.1021/acs.analchem.4c01249.
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Basic information
Original name Spark-Discharge-Activated 3D-Printed Electrochemical Sensors
Authors JUAN, Hernandez-Rodriguez (724 Spain), Maria TRACHIOTI (300 Greece), Jan HRBÁČ (203 Czech Republic, belonging to the institution), Daniel ROJAS (724 Spain), Alberto ESCARPA (724 Spain) and Mamas PRODROMIDIS (300 Greece, guarantor).
Edition Analytical Chemistry, American Chemical Society, 2024, 0003-2700.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10405 Electrochemistry
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 7.400 in 2022
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1021/acs.analchem.4c01249
UT WoS 001247401100001
Keywords in English electrodes; fabrication; serotonin
Tags rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Marie Šípková, DiS., učo 437722. Changed: 12/7/2024 08:27.
Abstract
3D printing technology is a tremendously powerful technology to fabricate electrochemical sensing devices. However, current conductive filaments are not aimed at electrochemical applications and therefore require intense activation protocols to unleash a suitable electrochemical performance. Current activation methods based on (electro)chemical activation (using strong alkaline solutions and organic solvents and/or electrochemical treatments) or combined approaches are time-consuming and require hazardous chemicals and dedicated operator intervention. Here, pioneering spark-discharge-activated 3D-printed electrodes were developed and characterized, and it was demonstrated that their electrochemical performance was greatly improved by the effective removal of the thermoplastic support polylactic acid (PLA) as well as the formation of sponge-like and low-dimensional carbon nanostructures. This reagent-free approach consists of a direct, fast, and automatized spark discharge between the 3D-electrode and the respective graphite pencil electrode tip using a high-voltage power supply. Activated electrodes were challenged toward the simultaneous voltammetric determination of dopamine (DP) and serotonin (5-HT) in cell culture media. Spark discharge has been demonstrated as a promising approach for conductive filament activation as it is a fast, green (0.94 GREEnness Metric Approach), and automatized procedure that can be integrated into the 3D printing pipeline.
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