A versatile user-friendly electrochemical cell with three 3D-pen-printed electrodes in a tiny micropipette tip

Oliveira, Fabiano Mendonça de; Melo, Edmar Isaías de; Silva, Rodrigo Amorim Bezerra da

doi:10.1016/j.snb.2022.131650

Cited by 5 publications

(4 citation statements)

References 46 publications

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“…Ag/AgCl for 200 s and then a cathodic potential of −1.0 V vs . Ag/AgCl for 200 s, according to the procedure described elsewhere [45, 46]. Finally, 3DEPs were rinsed with deionized water and dried for at least 20 min before use.…”

Section: Methodsmentioning

confidence: 99%

“…This step was intended to cause efficient chemical etching of PLA wrapping around the conductive graphene and of PCL residues by hydrolysis, in order to expose, as much as possible, the conductive graphene present on printed electrode surfaces. The second step consisted of a single cycle of electrochemical activation in 0.5 M NaOH aqueous solution carried out by firstly applying an anodic potential of + 1.4 V vs. Ag/ AgCl for 200 s and then a cathodic potential of À 1.0 V vs. Ag/AgCl for 200 s, according to the procedure described elsewhere [45,46]. Finally, 3DEPs were rinsed with deionized water and dried for at least 20 min before use.…”

Section: Activation Of 3d Printed Electrodesmentioning

confidence: 99%

“…This result, together with the anodic-to-cathodic current ratio quite close to 1 (i pa /i pc = 0.95), pointed out the reversibility of the electrochemical process and the good electrochemical properties of the electrode. Despite the use of a simple method of pre-treatment, totally free from the use of solvents, mechanical polishing and heating, the peakto-peak separation value (ΔE p ) achieved is at the same level or even better than those reported using other procedures [33,42,45,46,52,53].…”

Section: Electrochemical Performance Of 3depsmentioning

confidence: 99%

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A novel strategy for fabrication, activation and cleaning of fully 3D printed flexible planar electrochemical platforms

2023

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In recent years, 3D printing of carbon‐based conductive filaments has received growing attention for assembling electrodes to be used in a wide variety of electroanalytical devices and applications. Despite the large amount of work present in literature concerning the development of three‐dimensional (3D) conductive structures, its potential as dry deposition method for assembling two‐dimensional (2D) electrodes to be used in planar configuration is still largely unexplored. In fact, the possibility to rapidly change the geometry of the electrochemical circuits, associated with the reduction of waste and the absence of solvents, which are instead important components of ink and paste formulations, makes this strategy a valid green and efficient alternative to other deposition approaches such as screen‐printing technology. We report here a rapid and solvent‐free method for assembling fully 3D printed flexible planar electroanalytical platforms (3DEPs) to be used with microliters of liquid. At the same time, a novel protocol for the surface pre‐treatment of 3D printed electrodes based on ultrasonication in aqueous NaOH solution followed by electrochemical activation using the same medium, is presented. In addition, the same procedure has proved to be efficient for cleaning the electrode surface after electrochemical passivation, thus confirming the validity of both time‐efficient and environmentally‐friendly assembling and activation/cleaning procedures developed which allow efficient and reusable electrodes to be produced. Finally, 3DEPs were tested by a proof‐of‐concept quantification of a commonly used food dye (Brilliant Blue, E‐133) in commercial solutions used for homemade food coloring.

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Section: Methodsmentioning

confidence: 99%

Section: Activation Of 3d Printed Electrodesmentioning

confidence: 99%

Section: Electrochemical Performance Of 3depsmentioning

confidence: 99%

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A novel strategy for fabrication, activation and cleaning of fully 3D printed flexible planar electrochemical platforms

2023

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“…Thus, the excess insulating polymer must be removed from the surface (enhancing the availability of conductive particles) to improve the electrochemical performance. For this, some surface post-treatment strategies (alone or combined) have been reported in the literature through mechanical polishing, 8,9 solvent immersion, 10–12 electrochemical treatments, 10,12–20 photochemical treatment, 19 carbonization, 21 and reagent-less laser treatment. 22…”

Section: Introductionmentioning

confidence: 99%

Exploring the coating of 3D-printed insulating substrates with conductive composites: a simple, cheap and versatile strategy to prepare customized high-performance electrochemical sensors

et al. 2022

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Customizing an all‐in‐one polydimethylsiloxane‐based electroanalytical platform using a 3D‐pen templated channel

Silva do Carmo,

Roveda,

Rodrigues

et al. 2024

Electroanalysis

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A versatile user-friendly electrochemical cell with three 3D-pen-printed electrodes in a tiny micropipette tip

Cited by 5 publications

References 46 publications

A novel strategy for fabrication, activation and cleaning of fully 3D printed flexible planar electrochemical platforms

A novel strategy for fabrication, activation and cleaning of fully 3D printed flexible planar electrochemical platforms

Exploring the coating of 3D-printed insulating substrates with conductive composites: a simple, cheap and versatile strategy to prepare customized high-performance electrochemical sensors

Customizing an all‐in‐one polydimethylsiloxane‐based electroanalytical platform using a 3D‐pen templated channel

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