An inexpensive paracetamol sensor based on an acid-activated carbon fiber microelectrode

Bolaños-Méndez, Diego; Alvarez-Paguay, Jocelyne; Fernández, Lenys; Saavedra-Alulema, Pablo F.; Veloz-Romero, Moris S.; Espinoza-Montero, Patricio J.

doi:10.1016/j.chemosphere.2023.140586

Cited by 6 publications

(1 citation statement)

References 57 publications

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“…Because of their miniature size, the surface diffusion process of microelectrodes is similar to that of spherical electrodes, so it shows unique electrochemical characteristics. Due to their high stability, high resolution, high mass transfer efficiency, and rapid response, microelectrode electrochemical detection has become the main means of detecting biomolecules and recording neural signals [18][19][20]. Metal-based microelectrodes have good catalytic performance, but they have the disadvantages of general flexibility, heavy weight, and easy oxidizability, and the mechanical mismatch between metal-based microelectrodes and surrounding tissues may cause an inflammatory response.…”

Section: Introductionmentioning

confidence: 99%

Detection of Dopamine Based on Aptamer-Modified Graphene Microelectrode

Zhang,

Chen,

Ying

et al. 2024

Sensors

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In this paper, a novel aptamer-modified nitrogen-doped graphene microelectrode (Apt-Au-N-RGOF) was fabricated and used to specifically identify and detect dopamine (DA). During the synthetic process, gold nanoparticles were loaded onto the active sites of nitrogen-doped graphene fibers. Then, aptamers were modified on the microelectrode depending on Au-S bonds to prepare Apt-Au-N-RGOF. The prepared microelectrode can specifically identify DA, avoiding interference with other molecules and improving its selectivity. Compared with the N-RGOF microelectrode, the Apt-Au-N-RGOF microelectrode exhibited higher sensitivity, a lower detection limit (0.5 μM), and a wider linear range (1~100 μM) and could be applied in electrochemical analysis fields.

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Section: Introductionmentioning

confidence: 99%