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3D-printed Ag/AgCl pseudo-reference electrodes

Rohaizad, Nasuha ; Mayorga-Martinez, Carmen C. ; Novotný, Filip ; Webster, Richard D. ; Pumera, Martin

Electrochemistry communications, 2019-06, Vol.103, p.104-108 [Periódico revisado por pares]

Elsevier B.V

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  • Título:
    3D-printed Ag/AgCl pseudo-reference electrodes
  • Autor: Rohaizad, Nasuha ; Mayorga-Martinez, Carmen C. ; Novotný, Filip ; Webster, Richard D. ; Pumera, Martin
  • Assuntos: 3D print ; Additive manufacturing ; Electrodeposition ; Fused deposition modeling ; Graphene/polylactic acid ; Reference electrode
  • É parte de: Electrochemistry communications, 2019-06, Vol.103, p.104-108
  • Descrição: Three-dimensional (3D) printing offers the advantages of customisation, reproducibility and rapid production. In parallel, there is a demand for electrochemical components designed for miniaturisation or customisation of devices. Herein we report a straightforward, fast and simple method to prepare an Ag/AgCl pseudo-reference electrode primarily based on 3D printing using a graphene/polylactic acid filament. The fabrication process involves electrodeposition of silver followed by bleaching to form AgCl on the surface of the electrode. Scanning electron microscopy and energy dispersive X-ray spectroscopy confirm the fabrication process. Open circuit potential measurements against commercial Ag/AgCl reference electrodes reveal a difference of 14 ± 0.3 mV. Nonetheless, the values are stable and reproducible, fulfilling the necessary requirements of a reference electrode. The performance of the 3D-printed pseudo-reference electrode was tested via cyclic voltammetry in two redox systems, [Fe(CN)6]3−/4− and [Ru(NH3)6]2+/3+. Fabrication of stable 3D-printed reference electrodes represents a key step in the production of fully 3D-printable electrochemical systems. [Display omitted] •A modified 3D-printed electrode is used as a pseudo-reference electrode.•Its potential is stable and reproducible.•The 3D-printed Ag/AgCl electrode exhibits a small potential difference compared with a classical Ag/AgCl reference electrode.
  • Editor: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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