A Practical Guide to Build a Raspberry Pi Pico Based Potentiostat for Educational Electrochemistry and Electronic Instrumentation

• Annemarijn Steijlen ^[1] ; Margreet Docter ^[1] ; Jeroen Bastemeijer ^[1] ; Maciej Topyła ^[1] ; Monika Moraczewska ^[1] ; Thijn Hoekstra ^[1] ; Marc Parrilla ^[2] ; Karolien De Wael ^[2]
  1. [1] Delft University of Technology

     Delft University of Technology

     Países Bajos

     
  2. [2] University of Antwerp

     University of Antwerp

     Arrondissement Antwerpen, Bélgica

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 101, Nº 9, 2024, págs. 3998-4004
• Idioma: inglés
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• Resumen

  • This manuscript presents the first practical guide to build a Raspberry Pi Pico based potentiostat for electrical and electrochemical instrumentation education. The circuit enables us to perform different types of voltammetry such as cyclic and square wave voltammetry. Voltammograms of paracetamol tablets in a neutral buffer solution were successfully recorded and compared to lab equipment. Thereafter, the effect of different scan rates and different concentrations was studied as a proof of concept. Furthermore, the experiments were expanded with measurements of other pharmaceutical tablets such as vitamin C. Over 80 nanobiology bachelor students successfully built their own potentiostat in an electronic instrumentation course. They validated their systems successfully with electrochemical experiments using paracetamol as a conventional pharmaceutical that can be performed in a classroom. The students acquired a valuable understanding of the electronic building blocks and system architecture within electrochemical instrumentation, equipping them with the requisite knowledge to effectively optimize instrumentation parameters in their future research work.