Wydział Chemii

3D printing is now a common tool for preparing custom parts as it enables creation of objects of well defined and reproducible geometry. It can be used to make functional, low-cost electrodes for electrochemistry. In the case presented here the FDM 3D printing technique was used to create microelectrodes. Microelectrodes exhibit size-specific properties and are qualitatively different from macroelectrodes. Their specific advantages are their applicability in poorly conducting solutions, in sample surface scanning, and simplified quantification of chemical species.

While there are cases of use of conductive filaments as the core of a microelectrode, this is the first demonstration of microelectrodes being created entirely using the FDM 3D printing approach. These microelectrodes were imaged and characterized electrochemically to show that they exhibit behavior typical of microelectrodes. The dataset contains 3D model, gcode script, photos and SEM images of the microelectrodes. It also contains spreadsheets with cyclic voltammetry data for a set of PLA and PET-G based all-3D-printed microelectrodes. The microelectrodes electrochemical properties were characterized using 0.1mM 1,1'-Ferrocenedimethanol redox probe in 0.1 KCl and compared against platinum microelectrode of similar size. The microelectrodes are then also modified with pH-sensitive syringaldazine and utilized to measure pH of a set of universal buffers of pH between 3 and 9.