Herein, for the first time, we report on the presence of metal impurities in a widely reported and commercially available graphene/polylactic acid (PLA) 3D-printing filament and discuss the influence of these impurities on the electrochemical properties of as-printed and modified electrodes with said filament. Our findings show that the graphene component of this commercial filament contains Fe, Ti and Al impurities.
Bibliographical noteFunding Information:
M. P. acknowledges the financial support of the Grant Agency of the Czech Republic (EXPRO: 19-26896X). M. P. B. would like to acknowledge the European Structural and Investment Funds, OP RDE-funded project ‘‘ChemJets’’ (No. CZ.02.2.69/0.0/0.0/16_027/ 0008351). The authors would like to thank Dr Filip Novotn´y for help with the SEM. This research has been in part financially supported by the Ministry of Education, Youth and Sports of the Czech Republic under the project CEITEC 2020 (LQ1601).
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Surfaces, Coatings and Films
- Metals and Alloys
- Materials Chemistry