Flow-through working electrode based on free-standing porous boron-doped diamond

0559248 - FZÚ 2023 RIV GB eng J - Journal Article
Baroch, M. - Baluchová, Simona - Taylor, Andrew - Míka, L. - Fischer, J. - Dejmková, H. - Mortet, Vincent - Sedláková, Silvia - Klimša, Ladislav - Kopeček, Jaromír - Schwarzová-Pecková, K.
Flow-through working electrode based on free-standing porous boron-doped diamond.
Electrochimica acta. Roč. 426, Sep (2022), č. článku 140758. ISSN 0013-4686. E-ISSN 1873-3859
R&D Projects: GA ČR(CZ) GA20-03187S
Research Infrastructure: CzechNanoLab - 90110
Institutional support: RVO:68378271
Keywords : 3D-printing * amperometry * flow injection analysis * flow-through electrode * free-standing porous boron-doped diamond
OECD category: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Impact factor: 6.6, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.electacta.2022.140758

Free-standing porous boron-doped diamond (fs-pBDD) was successfully fabricated and employed as a flow-through working electrode in flow injection analysis (FIA) experiments for the first time. fs-pBDD was fabricated by microwave plasma enhanced chemical vapour deposition growth of BDD on a SiO2 nanofiber template spin coated onto a silicon substrate in a multistep process, before being released by wet chemical etching of the silicon substrate. By means of cyclic voltammetry, the effective surface area of the fs-pBDD electrode was estimated to be 30.1 mm2. Fundamental performance parameters of the fs-pBDD electrode in an FIA system were determined utilising [Ru(NH3)6]3+/2+ redox probe. A detection potential of −0.3 V and the flow rate of 1.0 mL min−1 were selected as optimal and were further employed for recording concentration dependence, which was linear from 5 µmol L−1 to 750 µmol L−1.
Permanent Link: https://hdl.handle.net/11104/0332586