Synthetic diamond thin film as functional electrode for electrochemical detection of contaminants and wastewater purification

0496862 - FZÚ 2019 CZ eng A - Abstract
Ižák, Tibor - Štenclová, Pavla - Szabó, Ondrej - Potocký, Štěpán - Vyskočil, V. - Kromka, Alexander
Synthetic diamond thin film as functional electrode for electrochemical detection of contaminants and wastewater purification.
NANOCON 2017 - Book of Abstracts. Ostrava: Tanger Ltd, 2017 - (Shrbená, J.). s. 117-117. ISBN 978-80-87294-78-9.
[NANOCON 2017. International Conference on Nanomaterials - Research & Application /9./. 18.10.2017-20.10.2017, Brno]
Institutional support: RVO:68378271
Keywords : boron doped diamond * electrochemistry * water purification * detection
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

Here we study electrochemical detection of stand-alone metal ions (Cd2+, Pb2+, Cu2+) and their mixtures using BDD electrodes which are compared with glassy carbon electrodes in sense of reproducibility and sensitivity. It was observed that standard cyclic voltammetry was not sensitive enough to detect 0.1 mM Cd2+ in 0.1 M HCl with carbon based electrodes, however by using differential pulse voltammetry we were able to detect the contaminants even at such low concentrations. We show that for a complex solution consisting of more contaminants (Cd2+, Pb2+ and Cu2+) the BDD electrodes are suitable to recognize each of the contaminants, however their detection limits are influenced by overlapping of their voltammetric peaks or by splitting of the original voltammetric peaks, which is assigned to underpotential deposition of metals on the BDD electrode. Moreover, influence of matrix solution (pure water, spiked tap water, real wastewater sample) to detection limits will be discussed too.

Permanent Link: http://hdl.handle.net/11104/0289484