Degradation of Mordant Blue 9 by BDD/TiO2 photoelectrode using 3D printed photoreactor

Miroslav Behul; Marián Marton; Pavol Michniak; Jaroslav Bruncko; Marian Vojs

doi:10.2478/jee-2026-0040

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Degradation of Mordant Blue 9 by BDD/TiO2 photoelectrode using 3D printed photoreactor

Journal of Electrical Engineering

Volume 77 (2026): Issue 4 (August 2026)

By: Miroslav Behul, Marián Marton, Pavol Michniak, Jaroslav Bruncko and Marian Vojs

Open Access

|Aug 2026

Abstract

This work investigates boron-doped diamond (BDD) / TiO₂ heterostructure photoelectrodes for the degradation of the organic dye Mordant Blue 9. The combination of BDD and TiO₂ enables enhanced photoelectrocatalytic activity under UV irradiation. The electrodes were characterized using scanning electron microscopy and Raman spectroscopy. Electrochemical behavior was studied using linear sweep voltammetry under UV illumination. The degradation efficiency was evaluated with and without applied bias voltage. Results demonstrate successful degradation of Mordant Blue 9 and a significant improvement in degradation rate when both UV irradiation and external potential are applied. The study confirms the suitability of BDD/TiO₂ structures for advanced water treatment applications.

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Articles in this issue

DOI: https://doi.org/10.2478/jee-2026-0040 | Journal eISSN: 1339-309X (formerly 1335-3632) | Journal ISSN: 1335-3632

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Language: English

Page range: 412 - 418

Submitted on: Jun 2, 2026

Published on: Aug 27, 2026

Published by: Slovak University of Technology in Bratislava

In partnership with: Paradigm Publishing Services

Keywords:

boron-doped diamond,

TiO₂,

photoelectrochemistry,

water treatment,

dye degradation

Related subjects:

Engineering,

Introductions and overviews,

Engineering, other

© 2026 Miroslav Behul, Marián Marton, Pavol Michniak, Jaroslav Bruncko, Marian Vojs, published by Slovak University of Technology in Bratislava
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 77 (2026): Issue 4 (August 2026)