METHOD FOR COMPARING CATALYST REACTIVITY AND EFFICIENCY BY MEASURING CHANGES IN THE ILLUMINATION INTENSITY OF H2 BUBBLES DURING WATER ELECTROLYSIS

1,2 HÖLZEL Jaroslav
Co-authors:
1,2 KLOUDA Karel 1 TILHON Jiří
Institutions:
1 Research Institute for Labour and Social Affairs, v. v. i., Jeruzalémská 1283/9, 110 00 Prague, Czech Republic, EU, jaroslav.holzel@rilsa.cz, karel.klouda@rilsa.cz, jiri.tilhon@rilsa.cz
2 VSB – Technical University of Ostrava, FBI, Lumírova 13, 700 30 Ostrava, Czech Republic, EU
Conference:
17th International Conference on Nanomaterials - Research & Application, OREA Congress Hotel, Brno, Czech Republic, EU, October 15 - 17, 2025
Proceedings:
Proceedings 17th International Conference on Nanomaterials - Research & Application
Pages:
202-207
ISBN:
978-80-88365-29-7
ISSN:
2694-930X
Published:
27th February 2026
Licence:
CC BY 4.0
Metrics:
2 views
Abstract

This study provides a description of a simplified, accelerated and economically advantageous method for determining the catalytic activity of carbon compounds based on graphene oxide (GO) and graphitic carbon nitride g-C3N4 during the electrolysis of water. The method proposed in this study for determining the catalytic activity of carbon compounds based on graphene oxide and graphitic carbon nitride is based on measuring the amount of H2 bubbles formed by the process of the dissociation of water on a cathode. A swarm of rising bubbles indicated the effectiveness of the catalysts. The principle of the proposed method for determining catalytic activity is based on measuring changes in the intensity of light illuminating the cathode. Such changes are influenced by the amount of bubbles formed. The experiments confirmed that the nanostructures employed enhanced reactivity and provided support for the photocatalytic reactions involved in the production of hydrogen.

Keywords: Light intensity, electrolysis, GO, g-C3N4, H2 bubbles

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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