Application of high power UV LEDs in heterogeneous photocatalysis

Náfrádi Máté and Hlogyik Tamás and Farkas Luca and Alapi Tünde: Application of high power UV LEDs in heterogeneous photocatalysis.

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Abstract

In our work, we designed and built a photochemical reactor with High Power LED light sources, and then tested its operation by heterogeneous photocatalytic decomposition of coumarin. The UV-LEDs emitting at a wavelength of 367(±10) nm were built into a frame with air-cooling elements. A well-controlled electrical power source was used to control and regulate the light output of the LEDs. The photon flux was measured at different electric power inputs, and was found to be linearly dependent on electrical power. Coumarin was used to test the new photoreactor during heterogeneous photocatalysis using TiO2 and ZnO as photocatalysts. At low photon flux the UV-LEDs outperformed a fluorescent mercury-vapor lamp in terms of efficiency and power consumption, but their usage at high electric input is not favorable.

Item Type: Conference or Workshop Item
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2020
Volume: 26
ISBN: 978-963-306-771-0
Page Range: pp. 67-71
Language: English
Event Title: International Symposium on Analytical and Environmental Problems (26.) (2020) (Szeged)
Related URLs: http://acta.bibl.u-szeged.hu/73792/
Uncontrolled Keywords: Fotokatalízis
Additional Information: Bibliogr.: 71. p. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.04. Chemical sciences
Date Deposited: 2021. Nov. 16. 14:51
Last Modified: 2022. Aug. 08. 15:39
URI: http://acta.bibl.u-szeged.hu/id/eprint/73954

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