High power illumination system for uniform, isotropic and real time controlled irradiance in photoactivated processes research

Sáenz Gamasa, Carlos; Hernández Salueña, Begoña; Sanz Carrillo, Diego; Pellejero, Ismael; Gandía Pascual, Luis

High power illumination system for uniform, isotropic and real time controlled irradiance in photoactivated processes research

dc.contributor.author	Sáenz Gamasa, Carlos
dc.contributor.author	Hernández Salueña, Begoña
dc.contributor.author	Sanz Carrillo, Diego
dc.contributor.author	Pellejero, Ismael
dc.contributor.author	Gandía Pascual, Luis
dc.contributor.department	Ciencias	es_ES
dc.contributor.department	Zientziak	eu
dc.contributor.department	Institute for Advanced Materials and Mathematics - INAMAT2	en
dc.date.accessioned	2024-09-30T07:45:15Z
dc.date.available	2024-09-30T07:45:15Z
dc.date.issued	2024
dc.date.updated	2024-09-30T07:24:43Z
dc.description.abstract	In the study of photocatalytic and photoactivated processes and devices a tight control on the illumination conditions is mandatory. The practical challenges in the determination of the necessary photonic quantities pose serious difficulties in the characterization of catalytic performance and reactor designs and configurations, compromising an effective comparison between different experiments. To overcome these limitations, we have designed and constructed a new illumination system based in the concept of the integrating sphere (IS). The system provides uniform and isotropic illumination on the sample, either in batch or continuous flow modes, being these characteristics independent of the sample geometry. It allows direct, non-contact and real time determination of the photonic quantities as well as versatile control on the irradiance values and its spectral characteristics. It can be also scaled up to admit samples of different sizes without affecting its operational behaviour. The performance of the IS system has been determined in comparison with a second illumination system, mounted on an optical bench, that provides quasi-parallel beam (QPB) nearly uniform illumination in tightly controlled conditions. System performance is studied using three sample geometries: a standard quartz cuvette, a thin straight tube and a microreactor by means of potassium ferrioxalate actinometry. Results indicate that the illumination geometry and the angular distribution of the incoming light greatly affect the absorption at the sample. The sample light absorption efficiency can be obtained with statistical uncertainties of about 3% and in very good agreement with theoretical estimations.	en
dc.description.sponsorship	Authors thank the financial support from the Spanish Agencia Estatal de Investigación and Spanish Ministerio de Ciencia e Innovación, MCIN/AEI/ 10.13039/501100011033/ and FEDER 'Una manera de hacer Europa', grants PID2019-106687RJ-I00 and PID2021-127265OB-C21, and Gobierno de Navarra, grant PC091-092 FOREST2+. L.M.G. thanks Banco de Santander and UPNA for their financial support under 'Programa de Intensificación de la Investigación 2018' initiative.
dc.format.mimetype	application/pdf	en
dc.identifier.citation	Sáenz, C., Hernández, B., Sanz-Carrillo, D., Pellejero, I., Gandía, L. M. (2024) High power illumination system for uniform, isotropic and real time controlled irradiance in photoactivated processes research. Heliyon, 10(10), 1-14. https://doi.org/10.1016/j.heliyon.2024.e31309.
dc.identifier.doi	10.1016/j.heliyon.2024.e31309
dc.identifier.issn	2405-8440
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/51861
dc.language.iso	eng
dc.publisher	Elsevier
dc.relation.ispartof	Heliyon, 10(10), 1-14.
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106687RJ-I00/ES/
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-127265OB-C21/ES/
dc.relation.publisherversion	https://doi.org/10.1016/j.heliyon.2024.e31309
dc.rights	© 2024 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject	Actinometry	en
dc.subject	Integrating sphere	en
dc.subject	Isotropic illumination	en
dc.subject	Photocatalysis	en
dc.subject	Uniform illumination	en
dc.title	High power illumination system for uniform, isotropic and real time controlled irradiance in photoactivated processes research	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion
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