Počet záznamů: 1
Graphitic carbon nitride thin films for light-induced photocatalysis in a slit geometry microreactor
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SYSNO ASEP 0562924 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Graphitic carbon nitride thin films for light-induced photocatalysis in a slit geometry microreactor Tvůrce(i) Dolai, Susmita (UCHP-M) SAI
Vanluchene, Anna (UCHP-M) RID, ORCID, SAI
Stavárek, Petr (UCHP-M) RID, ORCID, SAI
Dzik, P. (CZ)
Fajgar, Radek (UCHP-M) RID, ORCID, SAI
Soukup, Karel (UCHP-M) RID, SAI, ORCID
Klusoň, Petr (UCHP-M) RID, ORCID, SAIČíslo článku 108790 Zdroj.dok. Journal of Environmental Chemical Engineering. - : Elsevier - ISSN 2213-2929
Roč. 10, č. 6 (2022)Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova photochemistry ; photo-microreactor ; carbon nitride Obor OECD Chemical process engineering CEP SS02030008 GA TA ČR - Technologická agentura ČR Způsob publikování Open access s časovým embargem (01.01.2025) Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000882052600005 EID SCOPUS 85141173488 DOI 10.1016/j.jece.2022.108790 Anotace A combination of a photocatalysis and a micro-flow technology provides a highly capable tool for the design and utilisation of functional thin films. Here, they are represented by graphitic carbon nitride films, potentially used for photo-oxidations in environmental chemistry or for hydrogen evolution by water splitting. The optimised synthesis involves a study of the role of monomers, solvents, calcination temperatures, particle size, etc., in respect of the achieved photocatalytic activity. Films were prepared from the mixture of milled powder catalysts and a binder, dried, and subjected to post-processing treatments (post annealing, plasma application). The intended functionality was assessed in two types of reactions, photo-oxidation of a fluorescent dye, Rhodamine B,
and photo-oxidation of a common antibiotic, Tetracycline. The performance was compared for the bulk catalyst, and for the thin film. In either case, the same part of light spectrum, concentrations, and other conditions were applied. However, for the thin films, a special experimental setup was utilised. It had the appearance of a micro flow apparatus designed as a slit geometry photo-microreactor. Comparison of the two different reaction systems revealed the advantages of the thin film catalyst, which was immobilised directly on the photo-microreactor wall. The specific rate constant was more than 50 times higher in this arrangement for both model reactants. In addition, thin films of g-C3N4 were stable and well adherent during the microreactor tests with the repetitive
reaction cycles. Plasma treatment considerably increased the hydrophilicity of the dried thin films, which resulted in their substantially higher photoactivity.Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2023 Elektronická adresa https://hdl.handle.net/11104/0335083
Počet záznamů: 1