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Naslov:Effects of Photodegradation in TLS Measurements: Troubleshooting and Applications in Photochemistry and Photocatalysis
Avtorji:ID Franko, Mladen, UNG (Avtor)
ID Franko, Mladen (Lastnik avtorskih pravic)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.10 - Objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje)
Organizacija:UNG - Univerza v Novi Gorici
Opis:Most analytical applications of thermal lens spectrometry (TLS) and related theoretical models consider absorbance of the sample constant during a single excitation by the pump laser beam. For photolabile analytes intensive excitation light can cause photodegradation, which significantly affects the results of TLS measurements. Theoretical models have been developed to account for changes in concentration and consequent changes in absorbance, caused by chemical reactions of different orders. Furthermore, abnormal TLS signal transients were observed for fast photochemical reactions on millisecond time scale, and the contributions of photodegradation as well as molecular diffusion were analyzed in detail. It has also been demonstrated that such effects can be reduced by performing TLS measurements in flowing systems such as in the case of flow injection analysis (FIA) or microfluidics. These findings were utilized to study the kinetics of chemical reactions, processes such as photostability of the soybean oil and thermal stability of biodiesel, or to improve the sensitivity of TLS detection in case of photolabile analytes. Furthermore, in combination with the concept of biomolecular recognition, FIA-TLS was exploited to study the efficiency of photocatalytic degradation of some neurotoxic substances such as organophosphate insecticides and revealed the formation of even more toxic degradation products. High sensitivity of TLS has enabled discrimination between photocatalytic and photosensitization mechanisms in photocatalytic degradation of textile dyes as well as between photodegradation and photocatalysis as will be demonstrated by the results of latest research in this field.
Ključne besede:Spektrometrija TLS, fotolabilnost, CrIVI), fotokataliza, fotorazgradnja
Status publikacije:Neobjavljeno
Leto izida:2023
PID:20.500.12556/RUNG-8600 Novo okno
COBISS.SI-ID:169546243 Novo okno
NUK URN:URN:SI:UNG:REP:KARAX5NI
Datum objave v RUNG:23.10.2023
Število ogledov:3213
Število prenosov:0
Metapodatki:XML DC-XML DC-RDF
:
FRANKO, Mladen, 2023, Effects of Photodegradation in TLS Measurements: Troubleshooting and Applications in Photochemistry and Photocatalysis. V : Workshop and International School Booklet of Abstracts [na spletu]. Objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje). Erice. 2023. [Dostopano 18 april 2025]. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=8600
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Gradivo je del monografije

Naslov:Workshop and International School Booklet of Abstracts
Uredniki:Roberto Li Voti
Kraj izida:Erice
Leto izida:2023

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