PRIMARY INTERMEDIATE IDENTIFIED DURING HETEROGENEOUS PHOTOLYSIS OF ACID ORANGE 7

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39922933" target="_blank" >RIV/00216275:25310/25:39922933 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jphotochem.2025.116591" target="_blank" >https://doi.org/10.1016/j.jphotochem.2025.116591</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jphotochem.2025.116591" target="_blank" >10.1016/j.jphotochem.2025.116591</a>

Jazyk výsledku

angličtina

Název v původním jazyce

PRIMARY INTERMEDIATE IDENTIFIED DURING HETEROGENEOUS PHOTOLYSIS OF ACID ORANGE 7

Popis výsledku v původním jazyce

Acid Orange 7 was photocatalytically degraded in a titanium dioxide slurry using oxygen bubbling and polychromatic radiation from a high-pressure Hg lamp in a back-flow tubular photoreactor. The dye was dissolved in buffers based on aqueous sodium carbonate (pH 10), sodium hydroxide (pH 10), or hydrochloric acid (pH 4). Reaction products were analyzed by NMR and MS spectroscopy as well as HPLC. A previously undescribed primary intermediate, 3-hydroxy-4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonic acid, was detected and isolated on a preparative scale from the photoreactor. The identity of the photolysis product was confirmed by comparison with a chemically synthesized standard. The kinetics of the heterogeneous photolysis of Acid Orange 7 was also investigated.

Název v anglickém jazyce

PRIMARY INTERMEDIATE IDENTIFIED DURING HETEROGENEOUS PHOTOLYSIS OF ACID ORANGE 7

Popis výsledku anglicky

Acid Orange 7 was photocatalytically degraded in a titanium dioxide slurry using oxygen bubbling and polychromatic radiation from a high-pressure Hg lamp in a back-flow tubular photoreactor. The dye was dissolved in buffers based on aqueous sodium carbonate (pH 10), sodium hydroxide (pH 10), or hydrochloric acid (pH 4). Reaction products were analyzed by NMR and MS spectroscopy as well as HPLC. A previously undescribed primary intermediate, 3-hydroxy-4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonic acid, was detected and isolated on a preparative scale from the photoreactor. The identity of the photolysis product was confirmed by comparison with a chemically synthesized standard. The kinetics of the heterogeneous photolysis of Acid Orange 7 was also investigated.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Photochemistry and Photobiology A-Chemistry

ISSN

1010-6030

e-ISSN

1873-2666

Svazek periodika

469

Číslo periodika v rámci svazku

December 2025

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

116591

Kód UT WoS článku

001529751900001

EID výsledku v databázi Scopus

2-s2.0-105009959338