Photocatalytic degradation and transformation of pharmaceuticals using exfoliated metal-free g-C3N4

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F25%3AA2603C4O" target="_blank" >RIV/61988987:17310/25:A2603C4O - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/25:00142882 RIV/61989592:15310/25:73633638 RIV/61989100:27710/25:10258873

Výsledek na webu

<a href="https://linkinghub.elsevier.com/retrieve/pii/S2589004225021601" target="_blank" >https://linkinghub.elsevier.com/retrieve/pii/S2589004225021601</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.isci.2025.113899" target="_blank" >10.1016/j.isci.2025.113899</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photocatalytic degradation and transformation of pharmaceuticals using exfoliated metal-free g-C3N4

Popis výsledku v původním jazyce

Pharmaceuticals are micropollutants of global concern that contribute to environmental contamination alongside other anthropogenic and natural chemical compounds. This study addresses the photocatalytic degradation of model pharmaceutical compounds ofloxacin, diclofenac, and caffeine using bulk and thermally exfoliated graphitic carbon nitride (g-C3N4). Bulk g-C3N4 was synthesized from dicyandiamide at 550◦C and exfoliated at 500 ◦C for 1-3 h in an ambient atmosphere. The structural, textural, and electronic properties of the prepared materials were evaluated. Graphitic carbon nitride exfoliated for 2 h provided the best photocatalytic degradation efficiencies (>95%) for both ofloxacin and diclofenac and approximately 80% for caffeine, determined for 120 min under irradiation at 420 nm. The pharmaceuticals were degraded, and their intermediate degradation products were investigated using liquid chromatography combined with high-resolution tandem mass spectrometry. The successful identification of the main degradation products allowed us to propose transformation pathways for the studied pharmaceuticals.

Název v anglickém jazyce

Photocatalytic degradation and transformation of pharmaceuticals using exfoliated metal-free g-C3N4

Popis výsledku anglicky

Pharmaceuticals are micropollutants of global concern that contribute to environmental contamination alongside other anthropogenic and natural chemical compounds. This study addresses the photocatalytic degradation of model pharmaceutical compounds ofloxacin, diclofenac, and caffeine using bulk and thermally exfoliated graphitic carbon nitride (g-C3N4). Bulk g-C3N4 was synthesized from dicyandiamide at 550◦C and exfoliated at 500 ◦C for 1-3 h in an ambient atmosphere. The structural, textural, and electronic properties of the prepared materials were evaluated. Graphitic carbon nitride exfoliated for 2 h provided the best photocatalytic degradation efficiencies (>95%) for both ofloxacin and diclofenac and approximately 80% for caffeine, determined for 120 min under irradiation at 420 nm. The pharmaceuticals were degraded, and their intermediate degradation products were investigated using liquid chromatography combined with high-resolution tandem mass spectrometry. The successful identification of the main degradation products allowed us to propose transformation pathways for the studied pharmaceuticals.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

Projekt

<a href="/cs/project/EH23_021%2F0008588" target="_blank" >EH23_021/0008588: Inovativní technologie pro čistší Ostravsko</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

iScience

ISSN

2589-0042

e-ISSN

2589-0042

Svazek periodika

—

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

20

Strana od-do

—

Kód UT WoS článku

001628273800001

EID výsledku v databázi Scopus

2-s2.0-105022188092