Fast plasma nanomodification of graphitic carbon nitride by amide and carboxyl groups for enhanced sulfamethoxazole degradation in wastewater: detailed experimental and DFT study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00141091" target="_blank" >RIV/00216224:14310/25:00141091 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1039/D4TA08613A" target="_blank" >https://doi.org/10.1039/D4TA08613A</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4ta08613a" target="_blank" >10.1039/d4ta08613a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fast plasma nanomodification of graphitic carbon nitride by amide and carboxyl groups for enhanced sulfamethoxazole degradation in wastewater: detailed experimental and DFT study

Popis výsledku v původním jazyce

In this study, we developed an efficient plasma nanomodification strategy of graphitic carbon nitride (gCN) prepared from melamine (M-gCN) and 3-amino-1,2,4-triazole (3AT-gCN). For the first time, we report the surface functionalization of gCN by amide (CONH2) groups formed simultaneously with carboxyl (COOH) groups and amine (NH2) groups. The plasma treatment was performed using a large-area surface low-temperature plasma generated in the open air, proving to be a non-destructive, rapid (4 minutes), and environmentally friendly approach for enhancing the photocatalytic efficacy of gCN. To comprehensively examine the effect of nanomodification, we conducted deep X-ray Photoelectron Spectroscopy (XPS) analysis complemented by Density Functional Theory (DFT) simulations. The surface functionalization has profound impact on the electronic properties of plasma-treated samples (M-gCN-PT and 3AT-gCN-PT) as demonstrated by valence band XPS spectra. The plasma nanomodification led to pronounced separation and migration of photogenerated charge carriers. These findings have been supported by the efficient degradation of sulfamethoxazole (SMX), both with and without the presence of peroxymonosulfate (PMS), showcasing significant SMX removal of 88% (M-gCN-PT) and 76% (3AT-gCN-PT) after 2 h in pure water or 83% (M-gCN-PT) and 71% (3AT-gCN-PT) after 12 h in effluents from a municipal wastewater treatment plant (WWTP) in Bratislava.

Název v anglickém jazyce

Fast plasma nanomodification of graphitic carbon nitride by amide and carboxyl groups for enhanced sulfamethoxazole degradation in wastewater: detailed experimental and DFT study

Popis výsledku anglicky

In this study, we developed an efficient plasma nanomodification strategy of graphitic carbon nitride (gCN) prepared from melamine (M-gCN) and 3-amino-1,2,4-triazole (3AT-gCN). For the first time, we report the surface functionalization of gCN by amide (CONH2) groups formed simultaneously with carboxyl (COOH) groups and amine (NH2) groups. The plasma treatment was performed using a large-area surface low-temperature plasma generated in the open air, proving to be a non-destructive, rapid (4 minutes), and environmentally friendly approach for enhancing the photocatalytic efficacy of gCN. To comprehensively examine the effect of nanomodification, we conducted deep X-ray Photoelectron Spectroscopy (XPS) analysis complemented by Density Functional Theory (DFT) simulations. The surface functionalization has profound impact on the electronic properties of plasma-treated samples (M-gCN-PT and 3AT-gCN-PT) as demonstrated by valence band XPS spectra. The plasma nanomodification led to pronounced separation and migration of photogenerated charge carriers. These findings have been supported by the efficient degradation of sulfamethoxazole (SMX), both with and without the presence of peroxymonosulfate (PMS), showcasing significant SMX removal of 88% (M-gCN-PT) and 76% (3AT-gCN-PT) after 2 h in pure water or 83% (M-gCN-PT) and 71% (3AT-gCN-PT) after 12 h in effluents from a municipal wastewater treatment plant (WWTP) in Bratislava.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Chemistry A

ISSN

2050-7488

e-ISSN

2050-7496

Svazek periodika

13

Číslo periodika v rámci svazku

19

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

13909-13923

Kód UT WoS článku

001457757100001

EID výsledku v databázi Scopus

2-s2.0-105002351170