Ecotoxicological assessment of MWCNT-reinforced MOC composites: impacts on model bacteria and eukaryotes with environmental relevance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43931778" target="_blank" >RIV/60461373:22310/25:43931778 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22320/25:43931778 RIV/60461373:22330/25:43931778

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlehtml/2025/en/d4en01088d" target="_blank" >https://pubs.rsc.org/en/content/articlehtml/2025/en/d4en01088d</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4en01088d" target="_blank" >10.1039/d4en01088d</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ecotoxicological assessment of MWCNT-reinforced MOC composites: impacts on model bacteria and eukaryotes with environmental relevance

Popis výsledku v původním jazyce

Composite materials based on magnesium oxychloride cement (MOC), reinforced with multi-walled carbon nanotubes (MWCNT) and their oxidized form (MWCNT-ox), are promising eco-friendly building materials. However, little is known about their ecotoxicological impact. This study pioneers the evaluation of MWCNT-reinforced MOC effect on selected prokaryotic (Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa) and eukaryotic (Artemia salina, Sinapis alba, Desmodesmus subspicatus) organisms. Initially, the effects of MWCNT and MWCNT-ox at concentrations of 1 g L−1, 0.1 g L−1, and 0.01 g L−1 on the growth and proliferation of organisms were assessed. While MWCNT samples did not affect bacterial growth or eukaryotic viability, they significantly inhibited bacterial biofilm formation. The antibiofilm effect varied among the tested bacteria, with S. aureus and E. coli being significantly more inhibited than P. aeruginosa. No differences were observed between the effects of MWCNT and MWCNT-ox on bacteria, while MWCNT-ox exhibited higher toxicity toward the tested eukaryotic organisms. Subsequently, MOC reference (MOC-REF) and MWCNT-reinforced MOC samples (MOC-MWCNT, MOC-MWCNT-ox) were prepared and characterized using XRD and SEM-EDS. Ecotoxicological assays confirmed that the composites inhibited both bacterial growth and biofilm formation, a highly desirable outcome, as microbial degradation compromises the longevity of building materials. The incorporation of MWCNT enhanced the antibacterial effect of MOC. Further, the addition of MWCNT and MWCNT-ox to MOC did not affect A. salina mortality, S. alba seed germination, or D. subspitatus growth. However, inhibition of S. alba root growth was observed at the highest tested concentration (1 g L−1) for all MOC samples, regardless of MWCNT presence. Overall, the results indicate a low environmental impact of the prepared MOC-MWCNT and MOC-MWCNT-ox composites. © 2025 The Royal Society of Chemistry.

Název v anglickém jazyce

Ecotoxicological assessment of MWCNT-reinforced MOC composites: impacts on model bacteria and eukaryotes with environmental relevance

Popis výsledku anglicky

Composite materials based on magnesium oxychloride cement (MOC), reinforced with multi-walled carbon nanotubes (MWCNT) and their oxidized form (MWCNT-ox), are promising eco-friendly building materials. However, little is known about their ecotoxicological impact. This study pioneers the evaluation of MWCNT-reinforced MOC effect on selected prokaryotic (Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa) and eukaryotic (Artemia salina, Sinapis alba, Desmodesmus subspicatus) organisms. Initially, the effects of MWCNT and MWCNT-ox at concentrations of 1 g L−1, 0.1 g L−1, and 0.01 g L−1 on the growth and proliferation of organisms were assessed. While MWCNT samples did not affect bacterial growth or eukaryotic viability, they significantly inhibited bacterial biofilm formation. The antibiofilm effect varied among the tested bacteria, with S. aureus and E. coli being significantly more inhibited than P. aeruginosa. No differences were observed between the effects of MWCNT and MWCNT-ox on bacteria, while MWCNT-ox exhibited higher toxicity toward the tested eukaryotic organisms. Subsequently, MOC reference (MOC-REF) and MWCNT-reinforced MOC samples (MOC-MWCNT, MOC-MWCNT-ox) were prepared and characterized using XRD and SEM-EDS. Ecotoxicological assays confirmed that the composites inhibited both bacterial growth and biofilm formation, a highly desirable outcome, as microbial degradation compromises the longevity of building materials. The incorporation of MWCNT enhanced the antibacterial effect of MOC. Further, the addition of MWCNT and MWCNT-ox to MOC did not affect A. salina mortality, S. alba seed germination, or D. subspitatus growth. However, inhibition of S. alba root growth was observed at the highest tested concentration (1 g L−1) for all MOC samples, regardless of MWCNT presence. Overall, the results indicate a low environmental impact of the prepared MOC-MWCNT and MOC-MWCNT-ox composites. © 2025 The Royal Society of Chemistry.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

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)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Environmental Science-Nano

ISSN

2051-8153

e-ISSN

2051-8161

Svazek periodika

12

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

3018-3034

Kód UT WoS článku

001497318500001

EID výsledku v databázi Scopus

2-s2.0-105006706879