Efficient adsorption of endocrine-disrupting pesticides from water with a reusable magnetic covalent organic framework

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10421674" target="_blank" >RIV/00216208:11320/20:10421674 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=kjWJPDEW2X" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=kjWJPDEW2X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.micromeso.2020.110523" target="_blank" >10.1016/j.micromeso.2020.110523</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Efficient adsorption of endocrine-disrupting pesticides from water with a reusable magnetic covalent organic framework

Popis výsledku v původním jazyce

A magnetic covalent organic framework (COF) is applied for the first time as adsorbent for the extraction of endocrine-disrupting pesticides from water. High adsorption efficiencies were found for lipophilic chlorpyrifos and atrazine, with calculated maximum adsorption capacities of 270 mg g(-1) and 54 mg g(-1), respectively, outperforming reported adsorbents, such as activated carbon, graphene, or metal-organic frameworks. Polar diquat showed very poor adsorption efficiency, indicating that hydrophobic interactions play a role in the adsorption. Calculations revealed that the interactions between the COF and the pesticides are mainly based on van der Waals interactions. Finally, recycling experiments showed that both pesticides can be recovered with an efficiency of over 90% using acetonitrile as solvent, with merely minor losses in adsorption capacity after five consecutive cycles of adsorption/desorption. The present study promotes further exploration of the possible application of COFs for the extraction and pre-concentration of pesticides in environmental matrices.

Název v anglickém jazyce

Efficient adsorption of endocrine-disrupting pesticides from water with a reusable magnetic covalent organic framework

Popis výsledku anglicky

A magnetic covalent organic framework (COF) is applied for the first time as adsorbent for the extraction of endocrine-disrupting pesticides from water. High adsorption efficiencies were found for lipophilic chlorpyrifos and atrazine, with calculated maximum adsorption capacities of 270 mg g(-1) and 54 mg g(-1), respectively, outperforming reported adsorbents, such as activated carbon, graphene, or metal-organic frameworks. Polar diquat showed very poor adsorption efficiency, indicating that hydrophobic interactions play a role in the adsorption. Calculations revealed that the interactions between the COF and the pesticides are mainly based on van der Waals interactions. Finally, recycling experiments showed that both pesticides can be recovered with an efficiency of over 90% using acetonitrile as solvent, with merely minor losses in adsorption capacity after five consecutive cycles of adsorption/desorption. The present study promotes further exploration of the possible application of COFs for the extraction and pre-concentration of pesticides in environmental matrices.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Microporous and Mesoporous Materials

ISSN

1387-1811

e-ISSN

—

Svazek periodika

2020

Číslo periodika v rámci svazku

307

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

110523

Kód UT WoS článku

000572431000008

EID výsledku v databázi Scopus

2-s2.0-85089212222