C18-functionalized Fe3O4/SiO2 magnetic nano-sorbent for PAHs removal from water

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F21%3A00546642" target="_blank" >RIV/61388980:_____/21:00546642 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/44555601:13440/21:43896325 RIV/44555601:13520/21:43896325 RIV/61989100:27640/21:10247771 RIV/61989100:27710/21:10247771

Výsledek na webu

<a href="https://doi.org/10.1016/j.eti.2021.101905" target="_blank" >https://doi.org/10.1016/j.eti.2021.101905</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eti.2021.101905" target="_blank" >10.1016/j.eti.2021.101905</a>

Jazyk výsledku

angličtina

Název v původním jazyce

C18-functionalized Fe3O4/SiO2 magnetic nano-sorbent for PAHs removal from water

Popis výsledku v původním jazyce

Magnetic sorbents represent very promising materials for environmental applications due to their simple synthesis, separability in a magnetic field, low toxicity, wide range of possible modifications, and usability in heterogeneous systems. We report on the synthesis, characterization, and application of magnetically separable Fe3O4/SiO2 sorbent surface-modified with octadecyl chains (C18). Preparation of Fe3O4 cores by co-precipitation from Fe2+ and Fe3+ chlorides in an alkaline aqueous solution was followed by SiO2 shell synthesis and functionalization with C18. Fe3O4, Fe3O4/SiO2, and Fe3O4/SiO2-C18 samples were characterized by SEM, TOC, XRD, BET, and tested for purification of water contaminated by various polycyclic aromatic hydrocarbons (PAHs). Since PAHs are formed as by-products of pyrolysis, a rapidly evolving technology for transformation of waste into green chemicals, there is a need for efficient sorbents suitable for PAHs removal from the environment. The use of Fe3O4/SiO2-C18 for adsorption of 16 different PAHs has not yet been reported. The adsorption was examined by gas chromatography with mass spectrometry and studied using molecular modeling. Comparison of adsorption efficiency 7.7 for Fe3O4, Fe3O4/SiO2, and Fe3O4/SiO2- C18 revealed a positive effect of C18. When averaging all Fe3O4/SiO2-C18 doses tested (1-8 g/L), 7.7 > 80% and > 90% was found for 14 and 7 PAHs, respectively, out of a total of 16 tested PAHs. The highest 7.7 values were found for medium-heavy PAHs (178.2-228.2 g/mol). Exhibiting high efficiency and average capacity of similar to 1 mu g/g, the Fe3O4/SiO2-C18 is suitable for pre-concentration purposes of PAHs in analytical sample extractions from water. (C) 2021 Elsevier B.V. All rights reserved.

Název v anglickém jazyce

C18-functionalized Fe3O4/SiO2 magnetic nano-sorbent for PAHs removal from water

Popis výsledku anglicky

Magnetic sorbents represent very promising materials for environmental applications due to their simple synthesis, separability in a magnetic field, low toxicity, wide range of possible modifications, and usability in heterogeneous systems. We report on the synthesis, characterization, and application of magnetically separable Fe3O4/SiO2 sorbent surface-modified with octadecyl chains (C18). Preparation of Fe3O4 cores by co-precipitation from Fe2+ and Fe3+ chlorides in an alkaline aqueous solution was followed by SiO2 shell synthesis and functionalization with C18. Fe3O4, Fe3O4/SiO2, and Fe3O4/SiO2-C18 samples were characterized by SEM, TOC, XRD, BET, and tested for purification of water contaminated by various polycyclic aromatic hydrocarbons (PAHs). Since PAHs are formed as by-products of pyrolysis, a rapidly evolving technology for transformation of waste into green chemicals, there is a need for efficient sorbents suitable for PAHs removal from the environment. The use of Fe3O4/SiO2-C18 for adsorption of 16 different PAHs has not yet been reported. The adsorption was examined by gas chromatography with mass spectrometry and studied using molecular modeling. Comparison of adsorption efficiency 7.7 for Fe3O4, Fe3O4/SiO2, and Fe3O4/SiO2- C18 revealed a positive effect of C18. When averaging all Fe3O4/SiO2-C18 doses tested (1-8 g/L), 7.7 > 80% and > 90% was found for 14 and 7 PAHs, respectively, out of a total of 16 tested PAHs. The highest 7.7 values were found for medium-heavy PAHs (178.2-228.2 g/mol). Exhibiting high efficiency and average capacity of similar to 1 mu g/g, the Fe3O4/SiO2-C18 is suitable for pre-concentration purposes of PAHs in analytical sample extractions from water. (C) 2021 Elsevier B.V. All rights reserved.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Environmental Technology & Innovation

ISSN

2352-1864

e-ISSN

2352-1864

Svazek periodika

24

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

101905

Kód UT WoS článku

000702864500009

EID výsledku v databázi Scopus

2-s2.0-85120178131