C18-functionalized Fe3O4/SiO2 magnetic nano-sorbent for PAHs removal from water
The result's identifiers
Result code in 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>
Alternative codes found
RIV/44555601:13440/21:43896325 RIV/44555601:13520/21:43896325 RIV/61989100:27640/21:10247771 RIV/61989100:27710/21:10247771
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
C18-functionalized Fe3O4/SiO2 magnetic nano-sorbent for PAHs removal from water
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Technology & Innovation
ISSN
2352-1864
e-ISSN
2352-1864
Volume of the periodical
24
Issue of the periodical within the volume
NOV
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
13
Pages from-to
101905
UT code for WoS article
000702864500009
EID of the result in the Scopus database
2-s2.0-85120178131