Amine-functionalized magnetite-silica nanoparticles as effective adsorbent for removal of uranium(VI) ions
PBN-AR
Instytucja
Instytut Agrofizyki im. Bohdana Dobrzańskiego Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
JOURNAL OF MOLECULAR LIQUIDS
ISSN
0167-7322
EISSN
Wydawca
ELSEVIER SCIENCE BV
DOI
URL
Rok publikacji
2019
Numer zeszytu
111217
Strony od-do
1-10
Numer tomu
290
Identyfikator DOI
Liczba arkuszy
Autorzy
(liczba autorów: 5)
Pozostali autorzy
+ 4
Autorzy przekładu
(liczba autorów przekładu: 0)
Słowa kluczowe
angielski
Magnetite nanoparticles
Core/shell silica particles
Amine functional groups
Surface chemistry
Adsorption of uranium ions
Streszczenia
Język
angielski
Treść
Magnetite nanoparticles Core/shell silica particles In our studies the Fe3O4/SiO2/C3H6NH2 (MSA) adsorbent was synthesized by the green-chemistry method based on hydrolysis and condensation of tetraethoxysilane and (3-aminopropyl)triethoxysilane. The obtained material was fully characterized by a wide range of instrumental techniques and employed as an adsorbent for removal of uranium(VI) ions which is considered as a hazardous metal. It was found that the adsorption process is very fast, and equilibrium is reached after about 4 h. The data was fitted with the pseudo-1st (PFO) and pseudo-2nd order (PSO) equations. It was turned out that better fit was obtained for the PSO kinetic model. The Freundlich, Langmuir–Freundlich and Dubinin–Radushkevich isotherm equations were used to calculate the equilibrium adsorption data. The static sorption capacity was 118 mg·g−1. The energy value En = 14.8 kJ·mol−1 (293 K) calculated based on the Dubinin–Radushkevich isotherm equation indicates that chemisorption is a dominant mechanism. The obtained data show that MSA material can be used as a promising adsorbent for radioactive metals removal.
Inne
System-identifier
PX-5d5bd27ad5de4221b32f6d8d
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