Ana Ambrož (Author), Irena Ban (Author), Thomas Luxbacher (Author)

Abstract

Magnetic nanoparticles (MNPs) have received increasing attention for various applications due to their fast synthesis, versatile functionalization, and recyclability by the application of a magnetic field. The high surface-to-volume ratio of MNP dispersions has suggested their use as an adsorbent for the removal of heavy metal ions. We investigated the applicability of MNPs composed of a maghemite core surrounded by a silica shell functionalized with aminopropylsilane, γ-Fe2O3-NH4OH@SiO2(APTMS), for the removal of neodymium ions (Nd3+) from aqueous solution. The MNPs were characterized for their size, composition, surface functionality and charge. Despite of the promising properties of MNPs, their removal from the aqueous dispersion with an external magnet was not sufficient to reliably quantify the adsorption of Nd3+ by UV-Vis spectroscopy.

Keywords

rare earth elements;maghemite;nanoparticles;UV-Vis spectroscopy;adsorption;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FKKT - Faculty of Chemistry and Chemical Engineering
UDC: 620.3
COBISS: 160368643 Link will open in a new window
ISSN: 1580-3155
Views: 29
Downloads: 3
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Other data

Secondary language: Slovenian
Secondary abstract: Magnetni nanodelci (MNP) so zaradi svoje hitre sinteze, vsestranske funkcionalizacije in možnosti recikliranja z uporabo magnetnega polja deležni vse večje pozornosti za različne aplikacije. Visoko razmerje med površino in prostornino disperzij MNP predstavlja zmožnost njihove uporabe kot adsorbenta za odstranjevanje ionov težkih kovin. Raziskali smo uporabnost MNP, sestavljenih iz maghemitnega jedra in obdanih s kremenčevo lupino, funkcionalizirano z aminopropilsilanom, γ-Fe2O3-NH4OH@SiO2 (APTMS), za odstranjevanje neodimovih ionov (Nd3+) iz vodne raztopine. MNP so bili karakterizirani glede na velikost, sestavo, površinsko funkcionalnost in naboj. Kljub obetavnim lastnostim MNP pa njihova odstranitev iz vodne disperzije z zunanjim magnetom ni zadostovala za zanesljivo kvantificiranje adsorpcije Nd3+ z UV-Vis spektroskopijo.
Secondary keywords: redki elementi zemlje;nanodelci;spektroskopija;adsorpcija;
Type (COBISS): Scientific work
Pages: str. 826-836
Volume: ǂVol. ǂ69
Chronology: 2022
DOI: 10.17344/acsi.2022.7570
ID: 19757348