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Terbium Ion Adsorption from Aqueous Solution by Using Magnetic γ-Fe2O3-NH4[email protected]2 Nanoparticles Functionalized with Amino Groups

1
Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia
2
Institute for Environmental Protection and Sensors, Beloruska 7, SI-2000 Maribor, Slovenia
3
Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia
*
Authors to whom correspondence should be addressed.
Materials 2019, 12(8), 1294; https://doi.org/10.3390/ma12081294
Received: 19 March 2019 / Revised: 15 April 2019 / Accepted: 18 April 2019 / Published: 19 April 2019
(This article belongs to the Special Issue Advances in Microporous and Mesoporous Materials)
New magnetic stabilized and functionalized [email protected] nanoparticles (NPs) were synthesized in a simple way and characterized in order to adsorb Tb3+ from aqueous solution with a very low Tb3+ concentration. For the fluorescence determination of adsorption efficiency and capacity, tiron monohydrate as a ligand was used. The obtained results confirm the potential of the synthesized magnetic γ-Fe2O3-NH4[email protected]2 NPs, functionalized with (3-Aminopropyl) trimethoxysilane (APTMS), to be used for adsorption of Tb3+ from aqueous solution, with the possibility of its removal from aqueous solution via an external magnet. The endothermic and spontaneous adsorption follows a pseudo-second-order kinetic model, and the adsorption equilibrium data fit the Temkin isotherm well. The maximum adsorption efficiency from aqueous solution with a 2 × 10−6 M concentration of Tb3+ is over 90% at pH 7. View Full-Text
Keywords: rare earth elements; [email protected] nanoparticles; adsorption; magnetic separation; kinetic models rare earth elements; [email protected] nanoparticles; adsorption; magnetic separation; kinetic models
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MDPI and ACS Style

Kegl, T.; Košak, A.; Lobnik, A.; Ban, I. Terbium Ion Adsorption from Aqueous Solution by Using Magnetic γ-Fe2O3-NH4[email protected]2 Nanoparticles Functionalized with Amino Groups. Materials 2019, 12, 1294. https://doi.org/10.3390/ma12081294

AMA Style

Kegl T, Košak A, Lobnik A, Ban I. Terbium Ion Adsorption from Aqueous Solution by Using Magnetic γ-Fe2O3-NH4[email protected]2 Nanoparticles Functionalized with Amino Groups. Materials. 2019; 12(8):1294. https://doi.org/10.3390/ma12081294

Chicago/Turabian Style

Kegl, Tina, Aljoša Košak, Aleksandra Lobnik, and Irena Ban. 2019. "Terbium Ion Adsorption from Aqueous Solution by Using Magnetic γ-Fe2O3-NH4[email protected]2 Nanoparticles Functionalized with Amino Groups" Materials 12, no. 8: 1294. https://doi.org/10.3390/ma12081294

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