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Synthesis and characterization of magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles for adsorption of 16 rare earth elements

In this study, novel magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles were prepared for efficiently adsorbing and recycling REEs. Fe(3)O(4)@mSiO(2)–DODGA was characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM), Fourier...

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Detalles Bibliográficos
Autores principales: Li, Jingrui, Gong, Aijun, Li, Fukai, Qiu, Lina, Zhang, Weiwei, Gao, Ge, Liu, Yu, Li, Jiandi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9090902/
https://www.ncbi.nlm.nih.gov/pubmed/35558293
http://dx.doi.org/10.1039/c8ra07762b
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author Li, Jingrui
Gong, Aijun
Li, Fukai
Qiu, Lina
Zhang, Weiwei
Gao, Ge
Liu, Yu
Li, Jiandi
author_facet Li, Jingrui
Gong, Aijun
Li, Fukai
Qiu, Lina
Zhang, Weiwei
Gao, Ge
Liu, Yu
Li, Jiandi
author_sort Li, Jingrui
collection PubMed
description In this study, novel magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles were prepared for efficiently adsorbing and recycling REEs. Fe(3)O(4)@mSiO(2)–DODGA was characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM), Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). The adsorption behavior of Fe(3)O(4)@mSiO(2)–DODGA was investigated by ICP-OES. The results showed that the content of DODGA in the adsorbent was 367 μmol g(−1). Fe(3)O(4)@mSiO(2)–DODGA exhibited the highest adsorption rates for 15 REEs, except Tm, in a 2 mol L(−1) nitric acid solution. Among these elements, the adsorption rates for Nd, Sm, Eu, Dy, Ho, Yb, Lu, Y and Sc ranged from 85.1% to 100.1%. The desorption rates for all 16 REE ions reached their maximum values when 0.01 mol L(−1) EDTA was used as the eluent. The desorption rates for Nd, Ce, Sm, Eu, Ho, Yb, Lu, Y, and Sc were 87.7–99.8%. Fe(3)O(4)@mSiO(2)–DODGA had high stability in 2 mol L(−1) HNO(3) and could be used five times without significant loss of adsorption capacity. Moreover, these nanoparticles had high selectivity, and their adsorption rate was not affected even in a high-concentration solution of a coexisting ion. Therefore, 8 REE ions (Nd, Sm, Eu, Ho, Yb, Lu, Y, and Sc) were selected for the study of adsorption kinetics and adsorption isotherm experiments. It was demonstrated that the values of Q(e) (equilibrium adsorption capacity) for Nd, Sm, Eu, Ho, Yb, Lu, Y, and Sc were 14.28–60.80 mg g(−1). The adsorption of REEs on Fe(3)O(4)@mSiO(2)–DODGA followed the pseudo-second-order kinetic model, Elovich model and Langmuir isotherm model, which indicated that the adsorption process of Fe(3)O(4)@mSiO(2)–DODGA for REEs comprised single-layer adsorption on a non-uniform surface controlled by chemical adsorption. It was concluded that Fe(3)O(4)@mSiO(2)–DODGA represents a new material for the adsorption of REEs in strongly acidic solutions.
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spelling pubmed-90909022022-05-11 Synthesis and characterization of magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles for adsorption of 16 rare earth elements Li, Jingrui Gong, Aijun Li, Fukai Qiu, Lina Zhang, Weiwei Gao, Ge Liu, Yu Li, Jiandi RSC Adv Chemistry In this study, novel magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles were prepared for efficiently adsorbing and recycling REEs. Fe(3)O(4)@mSiO(2)–DODGA was characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM), Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). The adsorption behavior of Fe(3)O(4)@mSiO(2)–DODGA was investigated by ICP-OES. The results showed that the content of DODGA in the adsorbent was 367 μmol g(−1). Fe(3)O(4)@mSiO(2)–DODGA exhibited the highest adsorption rates for 15 REEs, except Tm, in a 2 mol L(−1) nitric acid solution. Among these elements, the adsorption rates for Nd, Sm, Eu, Dy, Ho, Yb, Lu, Y and Sc ranged from 85.1% to 100.1%. The desorption rates for all 16 REE ions reached their maximum values when 0.01 mol L(−1) EDTA was used as the eluent. The desorption rates for Nd, Ce, Sm, Eu, Ho, Yb, Lu, Y, and Sc were 87.7–99.8%. Fe(3)O(4)@mSiO(2)–DODGA had high stability in 2 mol L(−1) HNO(3) and could be used five times without significant loss of adsorption capacity. Moreover, these nanoparticles had high selectivity, and their adsorption rate was not affected even in a high-concentration solution of a coexisting ion. Therefore, 8 REE ions (Nd, Sm, Eu, Ho, Yb, Lu, Y, and Sc) were selected for the study of adsorption kinetics and adsorption isotherm experiments. It was demonstrated that the values of Q(e) (equilibrium adsorption capacity) for Nd, Sm, Eu, Ho, Yb, Lu, Y, and Sc were 14.28–60.80 mg g(−1). The adsorption of REEs on Fe(3)O(4)@mSiO(2)–DODGA followed the pseudo-second-order kinetic model, Elovich model and Langmuir isotherm model, which indicated that the adsorption process of Fe(3)O(4)@mSiO(2)–DODGA for REEs comprised single-layer adsorption on a non-uniform surface controlled by chemical adsorption. It was concluded that Fe(3)O(4)@mSiO(2)–DODGA represents a new material for the adsorption of REEs in strongly acidic solutions. The Royal Society of Chemistry 2018-11-22 /pmc/articles/PMC9090902/ /pubmed/35558293 http://dx.doi.org/10.1039/c8ra07762b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Li, Jingrui
Gong, Aijun
Li, Fukai
Qiu, Lina
Zhang, Weiwei
Gao, Ge
Liu, Yu
Li, Jiandi
Synthesis and characterization of magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles for adsorption of 16 rare earth elements
title Synthesis and characterization of magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles for adsorption of 16 rare earth elements
title_full Synthesis and characterization of magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles for adsorption of 16 rare earth elements
title_fullStr Synthesis and characterization of magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles for adsorption of 16 rare earth elements
title_full_unstemmed Synthesis and characterization of magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles for adsorption of 16 rare earth elements
title_short Synthesis and characterization of magnetic mesoporous Fe(3)O(4)@mSiO(2)–DODGA nanoparticles for adsorption of 16 rare earth elements
title_sort synthesis and characterization of magnetic mesoporous fe(3)o(4)@msio(2)–dodga nanoparticles for adsorption of 16 rare earth elements
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9090902/
https://www.ncbi.nlm.nih.gov/pubmed/35558293
http://dx.doi.org/10.1039/c8ra07762b
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