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Tailoring Nanoadsorbent Surfaces: Separation of Rare Earths and Late Transition Metals in Recycling of Magnet Materials

Vardanyan, Ani and Guillon, Anna and Budnyak, Tetyana and Seisenbaeva, Gulaim (2022). Tailoring Nanoadsorbent Surfaces: Separation of Rare Earths and Late Transition Metals in Recycling of Magnet Materials. Nanomaterials. 12 :6 , 974
[Research article]

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Abstract

Novel silica-based adsorbents were synthesized by grafting the surface of SiO2 nanoparticles with amine and sulfur containing functional groups. Produced nanomaterials were characterized by SEM-EDS, AFM, FTIR, TGA and tested for adsorption and separation of Rare Earth Elements (REE) (Nd3+ and Sm3+) and Late Transition Metals (LTM) (Ni2+ and Co2+) in single and mixed solutions. The adsorption equilibrium data analyzed and fitted well to Langmuir isotherm model revealing monolayer adsorption process on homogeneously functionalized silica nanoparticles (NPs). All organo-silicas showed high adsorption capacities ranging between 0.5 and 1.8 mmol/g, depending on the function and the target metal ion. Most of these ligands demonstrated higher affinity towards LTM, related to the nature of the functional groups and their arrangement on the surface of nanoadsorbent.

Authors/Creators:Vardanyan, Ani and Guillon, Anna and Budnyak, Tetyana and Seisenbaeva, Gulaim
Title:Tailoring Nanoadsorbent Surfaces: Separation of Rare Earths and Late Transition Metals in Recycling of Magnet Materials
Series Name/Journal:Nanomaterials
Year of publishing :2022
Volume:12
Number:6
Article number:974
Number of Pages:14
Publisher:MDPI
ISSN:2079-4991
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 104 Chemical Sciences > Materials Chemistry
Keywords:recycling, silica nanoadsorbents, adsorption, REE, LTM, functional ligands
URN:NBN:urn:nbn:se:slu:epsilon-p-116795
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116795
Additional ID:
Type of IDID
DOI10.3390/nano12060974
Web of Science (WoS)000774231000001
ID Code:28268
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Molecular Sciences
Deposited By: SLUpub Connector
Deposited On:08 Jun 2022 12:27
Metadata Last Modified:08 Jun 2022 12:31

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