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Title: Microporous Framework (Nb, Fe)-Silicate with Much Potential to Remove Rare-Earth Elements from Waters
Author: Lin, Zhi
Tavares, Daniela
Pereira, Eduarda
Rocha, João
Issue Date: 27-Dec-2022
Publisher: Wiley-Blackwell
Abstract: Nanoparticles of a new small-pore metal silicate formulated as Na2.9 (Nb1.55 Fe0.45 )Si2 O10  ⋅ xH2 O and exhibiting the structure of previously reported Rb2 (Nb2 O4 )(Si2 O6 ) ⋅ H2 O have been synthesized under mild hydrothermal conditions. Replacement of the bulky Rb+ by smaller Na+ ions was accomplished by stabilizing the framework structure via partial occupancy of the Nb5+ sites by Fe3+ ions. Exploratory ion-exchange assays evidence the considerable potential of this new silicate to remove rare-earth elements from aqueous solutions.
Peer review: yes
DOI: 10.1002/chem.202202435
ISSN: 0947-6539
Appears in Collections:CICECO - Artigos

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