Premium
Microporous Framework (Nb, Fe)‐Silicate with Much Potential to Remove Rare‐Earth Elements from Waters
Author(s) -
Lin Zhi,
Tavares Daniela,
Pereira Eduarda,
Rocha João
Publication year - 2022
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202202435
Subject(s) - silicate , microporous material , hydrothermal circulation , aqueous solution , ion exchange , inorganic chemistry , ion , rare earth element , chemical engineering , chemistry , materials science , rare earth , mineralogy , organic chemistry , engineering
Nanoparticles of a new small‐pore metal silicate formulated as Na 2.9 (Nb 1.55 Fe 0.45 )Si 2 O 10 ⋅ x H 2 O and exhibiting the structure of previously reported Rb 2 (Nb 2 O 4 )(Si 2 O 6 ) ⋅ H 2 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 Nb 5+ sites by Fe 3+ ions. Exploratory ion‐exchange assays evidence the considerable potential of this new silicate to remove rare‐earth elements from aqueous solutions.