Journal
ADVANCED MATERIALS INTERFACES
Volume 8, Issue 16, Pages -Publisher
WILEY
DOI: 10.1002/admi.202100730
Keywords
metal-organic frameworks; nanotube membranes; rare-earth elements recovery; single-walled carbon nanotubes; water remediation
Funding
- Ministero dell'Universita e della Ricerca (Italy)
- MINECO (Spain) [CTQ2016-75671-P, MDM-2015-0538]
- PON Ricerca e Innovazione 2014-2020 [FOREST-COMP - CUP H56C18000080005]
- Regione Calabria
- la Caixa Foundation [ID100010434, LCF/BQ/PR19/11700011]
- Fondazione CARIPLO
- Fondazione CARIPLO/Economia Circolare: ricerca per un futuro sostenibile'' 2019, MOCA [2019-2090]
- European Research Council under the European Union [814804]
- European Research Council (ERC) [814804] Funding Source: European Research Council (ERC)
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The novel BioMOF@SWCNT-BP membrane shows high efficiency in recovering lanthanides from water, improving capture properties and reducing environmental pollution.
Human society is facing-among other environmental threats-an enormous challenge due to human activities. The extensive use of high-tech devices and electronics equipment in the daily life makes, among others, rare-earth elements (REEs) recovery from secondary sources highly required. Here, a novel bioMOF-based single-walled carbon nanotube buckypaper (SWCNTBP) is presented as a new and efficient composite material (BioMOF@SWCNT-BP). The flexible and highly crystalline metal-organic framework (MOF), prepared from the natural amino acid L-threonine, has been homogeneously dispersed within the tangled net of a self-standing SWCNT-BP for lanthanides recovery from water. This MOF-carbon-based membrane exhibits high efficiency, either in static or dynamic regimes, in the recovery of lanthanides from aqueous streams outperforming the state-of-the-art. The capture performances of BPs are successfully improved after incorporation of such MOF featuring hexagonal functional channels decorated with the threonine amino acid residues, pointing toward the accessible void spaces, which boosts the capture properties of the final membrane, providing the adaptable functional environment to interact with lanthanides. This material's preparation presents also a potential for large-scale applications with a potential benefit on natural aquatic ecosystems as well. It is highly demanded because REEs from non-recycled waste materials are potential pollutants for surface waters.
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