Synthesis and Enhanced Capture Properties of a New BioMOF@SWCNT‐BP: Recovery of the Endangered Rare‐Earth Elements from Aqueous Systems

Tursi, Antonio; Mastropietro, Teresa F.; Bruno, Rosaria; Baratta, Mariafrancesca; Ferrando‐Soria, Jesús; Машин, А. И.; Nicoletta, Fiore Pasquale; Pardo, Emilio; Filpo, Giovanni De; Armentano, Donatella

doi:10.1002/admi.202100730

Cited by 17 publications

(13 citation statements)

References 46 publications

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“…Nevertheless, these measurements confirm the high mechanical stability of both membranes (see Figure S16 ). 68 …”

Section: Resultsmentioning

confidence: 99%

“…The combination of SWCNT-BP and MTV-MOF, materials that exhibit great capture properties individually, originates a biocompatible, highly stable adsorbent membrane MTV-MOF/SWCNT-BP with high performance for Pb(II) removal from aqueous solution. It represents a step forward with respect to the previous composite we reported so far, where the MOF embedded inside the CNTs was completely different. In that case, it was prepared with a different amino acid derivative, threonine, owning an alcoholic chemical functionality of the type −CH(CH 3 )OH confined within the pores of the MOF and exhibiting a consequent chemical affinity for rare earth elements (REEs) as target metal ions.…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, these measurements confirm the high mechanical stability of both membranes (see Figure S16). 68 From the perspective of potential industrial applications, and being aware of the known stability for either SWCNT-BP 68 or MTV-MOF 49 after regeneration processes, the stability of the MTV-MOF/SWCNT-BP membrane after a regeneration process was also evaluated. In this regard, recovered Pb 2+ was extracted after suspension of the membrane in a 10% (v/v %) aqueous solution of 2-mercaptoethanol for 24 h. The reusability of MTV-MOF/SWCNT-BP after the extraction process was studied over five subsequent cycles of adsorption and regeneration.…”

Section: Acs Applied Nano Materialsmentioning

confidence: 99%

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Multivariate Metal–Organic Framework/Single-Walled Carbon Nanotube Buckypaper for Selective Lead Decontamination

Baratta

Mastropietro

Bruno

et al. 2022

ACS Appl. Nano Mater.

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The search for efficient technologies empowering the selective capture of environmentally harmful heavy metals from wastewater treatment plants, at affordable prices, attracts wide interest but constitutes an important technological challenge. We report here an eco-friendly single-walled carbon nanotube buckypaper (SWCNT-BP) enriched with a multivariate amino acid-based metal–organic framework (MTV-MOF) for the efficient and selective removal of Pb 2+ in multicomponent water systems. Pristine MTV-MOF was easily immobilized within the porous network of entangled SWCNTs, thus obtaining a stable self-standing adsorbing membrane filter ( MTV-MOF/SWCNT-BP ). SWCNT-BP alone shows a moderately good removal performance with a maximum adsorption capacity of 180 mg·g –1 and a considerable selectivity for Pb(II) ions in highly concentrated multi-ion solutions over a wide range of lead concentration (from 200 to 10000 ppb). Remarkably, these features were outperformed with the hybrid membrane filter MTV-MOF/SWCNT-BP , exhibiting enhanced selectivity and adsorption capacity (310 mg·g –1 , which is up to 42% higher than that of the neat SWCNT-BP) and consequently enabling a more efficient and selective removal of Pb 2+ from aqueous media. MTV-MOF/SWCNT-BP was able to reduce [Pb 2+ ] from the dangerous 1000 ppb level to acceptable limits for drinking water, below 10 ppb, as established by the current EPA and WHO limits. Thus, the eco-friendly composite MTV-MOF/SWCNT-BP shows the potential to be effectively used several times as a reliable adsorbent for Pb 2+ removal for household drinking water or in industrial treatment plants for water and wastewater lead decontamination.

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“…Nevertheless, these measurements confirm the high mechanical stability of both membranes (see Figure S16 ). 68 …”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Acs Applied Nano Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Multivariate Metal–Organic Framework/Single-Walled Carbon Nanotube Buckypaper for Selective Lead Decontamination

Baratta

Mastropietro

Bruno

et al. 2022

ACS Appl. Nano Mater.

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“…In addition, BPs are characterized by a porous structure, low density, and interesting thermal, rheological, and electrical properties [43]. In order to enhance their properties, BPs are used to host other materials such as MOF [36,44] and GO [42,45], leading to the formation of composite materials with superior performance in different fields such as flexible sensors [45], batteries [46], smart packaging [47], artificial muscles [48], fire retardant [49], and membrane-based processes, namely desalinization and catalysis [40,50]. In the literature, few works deal with the application of composite BPs as adsorbent membranes.…”

Section: Introductionmentioning

confidence: 99%

“…In the literature, few works deal with the application of composite BPs as adsorbent membranes. Recently, SWCNT BPs incorporating MOFs have been proposed as boosted adsorbents for the recovery of rare-earth elements [44] and the selective capture of lead [36] from wastewater. The presence of MOF in SWCNT BPs was found to be beneficial for the adsorption of all tested lanthanides, with the Ce 3+ recovery reaching the value of 263.30 mg of cerium adsorbed per gram of MOF-SWCNT BP.…”

Section: Introductionmentioning

confidence: 99%

GO-SWCNT Buckypapers as an Enhanced Technology for Water Decontamination from Lead

et al. 2022

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Water decontamination is an important challenge resulting from the incorrect disposal of heavy metal waste into the environment. Among the different available techniques (e.g., filtration, coagulation, precipitation, and ion-exchange), adsorption is considered the cheapest and most effective procedure for the removal of water pollutants. In the last years, several materials have been tested for the removal of heavy metals from water, including metal-organic frameworks (MOFs), single-walled carbon nanotubes (SWCNTs), and graphene oxide (GO). Nevertheless, their powder consistency, which makes the recovery and reuse after adsorption difficult, is the main drawback for these materials. More recently, SWCNT buckypapers (SWCNT BPs) have been proposed as self-standing porous membranes for filtration and adsorption processes. In this paper, the adsorption capacity and selectivity of Pb2+ (both from neat solutions and in the presence of other interferents) by SWCNT BPs were evaluated as a function of the increasing amount of GO used in their preparation (GO-SWCNT buckypapers). The highest adsorption capacity, 479 ± 25 mg g−1, achieved for GO-SWCNT buckypapers with 75 wt.% of graphene oxide confirmed the effective application of such materials for cheap and fast water decontamination from lead.

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Evaluation of the Ecotoxicity of New Polyurethane Composites on Target Organisms for Aquatic and Atmospheric Environments

Corapi

Gallo

Lucadamo

et al. 2022

Enviro Toxic and Chemistry

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The present study investigated if new biocomposite materials, polyurethanes (PURs) added with functionalized cellulose fibers, produce potential toxic effects on two target organisms currently used in biomonitoring the quality of two different environmental compartments. Natural fibers were extracted from the species Spartium junceum L., a shrub commonly found in the southern region of the Mediterranean having a high cellulose content. All PURs produced were characterized by Fourier-transform infrared spectroscopy, and their structure was analyzed by scanning electron microscopy. We measured the effects of exposure to aromatic and aliphatic PUR composites (containing or not cellulose fibers) on the aquatic model organism Daphnia magna Straus, a freshwater crustacean (Cladocera), and a biomonitor of air quality, the fruticose epiphytic lichen Pseudevernia furfuracea (L.) Zopf. Leachates from aliphatic PUR composite not containing cellulose are more toxic to D. magna than all others, showing a slight acute toxicity in the case of the shortest exposure (24 h) and a moderate acute toxicity in the longer one (48 h). This effect is most likely due to the presence of free organic ammines and amides, which, in their turn, are immobilized in composites containing cellulosic fibers because of the considerable amount of chemical functional groups. Regarding lichens, both types of aliphatic PURs resulted in a toxic effect. Formulate not added with cellulose strongly promoted fungal peroxidation, whereas that which was functionalized affected the pigment concentration of the algal partner. Our results suggest that the use of cellulose in PUR production, in general, can limit the ecotoxicological effects on both test organisms and reduce the potential environmental impact due to this type of polymer.

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Synthesis and Enhanced Capture Properties of a New BioMOF@SWCNT‐BP: Recovery of the Endangered Rare‐Earth Elements from Aqueous Systems

Cited by 17 publications

References 46 publications

Multivariate Metal–Organic Framework/Single-Walled Carbon Nanotube Buckypaper for Selective Lead Decontamination

Multivariate Metal–Organic Framework/Single-Walled Carbon Nanotube Buckypaper for Selective Lead Decontamination

GO-SWCNT Buckypapers as an Enhanced Technology for Water Decontamination from Lead

Evaluation of the Ecotoxicity of New Polyurethane Composites on Target Organisms for Aquatic and Atmospheric Environments

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