CoFe2O4@MIL-100(Fe) hybrid magnetic nanoparticles exhibit fast and selective adsorption of arsenic with high adsorption capacity

Yang, Ji‐Chun; Yin, Xue‐Bo

doi:10.1038/srep40955

Cited by 87 publications

(48 citation statements)

References 58 publications

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“…Cobalt ferrite nanoparticles were synthesized via solvothermal technique. 59 Ethylene glycol plays an important role in the formation of cobalt ferrite nanoparticles. Ethylene glycol, having relatively high boiling point, is a strong reducing agent and has been widely used for the synthesis of monodisperse metal or metal oxide nanoparticles.…”

Section: Results and Discussionmentioning

confidence: 99%

Expanding the Horizon of Multicomponent Oxidative Coupling Reaction via the Design of a Unique, 3D Copper Isophthalate MOF-Based Catalyst Decorated with Mixed Spinel CoFe₂O₄ Nanoparticles

et al. 2018

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This work discloses the first ever magnetically retrievable copper isophthalate-based metal-organic framework (MOF) decorated with surface-modified cobalt ferrite (CoFe 2 O 4 ) nanoparticles that have been utilized as catalytic reactors for obtaining a relatively large number of biologically active benzimidazole scaffolds. A facile one-pot solvothermal approach was employed for obtaining spherical and monodisperse CoFe 2 O 4 nanoparticles, which were subsequently modified using suitable protecting and functionalizing agents. Finally, these functionalized magnetic nanoparticles were anchored onto the three-dimensional copper isophthalate MOF via a covalent immobilization methodology. The exploitation of advanced microscopic tools such as transmission electron microscopy and scanning electron microscopy provided valuable insights into the morphology of the immobilized MOF. These results indicated that the surface-modified magnetic nanoparticles had grown onto the surface of copper-5-nitroisophthalic acid MOF. A greener C–H functionalization strategy that involves the multicomponent oxidative cross-coupling between two different set of amines (sp 2 -hybridized nitrogen-containing anilines and sp 3 -hybridized nitrogen-containing alkyl/aryl amine derivatives) and sodium azide has been incorporated to provide access to a broad spectrum of the value-added target benzimidazole moieties. It is interesting to note that this magnetic MOF-catalyzed protocol not only replaces toxic solvents with water, which is a green solvent, but also enhances the economic competitiveness since the magnetic catalyst can be readily recovered and recycled for eight consecutive runs.

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Section: Results and Discussionmentioning

confidence: 99%

Expanding the Horizon of Multicomponent Oxidative Coupling Reaction via the Design of a Unique, 3D Copper Isophthalate MOF-Based Catalyst Decorated with Mixed Spinel CoFe₂O₄ Nanoparticles

et al. 2018

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“…XPS and FTIR analysis indicated that electrostatic attraction and the formation of arsenic complexes with hydroxyl and amine groups on the adsorbent surface may be involved in the adsorption process. [54], have been recently studied for the simultaneous removal of As(III) and As(V). The As(III) and As(V) adsorption capacities of Fe 3 O 4 @MIL-101 were reported to be 121.5 and 80.0 mg g −1 at a pH of 7, respectively [53].…”

Section: Zif Family Mofs For Arsenic Adsorptionmentioning

confidence: 99%

“…This hybrid material exhibited excellent stability and high affinity towards both As(III) and As(V). CoFe 2 O 4 @MIL-100(Fe) exhibited a fast adsorption rate and high adsorption capacity for As(III) and As(V), due to its nanoscale size and mesoporous structure [54]. The maximum adsorption capacities were 114.8 mg g −1 for As(V) and 143.6 mg g −1 for As(III).…”

Section: Zif Family Mofs For Arsenic Adsorptionmentioning

confidence: 99%

“…Two kinds of magnetic MOF composites, including Fe 3 O 4 @MIL-101 [ 53 ] and CoFe 2 O 4 @MIL-100(Fe) [ 54 ], have been recently studied for the simultaneous removal of As(III) and As(V). The As(III) and As(V) adsorption capacities of Fe 3 O 4 @MIL-101 were reported to be 121.5 and 80.0 mg g −1 at a pH of 7, respectively [ 53 ].…”

Section: Recent Studies On Mofs For the Removal Of Heavy Metal Ionmentioning

confidence: 99%

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Recent Progress in Heavy Metal Ion Decontamination Based on Metal–Organic Frameworks

Chen

Bai

2020

Nanomaterials

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Heavy metals are inorganic pollutants which pose a serious threat to human and environmental safety, and their effective removal is becoming an increasingly urgent issue. Metal–organic frameworks (MOFs) are a novel group of crystalline porous materials, which have proven to be promising adsorbents because of their extremely high surface areas, optimizable pore volumes and pore size distributions. This study is a systematic review of the recent research on the removal of several major heavy metal ions by MOFs. Based on the different structures of MOFs, varying adsorption capacity can be achieved, ranging from tens to thousands of milligrams per gram. Many MOFs have shown a high selectivity for their target metal ions. The corresponding mechanisms involved in capturing metal ions are outlined and finally, the challenges and prospects for their practical application are discussed.

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“…high resistance to acid or base 46,47 . Recently, several MOFs have been investigated as arsenic sorbents, mostly concerning investigations of forms of ionic-As V sorption [48][49][50] . Only a few reports exist on the capture of As III by MOFs 40,[43][44][45] .…”

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confidence: 99%

A Hybrid {Silk@Zirconium MOF} Material as Highly Efficient AsIII-sponge

Georgiou

Rapti

Mavrogiorgou

et al. 2020

Sci Rep

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Exposure of humans to Arsenic from groundwater drinking sources is an acute global public health problem, entailing the urgent need for highly efficient/low-cost Arsenite (As iii) up-taking materials. Herein we present an innovative hybrid-material, ZrMOF@SF d operating like an "As iii-sponge" with unprecedented efficiency of 1800 mg As iii gr −1. ZrMof@SF d consists of a neutral Zirconium Metal-Organic Framework [ZrMOF] covalently grafted on a natural silk-fiber (SF d). ZrMOF itself exhibits As iii adsorption of 2200 mg gr −1 , which supersedes any-so far-known As ΙΙΙ-sorbent. Using XPS, FTIR, BETporosimetry data, together with theoretical Surface-Complexation-Modeling (SCM), we show that the high-As ΙΙΙ-uptake is due to a sequence of two phenomena:[i] at low As iii-concentrations, surfacecomplexation of H 3 Aso 3 results in As iii-coated voids of ZrMOF, [ii] at increased As iii-concentrations, the As iii-coated voids of ZrMOF are filled-up by H 3 Aso 3 via a partitioning-like mechanism. in a more general context, the present research exemplifies a mind-changing concept, i.e. that a "partitioning-like" mechanism can be operating for adsorption of metalloids, such as H 3 Aso 3, by metal oxide materials. So far, such a mechanism has been conceptualized only for the uptake of non-polar organics by natural organic matter or synthetic polymers. Arsenic exposure through drinking water sourced from groundwater, is a global public health problem that is particularly devastating in certain highly populated countries 1,2. According to a 2000 to 2010 case study, 35 to 77 million people in areas of Bangladesh or India have been chronically exposed to arsenic in their drinking water in what described as the most significant mass poisoning in history 3. Arsenic is a naturally occurring metalloid, also released to the environment via anthropogenic activities. Arsenic strongly binds to proteins, so traces of this element can cause severe health problems to all life forms 4. The predominant forms of arsenic in the aquatic environment are As III (arsenite) and As V (arsenate). As III is more hazardous than As V , as it is more mobile/bioavailable, thus more toxic 5. This toxicity is due to its dominant H 3 AsO 3 form, i.e. the predominating species in a wide range of pH < 9 6 , typically encountered in natural waters. So far, traditional ion-exchange materials and sorbents, e.g. zeolites, clays, layered double hydroxides, resins have been used as arsenic adsorbends, however, with limited efficiency vs. As III 7,8. Given that As V , which exists as anion at pH > 2, is easier to adsorb on cationic surfaces, to overcome the low efficiency of As III uptake, an extra step of oxidation of As III to As V can be chosen before the application of various remediation technologies. Such oxidative pretreatment, however, suffers from the presence of multiple substances that interfere with As III oxidation 9,10. Therefore, it will be desirable to develop sorbents that could directly capture As III in natural pH conditions, without the need for ...

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CoFe2O4@MIL-100(Fe) hybrid magnetic nanoparticles exhibit fast and selective adsorption of arsenic with high adsorption capacity

Cited by 87 publications

References 58 publications

Expanding the Horizon of Multicomponent Oxidative Coupling Reaction via the Design of a Unique, 3D Copper Isophthalate MOF-Based Catalyst Decorated with Mixed Spinel CoFe₂O₄ Nanoparticles

Expanding the Horizon of Multicomponent Oxidative Coupling Reaction via the Design of a Unique, 3D Copper Isophthalate MOF-Based Catalyst Decorated with Mixed Spinel CoFe₂O₄ Nanoparticles

Recent Progress in Heavy Metal Ion Decontamination Based on Metal–Organic Frameworks

A Hybrid {Silk@Zirconium MOF} Material as Highly Efficient AsIII-sponge

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CoFe2O4@MIL-100(Fe) hybrid magnetic nanoparticles exhibit fast and selective adsorption of arsenic with high adsorption capacity

Cited by 87 publications

References 58 publications

Expanding the Horizon of Multicomponent Oxidative Coupling Reaction via the Design of a Unique, 3D Copper Isophthalate MOF-Based Catalyst Decorated with Mixed Spinel CoFe2O4 Nanoparticles

Expanding the Horizon of Multicomponent Oxidative Coupling Reaction via the Design of a Unique, 3D Copper Isophthalate MOF-Based Catalyst Decorated with Mixed Spinel CoFe2O4 Nanoparticles

Recent Progress in Heavy Metal Ion Decontamination Based on Metal–Organic Frameworks

A Hybrid {Silk@Zirconium MOF} Material as Highly Efficient AsIII-sponge

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Product

Resources

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Expanding the Horizon of Multicomponent Oxidative Coupling Reaction via the Design of a Unique, 3D Copper Isophthalate MOF-Based Catalyst Decorated with Mixed Spinel CoFe₂O₄ Nanoparticles

Expanding the Horizon of Multicomponent Oxidative Coupling Reaction via the Design of a Unique, 3D Copper Isophthalate MOF-Based Catalyst Decorated with Mixed Spinel CoFe₂O₄ Nanoparticles