Magnetic nanoparticles-embedded nitrogen-doped carbon nanotube/porous carbon hybrid derived from a metal-organic framework as a highly efficient adsorbent for selective removal of Pb(II) ions from aqueous solution

Jafari, Ziaeddin; Avargani, Vahid Madadi; Rahimi, Mahmood Reza; Mosleh, Soleiman

doi:10.1016/j.molliq.2020.113987

Cited by 31 publications

(9 citation statements)

References 55 publications

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“…Among the mature techniques [e.g., chemical precipitation (Matlock and Howerton, 2002), ion exchange (Alyüz and Veli, 2009), adsorption (Yang et al, 2011), and membrane filtration (Liu et al, 2020)], adsorption is an appealing treatment option because of its high efficiency and low energy (Li et al, 2019b). Great efforts have been devoted to exploring high-efficient adsorbent materials such as bimetallic oxide (Wen et al, 2018) and porous carbon (Jafari et al, 2020). In recent years, framework-based materials with abundant porous structures and functional surface groups have gained great concerns and considered to be burgeoning adsorbents (Li et al, 2018;Duan et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II)

Liu

Shen

et al. 2021

Front. Chem. Eng.

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Two-dimensional (2D) metal–organic frameworks (MOFs) have emerged as intriguing 2D materials because of their specific features of 2D morphology and designable skeletons, which have elicited great interest in environment remediation. In this work, 2D MOF nanosheets are fabricated via a mixed-solvent solvothermal method, and a regulation strategy of metal inorganic clusters on MOFs is used to construct two different 2D MOFs with monometallic and bimetallic coordination, that is, Ni-MOF and Ni/Cd-MOF. Binary metal coordination renders more crystal defects and vacancies in the framework; thus, compared to monometallic Ni-MOF, bimetallic Ni/Cd-MOF exhibits fewer layers (4∼5 layers), higher specific surface area, larger pore size, and higher surface electronegativity, which leads to its excellent adsorption removal for Pb2+, with higher adsorption rate and affinity, and superior adsorption capacity (950.61 mg/g, almost twice as high as that of monometallic Ni-MOF). Besides, the adsorption mechanism further confirmed that the carboxyl groups (−COO−) from organic linker on 2D MOFs serve as the main binding sites for Pb2+ coordination, and bimetallic Ni/Cd-MOF has more active −COO− sites for Pb2+ capture. Thus, the bimetallic Ni/Cd-MOF regulated by heterogeneous metal atoms shows promising application for highly efficient adsorption of heavy metal ions.

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Section: Introductionmentioning

confidence: 99%

Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II)

Liu

Shen

et al. 2021

Front. Chem. Eng.

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“…Magnetic nanoadsorbents are emerging as significantly effective functional materials with exceptional micropollutant sequestration capabilities and fast adsorption kinetics at the laboratory scale (Abdel Maksoud et al 2020 ; D’Cruz et al 2020 ; Hu et al 2020 ; Mittal et al 2020 ; Ahmad et al 2020a ; Wang et al 2020b , d ; Jafari et al 2020 ; Keykhaee et al 2020 ; Icten and Ozer 2021 ; Xin et al 2021 ). Magnetic nanoadsorbents are generally characterized with high specific surface areas (e.g., 1188 m 2 g –1 for magnetic coal-based activated carbon (Liu et al 2021 )), high pore volumes (Gupta et al 2017 ; Yeap et al 2017 ; Masunga et al 2019 ; Li et al 2020 ; Azam et al 2020 ; Pan et al 2021 ), robust structures (Lingamdinne et al 2019a), and extensively interconnected porous networks (Tan et al 2020 ; Fan et al 2021 ) which collectively promote ultrahigh adsorption capacities for micropollutants.…”

Section: Magnetic Nanoadsorbentsmentioning

confidence: 99%

Magnetic nanoadsorbents for micropollutant removal in real water treatment: a review

Mudhoo

Sillanpää

2021

Environ Chem Lett

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Pure water will become a golden resource in the context of the rising pollution, climate change and the recycling economy, calling for advanced purification methods such as the use of nanostructured adsorbents. However, coming up with an ideal nanoadsorbent for micropollutant removal is a real challenge because nanoadsorbents, which demonstrate very good performances at laboratory scale, do not necessarily have suitable properties in in full-scale water purification and wastewater treatment systems. Here, magnetic nanoadsorbents appear promising because they can be easily separated from the slurry phase into a denser sludge phase by applying a magnetic field. Yet, there are only few examples of large-scale use of magnetic adsorbents for water purification and wastewater treatment. Here, we review magnetic nanoadsorbents for the removal of micropollutants, and we explain the integration of magnetic separation in the existing treatment plants. We found that the use of magnetic nanoadsorbents is an effective option in water treatment, but lacks maturity in full-scale water treatment facilities. The concentrations of magnetic nanoadsorbents in final effluents can be controlled by using magnetic separation, thus minimizing the ecotoxicicological impact. Academia and the water industry should better collaborate to integrate magnetic separation in full-scale water purification and wastewater treatment plants.

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“…2 Measured using t-plot method. 3 Mesopore volume(From BJH model) = Totalpore volume-Micropore volume. peak is observed at a wavenumber of 1700 cm -1 , indicating that the free BDC acid molecules are completely removed from UAS MIL-53(Al) pores 17 .…”

Section: Figure 1 X-ray Diffractograph Of the Ultrasonic And The Conventional Synthesized Mil-53(al)mentioning

confidence: 99%

“…Lead can cause nervous disorders such as IQ decline. In addition, it causes anemia and further side effects such as autoimmunity 2 ,headache, insomnia, liver and kidney problems, gastrointestinal, and nervous system disorders, to name a few 3,4 . Therefore, Pb (II) decontamination of the contaminated water before being discharged into the water reservoir from industrial plants is of high significance.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Hierarchically Structured MIL-53(Al) With Superior Properties Using An Environmentally-Friendly Ultrasonic Method For Separating Lead Ions From Aqueous Solutions

Ahadi

Askari

Fouladitajar

et al. 2021

Preprint

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The present study aims to investigate novel ultrasonic synthesized MIL-53(Al) and its applications in adsorption. Both conventional and ultrasonic methods were used to synthesized Mil-53(Al). The ultrasonic-assisted synthesis procedure results in reducing synthesis time to 24 hours; however, Compared to that conventional method takes 3 days to create the framework. Applying ultrasonic waves also increases surface area to 50% more than the ones synthesized by the conventional method, as well as creating the hierarchical MIL-53(Al) structure (meso- and micro-) pores. To this end, XRD, FESEM, BET, and FTIR analyses were employed to identify and characterize MIL-53(Al). The unique structure and high MIL-53(Al) yield lead to effective adsorption among MOF and lead ions. The optimum conditions for removing lead were 6.0 pH, 20 mg/l concentration, 60.0 min contact time, 0.04g adsorbent dose, and 318k temperature with 97.63% removal of the lead ions. The experimental adsorption equilibrium and kinetic data fitted the Langmuir isotherm and pseudo-second-order kinetic models, respectively. Moreover, the use of ultrasonic synthesized MIL-53(Al), for the first time as a novel adsorbent in heavy metal removal, pointed to the great potential of this new environmentally-friendly adsorbent in removing lead ions from aqueous solutions.

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Magnetic nanoparticles-embedded nitrogen-doped carbon nanotube/porous carbon hybrid derived from a metal-organic framework as a highly efficient adsorbent for selective removal of Pb(II) ions from aqueous solution

Cited by 31 publications

References 55 publications

Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II)

Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II)

Magnetic nanoadsorbents for micropollutant removal in real water treatment: a review

Facile Synthesis of Hierarchically Structured MIL-53(Al) With Superior Properties Using An Environmentally-Friendly Ultrasonic Method For Separating Lead Ions From Aqueous Solutions

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