Nanoscale zero-valent iron/magnetite carbon composites for highly efficient immobilization of U(VI)

Lv, Zhimin; Yang, Shimin; Chen, Lei; Alsaedi, Ahmed; Hayat, Tasawar; Chen, Changlun

doi:10.1016/j.jes.2018.06.001

Cited by 62 publications

(15 citation statements)

References 46 publications

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“…1(c), the N 2 adsorption/desorption isotherm of AIBC is of type IV with a type H2 hysteresis loop according the IUPAC classication. 8,21 The pore size distribution curve of AIBC indicates the presence of both micropores and mesopores with a diameter in the range of 5-60 nm. Yet, the formation of macropores is not excluded based on the shape of the hysteresis loop at high relative pressure (>0.9).…”

Section: Aging Experiments In Airmentioning

confidence: 99%

“…Biochar-supported nZVI has been widely synthesized using liquid phase reduction, but the method is costly, the reagent is toxic, and secondary pollution is generated. 8 Therefore, the development of an appropriate method to synthesis nZVI/biochar has become a hot topic. An effective approach to produce nZVI/biochar is one-step pyrolysis, in which FeCl 3 or Fe(NO 3 ) 3 is mixed with straw, 9 cellulose, 10 yellow pine 8 or sawdust 11 and then calcined under low-oxygen conditions.…”

Section: Introductionmentioning

confidence: 99%

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One-pot synthesis of spherical nanoscale zero-valent iron/biochar composites for efficient removal of Pb(ii)

Shi

Liu

et al. 2021

RSC Adv.

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Section: Aging Experiments In Airmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

One-pot synthesis of spherical nanoscale zero-valent iron/biochar composites for efficient removal of Pb(ii)

Shi

Liu

et al. 2021

RSC Adv.

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“…[24] Three diffraction peaks at 44.5°, 65°, and 82.5°were noticed over PEG-nZVI@MF sample, indicating the formation of zero valent iron over MF surface. [25] In addition, there was an obvious diffraction peak at 35°, which was attributed to Fe 3 O 4 and was inevitably produced in the atmosphere [26] .…”

Section: Characterization Of Peg-nzvi@mfmentioning

confidence: 99%

Preparation of Melamine Foam Supported Nanoscale Zero Valent Iron and Its Application for Removal of Cr(VI) from Aqueous Solution and Hydrogenation of p‐Nitrophenol

2021

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In this work, PEG-nZVI@MF composites were prepared by immobilizing nanoscale zero valent iron (nZVI) on melamine foam (MF) through the incorporation of polyethylene glycol (PEG). As a monolithic, low-cost, and efficient catalyst, PEG-nZVI@MF catalyst showed excellent performance in the removal of Cr(VI) from aqueous solution and catalytical hydrogenation of p-nitrophenol (p-NP). The hydrogenation of p-NP by sodium borohydride was completed within 3 min, and PEG-nZVI@MF catalyst showed excellent catalytic performance without sacrificing catalytic activity during four cycle reactions. In addition, 99 % of Cr(VI) ions in an aqueous solution were removed within 15 min. Importantly, the novel composite could be simply separated by a common external magnet. This synthesis strategy here provided a simple method to prepare air stable nZVI composites for environment remediation.

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“…Take carbon-supported nanoscale zero-valent iron composite, for example, the core material is nanoscale zero-valent iron (Li et al 2021 ). Although nanoscale zero-valent irons possess a strong ferromagnetic feature, their inherent disadvantage is prone to agglomeration (Lv et al 2019 ). To overcome this weakness, the carbon component is added to aid the better dispersion of the nanoscale zero-valent iron particles in the porous carbon matrix (Li et al 2020a , b , c , d ).…”

Section: Removal Of Chloramphenicolmentioning

confidence: 99%

Occurrence, toxicity and adsorptive removal of the chloramphenicol antibiotic in water: a review

Nguyen

et al. 2022

Environ Chem Lett

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Chloramphenicol is a broad-spectrum bacterial antibiotic used against conjunctivitis, meningitis, plague, cholera, and typhoid fever. As a consequence, chloramphenicol ends up polluting the aquatic environment, wastewater treatment plants, and hospital wastewaters, thus disrupting ecosystems and inducing microbial resistance. Here, we review the occurrence, toxicity, and removal of chloramphenicol with emphasis on adsorption techniques. We present the adsorption performance of adsorbents such as biochar, activated carbon, porous carbon, metal–organic framework, composites, zeolites, minerals, molecularly imprinted polymers, and multi-walled carbon nanotubes. The effect of dose, pH, temperature, initial concentration, and contact time is discussed. Adsorption is controlled by π–π interactions, donor–acceptor interactions, hydrogen bonding, and electrostatic interactions. We also discuss isotherms, kinetics, thermodynamic data, selection of eluents, desorption efficiency, and regeneration of adsorbents. Porous carbon-based adsorbents exhibit excellent adsorption capacities of 500–1240 mg g −1 . Most adsorbents can be reused over at least four cycles.

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Nanoscale zero-valent iron/magnetite carbon composites for highly efficient immobilization of U(VI)

Cited by 62 publications

References 46 publications

One-pot synthesis of spherical nanoscale zero-valent iron/biochar composites for efficient removal of Pb(ii)

One-pot synthesis of spherical nanoscale zero-valent iron/biochar composites for efficient removal of Pb(ii)

Preparation of Melamine Foam Supported Nanoscale Zero Valent Iron and Its Application for Removal of Cr(VI) from Aqueous Solution and Hydrogenation of p‐Nitrophenol

Occurrence, toxicity and adsorptive removal of the chloramphenicol antibiotic in water: a review

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