Zeolitic imidazolate frameworks and their derived materials for sequestration of radionuclides in the environment: A review

Miensah, Elvis Djam; Khan, Musaa Muhammad; Chen, Jiu Yu; Zhang, Xiao Mei; Wang, Peng; Zhang, Zong Xiang; Yan, Jiao; Liu, Ying; Yang, Yi

doi:10.1080/10643389.2019.1686946

Cited by 38 publications

(10 citation statements)

References 185 publications

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“…General increase of waste gas, water, and soil with the intensification of human activities has resulted in serious environmental problems, which in turn cause severe threats to humans . Among those, heavy metal pollution has raised widespread attention due to its bioaccumulation and nondegradability. , Chromium (Cr) is one typical heavy metal contaminant, which is widely present in the environment because it is extensively used in many industrial processes such as metallurgical industry, chemical industry, refractory, and cast iron .…”

Section: Introductionmentioning

confidence: 99%

Ni–Fe/Reduced Graphene Oxide Nanocomposites for Hexavalent Chromium Reduction in an Aqueous Environment

Kang

Gao

et al. 2022

ACS Omega

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We designed and synthesized a novel high efficiency Cr(VI) removal material using reduced graphene oxide (RGO) as a support with high specific surface area and a mixture of Fe and Ni nanoparticles (NPs) as a catalytic reducing agent. Such a design enables the composite particle to be integrated with three functions of adsorption, catalysis, and reduction, where RGO could enhance Cr(VI) adsorption, while Fe/Ni NPs increase the catalytic reducing efficiency. The application of a microchip mixer guaranteed a better mixing of GO and subsequent decoration of Fe and Ni NPs on RGO. Cr(VI) removal experiments with various materials are performed, and the results demonstrated that the Ni−Fe/RGO achieved an adsorption capacity of 150.45 mg/g at pH = 7 and 197.43 mg/g at pH = 5 for Cr(VI), which is higher than those of other reported materials at a pH of ∼7. To the best of our knowledge, this is the first example of Ni−Fe/RGO for efficient Cr(VI) removal by using the synergistic effects of increased adsorption, catalysis-assisted reduction, and enhanced mixing effect of a microchip mixer. This work also provides us with a simple and low-cost method for the fabrication of an effective Cr(VI) removal material.

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Section: Introductionmentioning

confidence: 99%

Ni–Fe/Reduced Graphene Oxide Nanocomposites for Hexavalent Chromium Reduction in an Aqueous Environment

Kang

Gao

et al. 2022

ACS Omega

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“…ZIFs have been widely used for the removal of radionuclides since the first publication by Sava 2011, 272 whereas few systematic reviews concerning the recent advances on the removal of ZIFs are still available. 31 3.4.1 UO 2 2+ . The effect of water chemistry (e.g., reaction time, initial concentration, and pH) on radionuclide sorption was elaborated by batch techniques, and then sorption mechanisms were demonstrated by spectroscopic techniques and theoretical calculations.…”

Section: Removal Of Radionuclidesmentioning

confidence: 99%

Section: Environmental Applicationmentioning

confidence: 99%

“…Although there are a myriad of studies on the adsorption of various environmental pollutants on ZIFs, only few reviews concerning the environmental application of ZIFs in recent years are available. [30][31][32][33][34][35][36][37] This review begins with the synthesis and properties of ZIFs in section 2, and then discusses in detail the removal of various environmental pollutants (e.g., noxious gases in section 3.1, organics in section 3.2, heavy metals in section 3.3 and radionuclides in section 3.4) on ZIF-based materials, including removal capacity, interaction mechanism, and performance evaluation (e.g., advantages and disadvantages). Finally, the current challenges as well as the opportunities for future research are presented briefly in section 4.…”

Section: Introductionmentioning

confidence: 99%

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Recent advances in the application of zeolitic imidazolate frameworks (ZIFs) in environmental remediation: a review

Zhang

Yue

Xiao

et al. 2022

Environ. Sci.: Nano

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“…Zeolitic Imidazolate Frameworks (ZIFs) belong to the Metal Organic Framework family but combine the classical zeolite properties of chemical and thermal stability with the rich topological diversity of MOFs. ZIFs possess similar structures to aluminosilicate zeolites, but with the additional advantageous characteristics MOFs (Miensah et al 2019). These make them suitable precursors for porous carbons as the favorable characteristics of the ZIFs are retained in the corresponding porous carbons.…”

Section: Introductionmentioning

confidence: 99%

Sonicated Zeolitic Imidazolate Frameork-8 derived Nitrogen-doped hierarchical nanoporous carbon for efficient capture and reversible storage of radioiodine

Miensah

Chen

et al. 2021

Preprint

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Iodine plays a significant role in industry and in chemical processes within living organisms. However, radioiodine exposure possess threats such as thyroid cancer to humans, when they are released into the environment when using nuclear technology and through nuclear accidents. Its capture and storage is critical to safeguard industrial applications while preventing environmental leakages. Herein we report efficient radioiodine capture using a hierarchical nitrogen-doped, large surface area, nanoporous carbon derived from ultrasonication of ZIF-8. The carbon exhibited high adsorption capacity of 434 wt% gravimetrically and 1418 mgg− 1 in cyclohexane solution with fast kinetics and high recoverability. We deduced the high adsorption capacity to be due to the large surface area with micro and mesopores, presence of hydroxyl groups acting as electron donors and the presence of nitrogen, which interacts strongly with the electron-deficient iodine (I2). Moreover, the process best fits the pseudo-second-order and Freundlich models with multilinearity observed with Webber-Morris model. Because of its comparatively lower cost, large surface area, facile preparation, good regeneration and fast kinetics, the as-prepared porous carbon shows exceptional promise as radioiodine adsorbent.

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Zeolitic imidazolate frameworks and their derived materials for sequestration of radionuclides in the environment: A review

Cited by 38 publications

References 185 publications

Ni–Fe/Reduced Graphene Oxide Nanocomposites for Hexavalent Chromium Reduction in an Aqueous Environment

Ni–Fe/Reduced Graphene Oxide Nanocomposites for Hexavalent Chromium Reduction in an Aqueous Environment

Recent advances in the application of zeolitic imidazolate frameworks (ZIFs) in environmental remediation: a review

Sonicated Zeolitic Imidazolate Frameork-8 derived Nitrogen-doped hierarchical nanoporous carbon for efficient capture and reversible storage of radioiodine

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