Highly efficient removal of radioactive 90Sr based on sulfonic acid-functionalized α-zirconium phosphate nanosheets

Mu, Wanjun; Du, Shenzhen; Yu, Qianhong; Li, Xingliang; Wei, Hongyuan; Yang, Yong; Peng, Shuming

doi:10.1016/j.cej.2018.12.110

Cited by 43 publications

(10 citation statements)

References 52 publications

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“…Ion exchange has emerged as a promising approach for the radionuclide extration owing to the easy operation and high efficiency, and great progress has been made on the Cs + and/or Sr 2+ adsorption studies on zeolites, [13,14] clays, [15] phosphates, [16,17] titanate, [6,18] ferric oxide, [19] graphene oxide, [20] metalorganic frameworks (MOFs), [21,22] metal chalcogenides, [23,24] etc. Depending on the elimination and recovery purposes for mixed Cs + and Sr 2+ , two distinct functions−coadsorption and separation−would be considered as two primary requirements for the development of ion exchangers.…”

mentioning

confidence: 99%

pH‐Controlled Switch over Coadsorption and Separation for Mixed Cs⁺ and Sr²⁺ by an Acid‐Resistant Potassium Thioantimonate

Zhao

Cheng

Wang

et al. 2022

Adv Funct Materials

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Switchable coadsorption and separation for elimination/partitioning of Cs + and Sr 2+ is achieved by pH-controlled ion exchange using a potassium thioantimonate K 2 Sb 4 S 7 •2H 2 O (SbS-1K) with fantastic pH durability from diluted NaOH (pH 12) to concentrated HCl (3 m). At pH 6, SbS-1K exhibits ultrafast adsorption kinetics (R ≈ 90% in 2 min for Cs + and 20 min for Sr 2+ ) and high removal rates (R ≈ 98-99%) at equilibrium for both Cs + and Sr 2+ . At pH 2, the Sr 2+ adsorption is inhibited by H + with a great loss in R Sr to 11.18%, whereas the R Cs remains at 96.99%, contributing to a top-ranked separation factor SF Cs/Sr of 256. The SbS-1K-filled ion exchange column can be switched between the eliminating (R Cs > 99.91%; R Sr > 98.19%) and separating (R Cs > 98.99%; R Sr ≈ 0±3%) modes for treating continuous flow with a variation from pH 6 to pH 2 or vice versa. The SbS-1K/PTFE membrane exhibits coadsorption and separation effects for filtration of low concentrated mixed Cs + and Sr 2+ solution (1 ppm for each), even at an ultrafast vacuum filtration speed (30 mL min -1 ). Combined with easy synthesis and high β/γ irradiation resistance, SbS-1K represents a new-concept bifunctional exchanger with discriminating intelligence for equipment innovation.

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confidence: 99%

pH‐Controlled Switch over Coadsorption and Separation for Mixed Cs⁺ and Sr²⁺ by an Acid‐Resistant Potassium Thioantimonate

Zhao

Cheng

Wang

et al. 2022

Adv Funct Materials

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“…To compare the XPS of potassium ions of K 2 [(AlF 5 )H 2 O] and K 2 [(AlF 5 )H 2 O]−Sr (Figure 6b), the characteristic peaks of K 2p at 294 eV and K 2 s at 359 eV are significantly weakened after Sr 2+ adsorption (Figure 6c). [63,64] In K 2 [(AlF 5 )H 2 O]−Sr, Sr only has one wide peak because the characteristic peaks of Sr 3d 5/2 (~133 eV), Sr 3d 3/2 (~135 eV) are very close to each other (Figure 6d). [65] By comparing the XPS spectra of aluminum and fluorine ions in K 2 [(AlF 5 )H 2 O] and K 2 [(AlF 5 )H 2 O]−Sr, a noticeable shift was observed in the characteristic peak of Al 2p from 74.2 eV to 78.9 eV, as well as in the characteristic peak of F 1s from 685.8 eV to 689.3 eV following the exchange process (Figure 6e and 6f).…”

Section: Resultsmentioning

confidence: 99%

First Potassium Fluoroaluminate Ionic Exchanger for Rapid and Selective Removal of Sr²⁺ with High Capacity

Hao,

Chen,

Cao

et al. 2024

Chemistry A European J

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90Sr, as a typical artificial radionuclide, poses a serious threat to human health and the ecological environment. The selective removal of this radionuclide from industrial nuclear waste is very necessary for our environment. Here we report a novel potassium fluoroaluminate, K2[(AlF5)H2O], which was synthesized by a simple low‐temperature one‐step method. It adopts a 1D AlF6‐chain structure, which consists of exchangeable potassium ions in between the infinite chains of octahedral Al centers. As a remarkable inorganic ionic exchanger, K2[(AlF5)H2O] has a high chemical stability (resistance of pH= ~3‐12) and thermal stability. It possesses an excellent adsorption selectivity (Kd=~6.1×104 mL·g−1) and a maximum adsorption capacity of qm= ~120.32 mg·g−1 for Sr2+. Importantly, it still keep a very good selectivity for Sr2+ ions even in the presence of competing Na+, Mg2+ and Ca2+ aqueous solutions. K2[(AlF5)H2O] is the first example of fluoroaluminate ionic exchange materials that can capture Sr2+. This result opens up a new way to design and synthesize inorganic ionic exchangers for the selective removal of Sr2+ ions from radioactive waste water.

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“…This was achieved by exfoliating ZrP in the presence of TBAOH followed by surface functionalization with (SO 3 H) groups. 264 The ZrP-SO 3 H material exhibits a promising adsorption selectivity for Sr 2+ ions with a q m value of 183.21 mg g −1 . Higher adsorption affinity arises mainly due to surface abundant SO 3 H groups, in addition to a high specific surface area.…”

Section: Ion Exchange and Sorption Of Metal Ionsmentioning

confidence: 99%

“…The same research group in 2019, modified the surface of α-ZrP with sulfonic acid (SO 3 H) groups. This was achieved by exfoliating ZrP in the presence of TBAOH followed by surface functionalization with (SO 3 H) groups . The ZrP-SO 3 H material exhibits a promising adsorption selectivity for Sr 2+ ions with a q m value of 183.21 mg g –1 .…”

Section: Ion Exchange and Sorption Of Metal Ionsmentioning

confidence: 99%

Revisiting the Old and Golden Inorganic Material, Zirconium Phosphate: Synthesis, Intercalation, Surface Functionalization, and Metal Ion Uptake

Bashir

Ahad

Malik

et al. 2020

Ind. Eng. Chem. Res.

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As a fascinating two-dimensional (2D) layered inorganic ion exchange material, zirconium phosphate (hereafter ZrP) has drawn interdisciplinary attention as an ion exchange material and a competent host for surface functionalization and intercalation. This is due to its captivating properties such as simple synthesis procedure, excellent ion-exchange capacity, excellent chemical, thermal, and radiolytic stability, tunable interlayer gallery, and good biocompatibility. Among all the well-known phases of ZrP, we restrict our discussion only to the alpha (α-ZrP) and gamma (γ-ZrP) phases for their efficient ion exchange performance and more tunable interlayer spacing. This review summarizes a panorama of the recent research progress on the synthesis, intercalation, and surface functionalization of ZrP with organic molecules, metal complexes, and metal ions for the design and fabrication of self-assembled monolayers, layer-by-layer assemblies, and nanocomposites. Within the confined gallery microenvironment of ZrP, usual molecules behave unusually with dramatic enhancement in the photophysical properties. The intercalation of metal complexes and their fascinating electronic properties will also be comprehensively highlighted in this review. Furthermore, for the first time, a cutting-edge advancement (2010 onward) of the versatile adsorption performance of ZrP-based materials for the uptake of toxic metal ions which include nuclear waste-related metal ions, heavy metal ions, and rare earth ions will be presented in detail. Last but not least, the review will conclude with the summary and future directions, which will provide new research opportunities for the development of ZrP based sustainable heterofunctional material.

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Highly efficient removal of radioactive 90Sr based on sulfonic acid-functionalized α-zirconium phosphate nanosheets

Cited by 43 publications

References 52 publications

pH‐Controlled Switch over Coadsorption and Separation for Mixed Cs⁺ and Sr²⁺ by an Acid‐Resistant Potassium Thioantimonate

pH‐Controlled Switch over Coadsorption and Separation for Mixed Cs⁺ and Sr²⁺ by an Acid‐Resistant Potassium Thioantimonate

First Potassium Fluoroaluminate Ionic Exchanger for Rapid and Selective Removal of Sr²⁺ with High Capacity

Revisiting the Old and Golden Inorganic Material, Zirconium Phosphate: Synthesis, Intercalation, Surface Functionalization, and Metal Ion Uptake

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Highly efficient removal of radioactive 90Sr based on sulfonic acid-functionalized α-zirconium phosphate nanosheets

Cited by 43 publications

References 52 publications

pH‐Controlled Switch over Coadsorption and Separation for Mixed Cs+ and Sr2+ by an Acid‐Resistant Potassium Thioantimonate

pH‐Controlled Switch over Coadsorption and Separation for Mixed Cs+ and Sr2+ by an Acid‐Resistant Potassium Thioantimonate

First Potassium Fluoroaluminate Ionic Exchanger for Rapid and Selective Removal of Sr2+ with High Capacity

Revisiting the Old and Golden Inorganic Material, Zirconium Phosphate: Synthesis, Intercalation, Surface Functionalization, and Metal Ion Uptake

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Product

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pH‐Controlled Switch over Coadsorption and Separation for Mixed Cs⁺ and Sr²⁺ by an Acid‐Resistant Potassium Thioantimonate

pH‐Controlled Switch over Coadsorption and Separation for Mixed Cs⁺ and Sr²⁺ by an Acid‐Resistant Potassium Thioantimonate

First Potassium Fluoroaluminate Ionic Exchanger for Rapid and Selective Removal of Sr²⁺ with High Capacity