Removal of Sr<sup>2+</sup> Ions by a High-Capacity Indium Sulfide Exchanger Containing Permeable Layers with Large Pores

Sun, Mengtao; Wang, Kai‐Yao; Ding, Dong; Zhu, Jiaying; Zhao, Yi‐Ming; Cheng, Lin; Wang, Cheng

doi:10.1021/acs.inorgchem.0c02113

Cited by 18 publications

(24 citation statements)

References 21 publications

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“…16 ). Conversely, excellent sulfide-based ion-exchange materials such as KMS-2 18 , KTS-3 19 , FJSM-GAS-1 47 , FJSM-GAS-2 47 , InS-1 48 , InS-2 49 , and K@GaSnS-1 50 have the disrupted frameworks at pH = 2–3. Although KMS-1 22 and FJSM-SnS 46 are more acid-resistant, their frameworks could only remain stable at pH of around 0.7.…”

Section: Resultsmentioning

confidence: 99%

Highly selective cesium(I) capture under acidic conditions by a layered sulfide

Tang

Jin

et al. 2022

Nat Commun

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Radiocesium remediation is desirable for ecological protection, human health and sustainable development of nuclear energy. Effective capture of Cs+ from acidic solutions is still challenging, mainly due to the low stability of the adsorbing materials and the competitive adsorption of protons. Herein, the rapid and highly selective capture of Cs+ from strongly acidic solutions is achieved by a robust K+-directed layered metal sulfide KInSnS4 (InSnS-1) that exhibits excellent acid and radiation resistance. InSnS-1 possesses high adsorption capacity for Cs+ and can serve as the stationary phase in ion exchange columns to effectively remove Cs+ from neutral and acidic solutions. The adsorption of Cs+ and H3O+ is monitored by single-crystal structure analysis, and thus the underlying mechanism of selective Cs+ capture from acidic solutions is elucidated at the molecular level.

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Section: Resultsmentioning

confidence: 99%

Highly selective cesium(I) capture under acidic conditions by a layered sulfide

Tang

Jin

et al. 2022

Nat Commun

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“…KMS-1 (226 mg g -1 for Cs + ; 77 mg g -1 for Sr 2+ ), [29,30] KMS-2 (531.7 mg g -1 for Cs + ; 86.89 mg g -1 for Sr 2+ ), [31] KTS-3 (280 mg g -1 for Cs + ; 102 mg g -1 for Sr 2+ ), [32] FJSM-SnS (408.91 mg g -1 for Cs + ; 65.19 mg g -1 for Sr 2+ ), [33] and InS-2 (143.29 mg g -1 for Sr 2+ ) (Table S8, Supporting Information). [46] They are about 99.03% and 57.60% of the theoretical adsorption capacities (321.90 mg g -1 for Cs + , 106.11 mg g -1 for Sr 2+ ) of SbS-1K. The relative low percentage for Sr 2+ may be ascribed to the nonequimolar exchange with K + and/or insufficient interchain space for the accommodation of a full stoichiometric number of large hydrated Sr 2+ ions.…”

Section: Kinetic Isothermal and Elution Studiesmentioning

confidence: 93%

“…Very recently, the alkylammonium-directed metal selenide AgSnSe-1 [40] was emplored for extracting Cs + from Sr 2+ , with an excellent separtion factor SF Cs/Sr large than 120. Conversely, selective ion exchange for Sr 2+ against Cs + has also been achieved by inorganic materials such as MOFs (e.g., SZ-4, [21] MOF-808-SO 4 , [41] and MOF-808-C 2 O 4 [41] ) and metal sulfides (e.g., ZnSnS [42][43][44] and InS [45][46][47] series) as a result of collaborative coordination by the host network and/or particular ion-trapping interactions. In short, increasing efforts have been put on developing high-performance single-functional ion exchangers as either coadsorbent or separator for mixed Cs + and Sr 2+ in aqueous solutions.…”

Section: Introductionmentioning

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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“…Metal chalcogenide supertetrahedral T n clusters with atomically defined structures span the size gap between isolated molecular species and semiconductor nanoparticles. − They can exist in the form of discrete clusters whose dispersibility in solvents bears great importance for their solution processable applications in electrocatalysis, , photocatalysis, − photoluminescence, − and so on. In addition, these clusters can also spontaneously coassemble into extended frameworks with specific applications in solid electrolyte, solar energy conversion, ion exchange, − and so on. Generally, the complex fabrication of the solid is dominated by a structure-directing mechanism. , The structure-directing agents (SDAs) with specific size and geometry occupy the space between the clusters and interact with the clusters through electrostatic interactions, van der Waals forces, and hydrogen bonds to form a relatively stable assembly system.…”

Section: Introductionmentioning

confidence: 99%

Mixed Solvothermal Synthesis of Tn Cluster-Based Indium and Gallium Sulfides Using Versatile Ammonia or Amine Structure-Directing Agents

et al. 2021

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Metal chalcogenide supertetrahedral Tn clusters are of current interest for their unique compositions and structures, which rely highly on the structure-directing agents. Herein, we report four novel Tn cluster-based indium and gallium sulfides, namely, [NH(CH 3 ) 3 ] 4 In 4 S 10 H 4 (1), (NH 3 ) 4 Ga 4 S 6 (2), [NH 3 CH 2 CH 3 ] 5 (NH 2 CH 2 CH 3 ) 2 Ga 11 S 19 (3), and [NH 3 CH 2 -CH 2 OH] 6 Ga 10 S 18 •2NH 2 CH 2 CH 2 OH ( 4). All four compounds were solvothermally synthesized in mixed amine−ethanol solutions or deep eutectic solvent (DES), where ammonia/amine molecules play significant structure-directing roles in the speciation and crystal growth. (1) Being protonated, the trimethylamine and ethanolamine molecules surround the T2-[In 4 S 10 H 4 ] 4− clusters (for 1) and [Ga 10 S 18 ] n 6n− open framework (for 4), respectively, compensating for the negative charge of the inorganic moieties. (2) With the lone pair of electrons, the ammonia molecules in 2 coordinate directly to corner Ga 3+ ions of the {Ga 4 S 6 } cage to give a neutral T2-(NH 3 ) 4 Ga 4 S 6 cluster. (3) For compound 3, part of the ethylamine molecules act as terminating ligands for the T1 and T3 units in the [Ga 11 S 19 (NH 2 CH 2 CH 3 ) 2 ] n 5n− layer, while the rest act as interlamellar countercations upon protonation. Theoretical studies reveal the contributions of N, C, and H to the density of states (DOS) for 2 and 3 because of their hybrid structures that combine the ammonia/amine ligands with sulfide moieties together.

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Removal of Sr²⁺ Ions by a High-Capacity Indium Sulfide Exchanger Containing Permeable Layers with Large Pores

Cited by 18 publications

References 21 publications

Highly selective cesium(I) capture under acidic conditions by a layered sulfide

Highly selective cesium(I) capture under acidic conditions by a layered sulfide

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

Mixed Solvothermal Synthesis of Tn Cluster-Based Indium and Gallium Sulfides Using Versatile Ammonia or Amine Structure-Directing Agents

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Removal of Sr2+ Ions by a High-Capacity Indium Sulfide Exchanger Containing Permeable Layers with Large Pores

Cited by 18 publications

References 21 publications

Highly selective cesium(I) capture under acidic conditions by a layered sulfide

Highly selective cesium(I) capture under acidic conditions by a layered sulfide

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

Mixed Solvothermal Synthesis of Tn Cluster-Based Indium and Gallium Sulfides Using Versatile Ammonia or Amine Structure-Directing Agents

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Product

Resources

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Removal of Sr²⁺ Ions by a High-Capacity Indium Sulfide Exchanger Containing Permeable Layers with Large Pores

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