Di-lacunary [In<sub>6</sub>S<sub>15</sub>]<sup>12−</sup> cluster: the building block of a highly negatively charged framework for superior Sr<sup>2+</sup> adsorption capacities
Kai‐Yao Wang, Meng Sun, Dong Ding, Huawei Liu, Lin Cheng, Cheng Wang
Abstract
In this study, the construction of a highly negatively charged layered material [CH3CH2NH3]6In6S12 (InS-1) by introducing a lacunary cluster as the building block is reported. The pronounced framework negative charge density (5.59 × 10-3) and the soft Lewis basic S component endow InS-1 with an effective ion exchange performance toward heavier Sr2+, with a top-level adsorption capacity qm of 105.35 mg g-1. InS-1 exhibits a good exchange activity over pH 3-12, and the Sr2+-laden product can be facilely eluted.
Topics & Concepts
Lacunary functionBlock (permutation group theory)Cluster (spacecraft)AdsorptionChemistryCrystallographyPhysicsPhysical chemistryMaterials scienceCombinatoricsMathematicsDiscrete mathematicsComputer scienceProgramming languageChemical Synthesis and CharacterizationCrystal Structures and PropertiesMetal-Organic Frameworks: Synthesis and Applications