Di-lacunary [In6S15]12− cluster: the building block of a highly negatively charged framework for superior Sr2+ adsorption capacities

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Di-lacunary [In₆S₁₅]¹²⁻ cluster: the building block of a highly negatively charged framework for superior Sr²⁺ adsorption capacities†

Kai-Yao Wang,

*^a Meng Sun,

^a Dong Ding,

^a Hua-Wei Liu,

^a Lin Cheng

^b and Cheng Wang

Author affiliations

* Corresponding authors

^a Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
E-mail: kaiyao0729@163.com

^b College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China

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 q_m 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.

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Article information

DOI: https://doi.org/10.1039/D0CC00441C
Article type: Communication
Submitted: 16 Jan 2020
Accepted: 13 Feb 2020
First published: 14 Feb 2020

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Chem. Commun., 2020,56, 3409-3412

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Di-lacunary [In₆S₁₅]¹²⁻ cluster: the building block of a highly negatively charged framework for superior Sr²⁺ adsorption capacities

K. Wang, M. Sun, D. Ding, H. Liu, L. Cheng and C. Wang, Chem. Commun., 2020, 56, 3409 DOI: 10.1039/D0CC00441C

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