Organotin-Oxo Clusters with Enhanced π-Conjugation for Iodine Capture
The sustainable development of nuclear energy raises significant challenges in handling radioactive iodine (I<sub>2</sub>). Tin-oxo clusters are multimetal aggregates composed of Sn-oxide motifs and surface ligands. Sn<sup>2/4+</sup> ions have a strong affinity for iodine, making tin-oxo clusters promising candidates for trapping I<sub>2</sub>. In this work, we constructed two BINOL (=1,1'-binaphthol)-based organotin-oxo clusters with bowl-shaped structures and used them in iodine absorption study. The BINOL-based organotin-oxo clusters demonstrated remarkable performance in an I<sub>2</sub> vapor adsorption experiment, with Sn<sub>6</sub>L<sub>4</sub> achieving an adsorption capacity of 1.36 g·g<sup>-1</sup> at 80 °C. Combining experimental characterizations and theoretical calculations, we found that the BINOL-based organotin-oxo clusters interact with iodine through charge transfer interactions and Sn-I bondings. Additionally, the introduction of a butyl group enhances the adsorption capacity by facilitating C-H-I interactions. The research paves the way for the development of tin-oxo cluster-based iodine adsorbents.
Authors
- Qipu Lin (ORCID: https://orcid.org/0000-0002-7723-3676)
- Er‐Xia Chen
- Jian Zhang (ORCID: https://orcid.org/0000-0003-3373-9621)
- Gui‐Xin Yan
- Jin‐Xia Yang (ORCID: https://orcid.org/0000-0002-3796-1513)
Institutions
- Chinese Academy of Sciences (CN)
- Fujian Institute of Research on the Structure of Matter (CN)
- University of Chinese Academy of Sciences (CN)
- Fuzhou University (CN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-04-02
- DOI
- https://doi.org/10.1021/acs.inorgchem.4c05502
- Citations
- 5
- Primary Topic
- Radioactive element chemistry and processing
- Type
- article
- Field-Weighted Citation Impact
- 2.69
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Fujian Province
- National Key Research and Development Program of China