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Li C, Yuan Y, Li P, Yang K, Ren Q, Nie A, Liu S, Lazar S, Meingast A, Wang S. Atomic Mechanisms of Cation Adsorption/Exchange in Octahedral Molecular Sieves. ACS NANO 2022; 16:21618-21625. [PMID: 36521057 DOI: 10.1021/acsnano.2c10682] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Octahedral molecular sieves (OMSs) based on MnO2 have been widely studied in the fields of deionization, geochemistry, and energy storage due to their microporous tunnel framework capable of adsorbing and exchanging various ions, particularly cations. The understanding of cation adsorption/exchange within OMS tunnels demands atomic-scale exploration, which has been scarcely reported. Here, we disclose how various cations (K+/Ag+/Na+) interplay within the OMS tunnel space on an atomic scale. Not only are the lattice sites for each adsorbed cation species pinpointed but the scenario of dual-cation adsorption within single tunnels is also demonstrated, together with the discovery of characteristic concentration-dependent cation ordering. Moreover, compared with the theoretical parent tunnel phase, the heterogeneous tunnels, though sparsely distributed, exhibit a distinct yet orderly cationic accommodation, highlighting the non-negligible role of tunnel heterogeneity in regulating OMS physiochemistry. Our findings clarify the long-existing ambiguities in nano- and atomic-scale science of the ion adsorption process in OMS materials and are expected to inspire their structural/compositional engineering toward functionality enhancement in various fields.
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Affiliation(s)
- Chenghang Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, People's Republic of China
| | - Yifei Yuan
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, People's Republic of China
| | - Penghui Li
- Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Keqin Yang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, People's Republic of China
| | - Qingqing Ren
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, People's Republic of China
| | - Anmin Nie
- Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Suya Liu
- Thermo Fisher Scientific, Jinke Road No. 2517, Shanghai 201206, People's Republic of China
| | - Sorin Lazar
- Thermo Fisher Scientific, Achtseweg Noord 5, 5156 Eindhoven, The Netherlands
| | - Arno Meingast
- Thermo Fisher Scientific, Achtseweg Noord 5, 5156 Eindhoven, The Netherlands
| | - Shun Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, People's Republic of China
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Wang W, Bi X, Chai T, Zhao P, Yang J, Meng X. Adsorption of Rutin from Aqueous Solution over an OMS‐2‐Modified ZrO
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Nanocomposite. ChemistrySelect 2022. [DOI: 10.1002/slct.202200902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Weifeng Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Xiuru Bi
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China
| | - Tian Chai
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Peiqing Zhao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China
| | - Jun‐Li Yang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Xu Meng
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China
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Bi X, Huang Y, Liu X, Yao N, Zhao P, Meng X, Astruc D. Oxidative degradation of aqueous organic contaminants over shape-tunable MnO2 nanomaterials via peroxymonosulfate activation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119141] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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