Current State and Perspectives of Exfoliated Zeolites
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Published:2023-11-28
Issue:4
Volume:36
Page:
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ISSN:0935-9648
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Container-title:Advanced Materials
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language:en
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Short-container-title:Advanced Materials
Author:
Roth Wieslaw J.1,
Opanasenko Maksym2,
Mazur Michal2,
Gil Barbara1,
Čejka Jiří2ORCID,
Sasaki Takayoshi3
Affiliation:
1. Faculty of Chemistry Jagiellonian University Gronostajowa 2 Kraków 30‐387 Poland
2. Department of Physical and Macromolecular Chemistry Faculty of Science Charles University Hlavova 8 Prague 2 12843 Czech Republic
3. Research Center for Materials Nanoarchitectonics (WPI‐MANA) National Institute for Materials Science (NIMS) 1‐1 Namiki Tsukuba Ibaraki 305‐0044 Japan
Abstract
AbstractZeolites are highly efficient industrial catalysts and sorbents with microporous framework structures. Approximately 10% of the frameworks, but eventually all in the long run, have produced both 3D crystals and 2D layers. The latter can be intercalated and expanded like all 2D materials but proved difficult to exfoliate directly into suspensions of monolayers in solution as precursors for unique synthetic opportunities. Successful exfoliations have been reported recently and are overviewed in this perspective article. The discussion highlights 3 primary challenges in this field, namely finding suitable 2D zeolite preparations that exfoliate directly in high yield, proving uniform layer thickness in solution and identifying applications to exploit the unique synthetic capabilities and properties of exfoliated zeolite monolayers. Four zeolites have been confirmed to exfoliate directly into monolayers: 3 with known structures—MWW, MFI, and RWR and one unknown, bifer with a unit cell close to ferrierite. The exfoliation into monolayers is confirmed by the combination of 5–6 characterization techniques including AFM, in situ and in‐plane XRD, and microscopies. The promising areas of development are oriented films and membranes, intimately mixed zeolite phases, and hierarchical nanoscale composites with other active species like nanoparticles and clusters that are unfeasible by solid state processes.
Funder
Japan Science and Technology Agency
Japan Society for the Promotion of Science
Ministerstvo Školství, Mládeže a Tělovýchovy
Grantová Agentura České Republiky
Narodowe Centrum Nauki
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science