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In the present study, two types of zeolite nanosheets with distinct porous structures with MWW topology (denoted mww) and ferrierite-related structure (denoted bifer) are deposited on a substrate through the solution process via electrostatic self-assembly. Alternate deposition of zeolite nanosheets with polycation under optimized conditions allows the layer-by-layer growth of their multilayer films with a stacking distance of 2-3 nm. Furthermore, various hierarchical structures defined at the unit-cell dimensions can be constructed simply by conducting the deposition of mww and bifer nanosheets in a designed sequence. Adsorption of a dye, Rhodamine B, in these films is examined to show that adsorption is dependent on constituent zeolite nanosheets and their assembled nanostructures. This work has provided fundamental advancements in the fabrication of artificial zeolite-related hierarchical structures, which may be extended to other zeolite nanosheets, broadening their functionalities, applications, and benefits.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: 2D materials, hierarchical structures, layer-by-layer assembly, open channels, unilamellar zeolite nanosheets

Date published: 2024-01-28

Publisher: Wiley

Journal:

• Small (ISSN: 16136810) vol. 20 issue. 27 2308293

Funding:

• Ministry of Education, Culture, Sports, Science and Technology
• Japan Science and Technology Agency JPMJCR17N1
• Japan Science and Technology Agency JPMJCR22B1
• Japan Society for the Promotion of Science P21036

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1002/smll.202308293

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Updated at: 2024-07-05 12:30:25 +0900

Published on MDR: 2024-07-05 12:30:26 +0900