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[[Vol. 75]Exfoliation of Zeolites into Solution Produces Porous Monolayers_ WPI-MANA.pdf](https://mdr.nims.go.jp/filesets/92ea7b77-fef7-4ff3-81e7-5ed7486eec80/download)

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International Center for Materials Nanoarchitectonics (WPI-MANA)

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[[Research Highlights Vol.75] Exfoliation of Zeolites into Solution Produces Porous Monolayers](https://mdr.nims.go.jp/datasets/a5b44dcd-b63f-44cd-84ae-c8f34314da81)

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2022/03/31 16:04 Exfoliation of Zeolites into Solution Produces Porous Monolayers| MANAhttps://www.nims.go.jp/mana/research/highlights/vol75.html 1/2Previous  Index  NextResearch Highlights[Vol. 75]Exfoliation of Zeolites into Solution Produces Porous Monolayers14 Mar, 2022A pioneering study at WPI-MANA has resulted in the first direct exfoliation of zeolitesinto a liquid suspension of monolayers. This breakthrough provides proof of thepresence of monolayers, and could lead to their use in the creation of catalysts,nanodevices, drug delivery systems and other products with tailored properties.Some two-dimensional (2D) materials, such as graphene, exhibit a variety of unique propertiesthanks to their molecular thinness and large size, as well as their 2D anisotropy. Catalysts andelectrode materials that take advantage of nanosheets’ high surface area are a promising field, butthe 2D anisotropy prevents efficient transfer of ions and molecules within the materials. Therefore,2D materials with through-holes are attracting attention, but so far there have been few examplesof them.Zeolites are typical porous materials and some of them have a layered structure. So exfoliatingthem in a single 2D layer could result in nanosheets with a regular pore structure. Although therehave been reports of the synthesis of zeolite nanosheets in trace yields, large quantities of thesubstance have not been obtained at a usable level.A WPI-MANA group succeeded in synthesizing zeolite nanosheets (MWW and FER types) byexfoliating them into a single layer by greatly swelling the layered zeolite in a solution containingorganic ammonium ions.https://www.nims.go.jp/mana/research/highlights/vol74.htmlhttps://www.nims.go.jp/mana/research/highlights/index.htmlhttps://www.nims.go.jp/mana/research/highlights/vol76.html2022/03/31 16:04 Exfoliation of Zeolites into Solution Produces Porous Monolayers| MANAhttps://www.nims.go.jp/mana/research/highlights/vol75.html 2/2Dispersing the zeolites into liquids provides the most effective approach to their practicalexploitation to fabricate materials with particular activity and functionality. The suspended layerscan be deposited on supports or restacked into hierarchical structures alone or in combination withother 2D materials to produce solids with useful properties.The exfoliation and proof of the presence of monolayers in the colloids open new possibilities ofsynthesizing functional hybrid and hierarchically structured materials. The researchers also madepredictions about potential applications of zeolite monolayer colloids based on the anisotropicphysical properties of 2D materials.This research was conducted by Takayoshi Sasaki (MANA Principal Investigator, Group Leader, SoftChemistry Group, WPI-MANA, NIMS) and his collaborators.References“Exfoliated Ferrierite-Related Unilamellar Nanosheets in Solution and Their Use for Preparation ofMixed Zeolite Hierarchical Structures”Wieslaw J. Roth, Takayoshi Sasaki et al.Journal: Journal of the American Chemical Society 143, 29, 11052-11062 (15 July 2021)DOI : 10.1021/jacs.1c04081“Liquid dispersions of zeolite monolayers with high catalytic activity prepared by soft-chemicalexfoliation”Wieslaw J. Roth, Takayoshi Sasaki et al.Journal: Science Advances 6 (12), eaay8163 (20 March 2020)DOI : 10.1126/sciadv.aay8163（MANA E-BULLETIN）https://www.nims.go.jp/mana/ebulletin/AffiliationsInternational Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for MaterialsScience (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, JapanContact informationInternational Center for Materials Nanoarchitectonics(WPI-MANA)National Institute for Materials Science1-1 Namiki, Tsukuba, Ibaraki 305-0044 JapanPhone: +81-29-860-4710E-mail: mana-pr[AT]ml.nims.go.jphttps://samurai.nims.go.jp/profiles/sasaki_takayoshi?locale=enhttps://samurai.nims.go.jp/profiles/sasaki_takayoshi?locale=enhttps://doi.org/10.1021/jacs.1c04081https://samurai.nims.go.jp/profiles/sasaki_takayoshi?locale=enhttps://doi.org/10.1126/sciadv.aay8163https://www.nims.go.jp/mana/ebulletin/