From 2D kaolinite to 3D amorphous cement
Abstract Kaolinite is a single 2D layer of kaolin or metakaolin (MK), common clays that can be characterized as layered 3D materials. We show that because of its chemical composition, kaolinite can be converted into an amorphous 3D material by chemical means. This dimensional transformation is possi...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-81882-1 |
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| author | Juan A. G. Carrio Ricardo K. Donato Alexandra Carvalho Gavin K. W. Koon Katarzyna Z. Donato Xin Hui Yau Dmytro Kosiachevskyi Karen Lim Vedarethinam Ravi Josny Joy Kelda Goh Jose Vitorio Emiliano Jerome E. Lombardi A. H. Castro Neto |
| author_facet | Juan A. G. Carrio Ricardo K. Donato Alexandra Carvalho Gavin K. W. Koon Katarzyna Z. Donato Xin Hui Yau Dmytro Kosiachevskyi Karen Lim Vedarethinam Ravi Josny Joy Kelda Goh Jose Vitorio Emiliano Jerome E. Lombardi A. H. Castro Neto |
| author_sort | Juan A. G. Carrio |
| collection | DOAJ |
| description | Abstract Kaolinite is a single 2D layer of kaolin or metakaolin (MK), common clays that can be characterized as layered 3D materials. We show that because of its chemical composition, kaolinite can be converted into an amorphous 3D material by chemical means. This dimensional transformation is possible due to the large surface to volume ratio and chemical reactivity of kaolinite. We investigate the formation and influence of quasi- or nanocrystalline phases in MK-based alkali-activated materials (AAM) that are related to the Si/Al ratio. We analyze the formation of an AAM from a MK precursor, which is a 3D bonded network that preserves the layered structure at the nanometer scale. We also exfoliate the remaining layered phase to examine the effects of the alkali-activation in the final sheet structures embedded within the amorphous network. The final material can be used as a cement with no carbon dioxide produced by the transformation reaction. |
| format | Article |
| id | doaj-art-137dbf390c584e64b70be82f5766b444 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-137dbf390c584e64b70be82f5766b4442025-01-12T12:20:31ZengNature PortfolioScientific Reports2045-23222025-01-0115111210.1038/s41598-024-81882-1From 2D kaolinite to 3D amorphous cementJuan A. G. Carrio0Ricardo K. Donato1Alexandra Carvalho2Gavin K. W. Koon3Katarzyna Z. Donato4Xin Hui Yau5Dmytro Kosiachevskyi6Karen Lim7Vedarethinam Ravi8Josny Joy9Kelda Goh10Jose Vitorio Emiliano11Jerome E. Lombardi12A. H. Castro Neto13Centre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeCentre for Advanced 2D Materials, National University of SingaporeAbstract Kaolinite is a single 2D layer of kaolin or metakaolin (MK), common clays that can be characterized as layered 3D materials. We show that because of its chemical composition, kaolinite can be converted into an amorphous 3D material by chemical means. This dimensional transformation is possible due to the large surface to volume ratio and chemical reactivity of kaolinite. We investigate the formation and influence of quasi- or nanocrystalline phases in MK-based alkali-activated materials (AAM) that are related to the Si/Al ratio. We analyze the formation of an AAM from a MK precursor, which is a 3D bonded network that preserves the layered structure at the nanometer scale. We also exfoliate the remaining layered phase to examine the effects of the alkali-activation in the final sheet structures embedded within the amorphous network. The final material can be used as a cement with no carbon dioxide produced by the transformation reaction.https://doi.org/10.1038/s41598-024-81882-1Clays2D materialsMetakaolinAlkali-activationGeopolymer |
| spellingShingle | Juan A. G. Carrio Ricardo K. Donato Alexandra Carvalho Gavin K. W. Koon Katarzyna Z. Donato Xin Hui Yau Dmytro Kosiachevskyi Karen Lim Vedarethinam Ravi Josny Joy Kelda Goh Jose Vitorio Emiliano Jerome E. Lombardi A. H. Castro Neto From 2D kaolinite to 3D amorphous cement Scientific Reports Clays 2D materials Metakaolin Alkali-activation Geopolymer |
| title | From 2D kaolinite to 3D amorphous cement |
| title_full | From 2D kaolinite to 3D amorphous cement |
| title_fullStr | From 2D kaolinite to 3D amorphous cement |
| title_full_unstemmed | From 2D kaolinite to 3D amorphous cement |
| title_short | From 2D kaolinite to 3D amorphous cement |
| title_sort | from 2d kaolinite to 3d amorphous cement |
| topic | Clays 2D materials Metakaolin Alkali-activation Geopolymer |
| url | https://doi.org/10.1038/s41598-024-81882-1 |
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