Kian Ping Loh

@article{ISI:001396241000050,
title = {From 2D kaolinite to 3D amorphous cement},
author = {Juan A G Carrio and Ricardo K Donato and Alexandra Carvalho and Gavin K W Koon and Katarzyna Z Donato and Xin Hui Yau and Dmytro Kosiachevskyi and Karen Lim and Vedarethinam Ravi and Josny Joy and Kelda Goh and Jose Vitorio Emiliano and Jerome E Lombardi and Castro A H Neto},
doi = {10.1038/s41598-024-81882-1},
times_cited = {0},
issn = {2045-2322},
year = {2025},
date = {2025-01-11},
journal = {SCIENTIFIC REPORTS},
volume = {15},
number = {1},
publisher = {NATURE PORTFOLIO},
address = {HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY},
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.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{ISI:001186210500001,
title = {Fibrillation of Pristine 2D Materials by 2D-Confined Electrolytes},
author = {Hui Li Tan and Katarzyna Z Donato and Mariana C F Costa and Alexandra Carvalho and Maxim Trushin and Pei Rou Ng and Xin Hui Yau and Gavin K W Koon and Jakub Tolasz and Zuzana Nemeckova and Petra Ecorchard and Ricardo K Donato and Antonio Castro H Neto},
doi = {10.1002/adfm.202315038},
times_cited = {1},
issn = {1616-301X},
year = {2024},
date = {2024-03-18},
journal = {ADVANCED FUNCTIONAL MATERIALS},
volume = {34},
number = {29},
publisher = {WILEY-V C H VERLAG GMBH},
address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
abstract = {2D materials are solid microscopic flakes with a-few-Angstrom thickness possessing some of the largest surface-to-volume ratios known. Altering their conformation state from a flat flake to a scroll or fiber offers a synergistic association of properties arising from 2D and 1D nanomaterials. However, a combination of the long-range electrostatic and short-range solvation forces produces an interlayer repulsion that has to be overcome, making scrolling 2D materials without disrupting the pristine structure a challenging task. Herein, a facile method is presented to alter the 2D materials' inter-layer interactions by confining organic salts onto their basal area, forming 2D-confined electrolytes. The confined electrolytes produce local charge inhomogeneities, which can conjugate across the interlayer gap, binding the two surfaces. This allows the 2D-confined electrolytes to behave as polyelectrolytes within a higher dimensional order (2D -> 1D) and form robust nanofibers with distinct electronic properties. The method is not material-specific and the resulting fibers are tightly bound even though the crystal structure of the basal plane remains unaltered.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}