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@article{WOS: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 = {6},
issn = {2045-2322},
year = {2025},
date = {2025-01-01},
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{WOS:001404434600001,
title = {Cross-Linked Self-Standing Graphene Oxide Membranes: A Pathway to
Scalable Applications in Separation Technologies},
author = {Juan A G Carrio and Vssl Prasad Talluri and Swamy T Toolahalli and Sergio G Echeverrigaray and Antonio H Castro Neto},
doi = {10.3390/membranes15010031},
times_cited = {0},
year = {2025},
date = {2025-01-01},
journal = {MEMBRANES},
volume = {15},
number = {1},
publisher = {MDPI},
address = {ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND},
abstract = {The large-scale implementation of 2D material-based membranes is
hindered by mechanical stability and mass transport control challenges.
This work describes the fabrication, characterisation, and testing of
self-standing graphene oxide (GO) membranes cross-linked with oxides
such as Fe2O3, Al2O3, CaSO4, Nb2O5, and a carbide, SiC. These
cross-linking agents enhance the mechanical stability of the membranes
and modulate their mass transport properties. The membranes were
prepared by casting aqueous suspensions of GO and SiC or oxide powders
onto substrates, followed by drying and detachment to yield
self-standing films. This method enabled precise control over membrane
thickness and the formation of laminated microstructures with interlayer
spacings ranging from 0.8 to 1.2 nm. The resulting self-standing
membranes, with areas between 0.002 m2 and 0.090 m2 and thicknesses from
0.6 mu m to 20 mu m, exhibit excellent flexibility and retain their
chemical and physical integrity during prolonged testing in direct
contact with ethanol/water and methanol/water mixtures in both liquid
and vapour phases, with stability demonstrated over 24 h and up to three
months. Gas permeation and chemical characterisation tests evidence
their suitability for gas separation applications. The interactions
promoted by the oxides and carbide with the functional groups of GO
confer great stability and unique mass transport properties-the Nb2O5
cross-linked membranes present distinct performance
characteristics-creating the potential for scalable advancements in
cross-linked 2D material membranes for separation technologies.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}