Carrio, Juan A G; Talluri, Vssl Prasad; Toolahalli, Swamy T; Echeverrigaray, Sergio G; Neto, Antonio Castro H Cross-Linked Self-Standing Graphene Oxide Membranes: A Pathway to
Scalable Applications in Separation Technologies MEMBRANES, 15 (1), 2025, DOI: 10.3390/membranes15010031. Abstract | BibTeX | Endnote @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}
}
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. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFJuan A G Carrio
Vssl Prasad Talluri
Swamy T Toolahalli
Sergio G Echeverrigaray
Antonio H Castro Neto
- TICross-Linked Self-Standing Graphene Oxide Membranes: A Pathway to
Scalable Applications in Separation Technologies - SOMEMBRANES
- DTArticle
- ABThe 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. - Z90
- PUMDPI
- PAST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
- VL15
- DI10.3390/membranes15010031
- UTWOS:001404434600001
- ER
- EF
|
Carvalho, Alexandra; Nair, Vivek; Echeverrigaray, Sergio G; Neto, Antonio Castro H High Capacity NbS2-Based Anodes for Li-Ion Batteries ACS OMEGA, 9 (31), pp. 33912-33918, 2024, DOI: 10.1021/acsomega.4c04118. Abstract | BibTeX | Endnote @article{WOS:001276227300001,
title = {High Capacity NbS2-Based Anodes for Li-Ion Batteries},
author = {Alexandra Carvalho and Vivek Nair and Sergio G Echeverrigaray and Antonio Castro H Neto},
doi = {10.1021/acsomega.4c04118},
times_cited = {4},
issn = {2470-1343},
year = {2024},
date = {2024-07-01},
journal = {ACS OMEGA},
volume = {9},
number = {31},
pages = {33912-33918},
publisher = {AMER CHEMICAL SOC},
address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
abstract = {We have investigated the lithium capacity of the 2H phase of niobium
sulfide (NbS2) using density functional theory calculations and
experiments. Theoretically, this material is found to allow the
intercalation of a double layer of Li in between each NbS2 layer when in
equilibrium with metal Li. The resulting specific capacity (340.8 mAh/g
for the pristine material, 681.6 mAh/g for oxidized material) can reach
more than double the specific capacity of graphite anodes. The presence
of various defects leads to an even higher capacity with a partially
reversible conversion of the material, indicating that the performance
of the anodes is robust with respect to the presence of defects.
Experiments in battery prototypes with NbS2-based anodes find a first
specific capacity of about 1,130 mAh/g, exceeding the theoretical
predictions.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
We have investigated the lithium capacity of the 2H phase of niobium
sulfide (NbS2) using density functional theory calculations and
experiments. Theoretically, this material is found to allow the
intercalation of a double layer of Li in between each NbS2 layer when in
equilibrium with metal Li. The resulting specific capacity (340.8 mAh/g
for the pristine material, 681.6 mAh/g for oxidized material) can reach
more than double the specific capacity of graphite anodes. The presence
of various defects leads to an even higher capacity with a partially
reversible conversion of the material, indicating that the performance
of the anodes is robust with respect to the presence of defects.
Experiments in battery prototypes with NbS2-based anodes find a first
specific capacity of about 1,130 mAh/g, exceeding the theoretical
predictions. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFAlexandra Carvalho
Vivek Nair
Sergio G Echeverrigaray
Antonio Castro H Neto
- TIHigh Capacity NbS2-Based Anodes for Li-Ion Batteries
- SOACS OMEGA
- DTArticle
- ABWe have investigated the lithium capacity of the 2H phase of niobium
sulfide (NbS2) using density functional theory calculations and
experiments. Theoretically, this material is found to allow the
intercalation of a double layer of Li in between each NbS2 layer when in
equilibrium with metal Li. The resulting specific capacity (340.8 mAh/g
for the pristine material, 681.6 mAh/g for oxidized material) can reach
more than double the specific capacity of graphite anodes. The presence
of various defects leads to an even higher capacity with a partially
reversible conversion of the material, indicating that the performance
of the anodes is robust with respect to the presence of defects.
Experiments in battery prototypes with NbS2-based anodes find a first
specific capacity of about 1,130 mAh/g, exceeding the theoretical
predictions. - Z94
- PUAMER CHEMICAL SOC
- PA1155 16TH ST, NW, WASHINGTON, DC 20036 USA
- SN2470-1343
- VL9
- BP33912
- EP33918
- DI10.1021/acsomega.4c04118
- UTWOS:001276227300001
- ER
- EF
|
Costa, Mariana C F; Echeverrigaray, Sergio G; Andreeva, Daria V; Novoselov, Kostya S; Neto, Antonio Castro H Two-Dimensional Quantum Dots: From Photoluminescence to Biomedical
Applications SOLIDS, 3 (4), pp. 578-602, 2022, DOI: 10.3390/solids3040037. Abstract | BibTeX | Endnote @article{WOS:001168832500001,
title = {Two-Dimensional Quantum Dots: From Photoluminescence to Biomedical
Applications},
author = {Mariana C F Costa and Sergio G Echeverrigaray and Daria V Andreeva and Kostya S Novoselov and Antonio Castro H Neto},
doi = {10.3390/solids3040037},
times_cited = {5},
year = {2022},
date = {2022-12-01},
journal = {SOLIDS},
volume = {3},
number = {4},
pages = {578-602},
publisher = {MDPI},
address = {ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND},
abstract = {Quantum dots (QDs) play a fundamental role in nanotechnology because of
their unique optical properties, especially photoluminescence (PL).
Quantum confinement effects combined with tailor-made materials make QDs
extremely versatile for understanding basic physical phenomena intrinsic
to them as well as defining their use in a vast range of applications.
With the advent of graphene in 2004, and the discovery of numerous other
two-dimensional (2D) materials subsequently, it became possible to
develop novel 2D quantum dots (2DQDs). Intensive research of the
properties of 2DQDs over the last decade have revealed their outstanding
properties and grabbed the attention of researchers from different
fields: from photonics and electronics to catalysis and medicine. In
this review, we explore several aspects of 2DQDs from their synthesis,
functionalization, and characterization to applications, focusing on
their bioimaging, biosensing, and theranostic solutions},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Quantum dots (QDs) play a fundamental role in nanotechnology because of
their unique optical properties, especially photoluminescence (PL).
Quantum confinement effects combined with tailor-made materials make QDs
extremely versatile for understanding basic physical phenomena intrinsic
to them as well as defining their use in a vast range of applications.
With the advent of graphene in 2004, and the discovery of numerous other
two-dimensional (2D) materials subsequently, it became possible to
develop novel 2D quantum dots (2DQDs). Intensive research of the
properties of 2DQDs over the last decade have revealed their outstanding
properties and grabbed the attention of researchers from different
fields: from photonics and electronics to catalysis and medicine. In
this review, we explore several aspects of 2DQDs from their synthesis,
functionalization, and characterization to applications, focusing on
their bioimaging, biosensing, and theranostic solutions - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFMariana C F Costa
Sergio G Echeverrigaray
Daria V Andreeva
Kostya S Novoselov
Antonio Castro H Neto
- TITwo-Dimensional Quantum Dots: From Photoluminescence to Biomedical
Applications - SOSOLIDS
- DTArticle
- ABQuantum dots (QDs) play a fundamental role in nanotechnology because of
their unique optical properties, especially photoluminescence (PL).
Quantum confinement effects combined with tailor-made materials make QDs
extremely versatile for understanding basic physical phenomena intrinsic
to them as well as defining their use in a vast range of applications.
With the advent of graphene in 2004, and the discovery of numerous other
two-dimensional (2D) materials subsequently, it became possible to
develop novel 2D quantum dots (2DQDs). Intensive research of the
properties of 2DQDs over the last decade have revealed their outstanding
properties and grabbed the attention of researchers from different
fields: from photonics and electronics to catalysis and medicine. In
this review, we explore several aspects of 2DQDs from their synthesis,
functionalization, and characterization to applications, focusing on
their bioimaging, biosensing, and theranostic solutions - Z95
- PUMDPI
- PAST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
- VL3
- BP578
- EP602
- DI10.3390/solids3040037
- UTWOS:001168832500001
- ER
- EF
|
