Advances of functional graphdiyne in separation and detection
Talanta,
Journal Year:
2025,
Volume and Issue:
287, P. 127673 - 127673
Published: Jan. 30, 2025
Language: Английский
A cation-gating mechanism for enhanced CO2/N2 separation by porous nanostructure supported ionic liquid membrane
Guochao Sun,
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Yunan Wang,
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Bing Fang
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et al.
The Journal of Chemical Physics,
Journal Year:
2025,
Volume and Issue:
162(9)
Published: March 6, 2025
2D
porous
material
supported
ionic
liquid
membranes
(SILMs)
have
demonstrated
great
potential
for
CO2
separation
and
purification,
outperforming
the
original
material.
However,
working
mechanism
behind
their
enhanced
selectivity
remains
unclear.
In
this
study,
we
conducted
molecular
dynamics
simulation
to
investigate
CO2/N2
performance
underlying
of
SILMs
taking
rhombic
N-graphdiyne
(r-N-GDY)
with
intrinsic
high
thermal
stability
structure
covered
1-butyl-3-methylimidazolium
tetrafluoroborate
as
representative
SILM
model.
We
found
that
increase
in
thickness
can
decrease
permeance
N2
but
effectively
selectivity.
The
optimal
is
be
0.6
nm
reaching
5.7
×
105
GPU
being
up
25.8,
which
15
times
higher
than
1.7
bare
r-N-GDY.
This
because
encounters
a
much
lower
transmembrane
energy
barrier
N2.
At
level,
it
fascinating
observe
cation-gating
mechanism,
where
IL
cations
play
determinative
role
More
specifically,
normally
bind
at
pore
site,
like
closed
gate
gas.
When
molecule
approaches
pore,
cation
moves
away;
thus,
opened
translocation.
contrast,
molecules
are
incapable
opening
gate.
Such
process
guarantees
SILMs.
study
offers
insight
into
provides
theoretical
guidance
designing
nanocomposite
gas
or
water
treatment.
Language: Английский
Separation of oxygen from nitrogen by a graphdiyine membrane: a quantum-mechanical study
Physical Chemistry Chemical Physics,
Journal Year:
2024,
Volume and Issue:
26(37), P. 24553 - 24563
Published: Jan. 1, 2024
Efficient
separation
of
oxygen
and
nitrogen
from
air
is
a
process
great
importance
for
many
industrial
medical
applications.
Two-dimensional
(2D)
membranes
are
very
promising
materials
gases,
as
they
offer
enhanced
mass
transport
due
to
their
smallest
atomic
thickness.
In
this
work,
we
examine
the
capacity
graphdiyne
(GDY),
new
2D
carbon
allotrope
with
regular
subnanometric
pores,
separating
(
Language: Английский
New Two-Dimensional Materials Obtained by Functionalization of Boron Graphdiyne Layers with Nickel
Nanomaterials,
Journal Year:
2024,
Volume and Issue:
14(21), P. 1706 - 1706
Published: Oct. 25, 2024
The
decoration
of
hexagonal
boron
graphdiyne
(BGDY)
layers
with
Ni
atoms
has
been
investigated
by
density
functional
calculations.
For
one,
two,
and
three
per
hexagon,
the
BGDY
structure
is
approximately
maintained.
Decoration
six
hexagon
leads
to
formation
a
novel,
very
stable
two-dimensional
material
in
which
substantially
distorted.
Ni-doped
materials
have
semiconductor
character,
electronic
band
gap
width
can
be
tailored
varying
amount
adsorbed
Ni.
BGDY-2Ni,
BGDY-3Ni,
BGDY-6Ni
gaps
promising
for
infrared
detectors.
This
work
shows
that
computer
simulation
helps
discover
new
functionalization
layered
carbon
metal
atoms.
Language: Английский