Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 11, 2024
Membranes
with
switchable
wettability,
solvent
resistance,
and
toughness
have
emerged
as
promising
materials
for
separation
applications.
However,
challenges
like
limited
mechanical
strength,
poor
chemical
stability,
structural
defects
during
membrane
fabrication
hinder
their
widespread
adoption.
Covalent
organic
frameworks
(COFs),
crystalline
constructed
from
molecules
connected
by
covalent
bonds,
offer
a
solution
due
to
high
porosity,
customizable
properties.
The
ordered
structures
functionality
provide
COFs
lightweight
framework,
large
surface
area,
tunable
pore
sizes,
which
attracted
increasing
attention
applications
in
separations.
Recent
research
has
extensively
explored
the
preparation
strategies
of
COF
membranes
various
processes.
This
review
uniquely
delves
into
influence
techniques,
including
interfacial
polymerization,
layer-by-layer
assembly,
situ
growth,
on
thickness
performance.
It
comprehensively
explores
design
potential
these
methods,
particular
focus
gas
separation,
oil/water
nanofiltration.
Furthermore,
future
opportunities,
within
this
field,
directions
development
are
proposed.
Ultrasonics Sonochemistry,
Journal Year:
2024,
Volume and Issue:
108, P. 106967 - 106967
Published: June 22, 2024
The
transformation
of
salvianolic
acid
B
brought
on
by
heat
treatment
recovery
ethanol
eluent,
which
is
a
difficult
problem
in
pharmaceutical
technology,
affects
the
purity
raw
material
when
medicinal
purified
resin.
Ultrasonic-assisted
nanofiltration
separation
(UANS)
was
first
employed
to
improve
efficiency
resource
utilization
regulating
rejection
and
separating
rosmarinic
from
organic
wastewater.
related
three
variables:
ultrasonic
power,
pH,
concentration.
But
there
were
differences
effects
variables
rejections
acid.
showed
decreasing
trend
with
an
increase
power
or
decrease
pH;
however,
concentration
increased
5
%
35
%,
84.96
96.60
decreased
35.09
17.51
%.
On
basis
response
surface
methodology
(RSM),
optimal
UANS
parameters
for
solution
conditions
involving
different
concentrations
are
as
follows:
10
(ultrasonic
500
W
pH
6.15),
20
6.54),
30
460
6.34).
molecular
proportions
10.75
7.13
8.27
wastewater,
while
40.52
33.83
69.87
respectively.
And
recoveries
wastewater
93.56
95.04
97.30
respectively,
3.19
2.27
0.56
proportion
correlated
exponentially.
In
comparison
conventional
(CNS),
able
resolve
conflict
between
well
enhance
recycling
prevent
pollution
environment
Experiments
using
at
intensities
suggest
that
intensity
46-50
W/L
density
0.92-1.00
W/cm
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 8, 2025
Abstract
3D
covalent
organic
framework
(3D
COF)
membranes
with
sub‐nanometer
pore
sizes
and
continuous
channels
offer
a
promising
route
for
efficient
molecular
sieving.
Nevertheless,
fine‐tuning
the
of
dense
COF
membranes,
especially
those
based
on
identical
monomer
compositions,
presents
significant
challenge.
Herein,
an
effective
facile
interfacial
reaction
strategy
is
developed
to
fabricate
320
variable
sizes.
By
simply
changing
composition
dual
acids,
both
structure
membrane
assembly
process
are
regulated,
enabling
control
over
thicknesses.
The
exhibited
high
solvent
permeance
could
efficiently
separate
molecules
similar
weights.
Moreover,
further
investigations
revealed
that
as‐prepared
solvent‐responsive,
enlarging
their
intrinsic
when
exposed
methanol.
varying
ratio
water
methanol,
facilitate
graded
sieving
complex
dye
mixtures,
achieving
solute‐solute
separation.
Accounts of Chemical Research,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 11, 2025
ConspectusMass
transport
is
fundamental
to
biological
systems
and
industrial
processes,
governing
chemical
reactions,
substance
exchange,
energy
conversion
across
various
material
scales.
In
systems,
ion
transport,
such
as
proton
migration
through
voltage-gated
channels,
regulates
cellular
potential,
signaling,
metabolic
balance.
transporting
molecules
solid,
liquid,
or
gas
phases
dictates
reactant
contact
diffusion
rates,
directly
impacting
reaction
efficiency
conversion.
Optimizing
these
processes
necessitates
the
design
of
efficient
interfaces
channels
enhance
mass
transport.Crystalline
porous
materials,
particularly
covalent
organic
frameworks
(COFs),
offer
an
excellent
platform
for
investigating
optimizing
transport.
With
ordered,
pre-engineered
nano-
subnanometer
pores,
COFs
enable
confined
garnered
significant
attention
conversion,
catalysis,
drug
delivery,
adsorption,
separation
applications.
Deeper
investigations
into
mechanism
in
at
molecular
level
are
crucial
advancing
materials
science,
chemistry,
engineering.Our
group
focuses
on
explore
multisubstance
cooperative
mechanisms
structure-activity
relationships
ions,
water,
gases.
We
have
expanded
linker
chemistry
by
developing
irreversible
α-aminoketone-linked
introducing
Suzuki
coupling
COF
preparation.
proposed
strategies
side-chain-induced
dipole-facilitated
stacking
prenucleation
slow
growth
achieve
record
large
pore
sizes
highly
oriented
nanochannels.
implemented
exfoliation
interwoven
strategy
accelerate
complex
interfaces,
refined
permeability
sieve-based
membranes
precise
size
engineering,
elucidated
effects
hydrophobicity/hydrophilicity
water
phase
transition
diffusion.
Building
insights,
we
designed
novel
open
framework
ionomers
tailor
microenvironment
electrocatalytic
uncovered
multiple
mechanisms.
The
synergistically
enhanced
three-phase
effectively
modulates
electrochemical
CO2
reduction
pathway
significantly
boosts
power
density
proton-exchange
membrane
fuel
cells
(PEMFCs).In
this
Account,
summarize
recent
advances
COF-based
emphasizing
nanochannel
construction
strategies,
including
linkage,
size,
orientation,
function
gradient
modulations.
discuss
functional
COFs,
correlations
between
structure
properties,
their
applications
separation,
storage,
catalysis.
Finally,
outline
current
challenges
future
opportunities
synthetic
mechanisms,
By
understanding
phenomena
from
microscopic
particles
macroscopic
scales,
Account
aims
provide
aligning
with
offering
insights
catalytic
performance.
