Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
15(1)
Published: June 7, 2023
Human
metabolite
moisture
detection
is
important
in
health
monitoring
and
non-invasive
diagnosis.
However,
ultra-sensitive
quantitative
extraction
of
respiration
information
real-time
remains
a
great
challenge.
Herein,
chemiresistors
based
on
imine-linked
covalent
organic
framework
(COF)
films
with
dual-active
sites
are
fabricated
to
address
this
issue,
which
demonstrates
an
amplified
humidity-sensing
signal
performance.
By
regulation
monomers
functional
groups,
these
COF
can
be
pre-engineered
achieve
high
response,
wide
range,
fast
recovery
time.
Under
the
condition
relative
humidity
ranging
from
13
98%,
COFTAPB-DHTA
film-based
sensor
exhibits
outstanding
sensing
performance
expanded
response
value
390
times.
Furthermore,
values
highly
linear
range
below
60%,
reflecting
mechanism
at
molecular
level.
Based
dual-site
adsorption
(-C=N-)
(C-N)
stretching
vibrations,
reversible
tautomerism
induced
by
hydrogen
bonding
water
molecules
demonstrated
main
intrinsic
for
effective
detection.
In
addition,
synthesized
further
exploited
effectively
detect
human
nasal
oral
breathing
as
well
fabric
permeability,
will
inspire
novel
designs
humidity-detection
devices.
Chemical Society Reviews,
Journal Year:
2021,
Volume and Issue:
51(2), P. 672 - 719
Published: Dec. 21, 2021
This
review
article
is
devoted
to
bridging
the
conventional
and
newly-developed
NF
membranes
with
potential
environmental
applications
by
systematically
discussing
synthesis–property–performance
relationships.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(44)
Published: Sept. 4, 2021
Membranes
of
sub-2-nanometer
channels
show
high
ion
transport
rates,
but
it
remains
a
great
challenge
to
design
such
membranes
with
desirable
selectivities
for
separation
applications.
Here,
covalent
organic
framework
(COF)
channel
size
≈1.4
nm
and
abundant
hydrogen
bonding
sites,
exhibiting
efficient
sieving
properties
are
demonstrated.
The
COF
have
monovalent
cation
permeation
rates
0.1-0.2
mol
m-2
h-1
extremely
low
multivalent
permeabilities,
leading
over
divalent
K+
/Mg2+
≈765,
Na+
≈680,
Li+
≈217.
Experimental
measurements
theoretical
simulations
reveal
that
the
interaction
between
hydrated
cations
wall
governs
selectivity,
through
needs
overcome
higher
energy
barriers
than
cations.
These
findings
provide
an
effective
strategy
developing
sized
specific
sites
high-efficiency
ionic
separation.
ACS Nano,
Journal Year:
2022,
Volume and Issue:
16(3), P. 4684 - 4692
Published: March 2, 2022
Oil
leakage
is
a
global
environmental
issue
and
happens
frequently,
resulting
in
waste
of
oil
resources
even
threatening
the
safety
marine
creatures
humans.
Because
unidirectional
transportation
performance,
"oil-diode"
Janus
membranes
have
attracted
lots
attention
for
oil/water
separation.
However,
hydrophobic
side
traditional
membrane
completely
hydrophobic,
an
easy
permeation
oil,
which
hampers
light
recycling.
Herein,
we
provide
facile
approach
to
develop
with
special
wettable
structure
fast
refining.
The
material
characteristics
surface
wettability
that
generate
superimposed
efforts
are
vital
fabricate
membranes.
Interestingly,
manufactured
exhibit
extra-high
intrusion
pressure
up
12
kPa
present
high
permeance
about
2993
L
m-2
h-1
bar-1
separating
stable
water-in-oil
emulsion
containing
surfactant
separation
efficiency
99.6%,
thereby
showing
promising
potential
recovery
Advanced Membranes,
Journal Year:
2022,
Volume and Issue:
2, P. 100032 - 100032
Published: Jan. 1, 2022
Mono-/multivalent
ion-selective
separation
has
become
a
common
requirement
at
the
water-energy
nexus,
including
energy
storage
and
conversion,
water
purification,
sustainable
industrial
processes.
In
this
review,
we
summarize
theory
of
ion
transport
through
membrane
mechanisms
selective
in
nanofiltration
(NF)
briefly.
Recent
advancing
improving
mono-/multivalent
selectivity
thin-film
composite
(TFC)
NF
via
size
sieving
enhancement,
electric
charge
property
regulation
co-enhancement
properties
are
concluded.
What's
more,
three
material
classes—surface
assembly
materials,
nanomaterials
biomimetic
channels
highlighted
as
candidates
for
preparation
membranes.
Lastly,
design
directions
critical
challenges
developing
high-selectivity
membranes
based
on
provided.
Science,
Journal Year:
2023,
Volume and Issue:
382(6667), P. 202 - 206
Published: Oct. 12, 2023
Existing
polyamide
(PA)
membrane
synthesis
protocols
are
underpinned
by
controlling
diffusion-dominant
liquid-phase
reactions
that
yield
subpar
spatial
architectures
and
ionization
behavior.
We
report
an
ice-confined
interfacial
polymerization
strategy
to
enable
the
effective
kinetic
control
of
reaction
thermodynamic
manipulation
hexagonal
polytype
(Ih)
ice
phase
containing
monomers
rationally
synthesize
a
three-dimensional
quasilayered
PA
for
nanofiltration.
Experiments
molecular
simulations
confirmed
underlying
formation
mechanism.
Our
nanofiltration
features
high-density
ionized
structure
exceptional
transport
channels,
realizing
superior
water
permeance
excellent
ion
selectivity.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Dec. 27, 2022
Microporous
organic
nanotubes
(MONs)
hold
considerable
promise
for
designing
molecular-sieving
membranes
because
of
their
high
microporosity,
customizable
chemical
functionalities,
and
favorable
polymer
affinity.
Herein,
we
report
the
use
MONs
derived
from
covalent
frameworks
to
engineer
15-nm-thick
microporous
via
interfacial
polymerization
(IP).
The
incorporation
a
highly
porous
interpenetrated
MON
layer
on
membrane
before
IP
reaction
leads
formation
polyamide
with
Turing
structure,
enhanced
reduced
thickness.
MON-modified
achieve
remarkable
water
permeability
41.7
L
m-2
h-1
bar-1
retention
boron
(78.0%)
phosphorus
(96.8%)
at
alkaline
conditions
(pH
10),
surpassing
those
reported
nanofiltration
membranes.
Molecular
simulations
reveal
that
introducing
not
only
reduces
amine
molecule
diffusion
toward
phase
boundary
but
also
increases
porosity
density
molecules
around
pores.
This
MON-regulated
strategy
provides
guidelines
creating
high-permeability
precise
nanofiltration.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(52)
Published: Oct. 8, 2021
Covalent
organic
frameworks
(COFs)
are
a
class
of
porous
crystalline
materials
whose
facile
preparation,
functionality,
and
modularity
have
led
to
their
becoming
powerful
platforms
for
the
development
molecular
devices
in
many
fields
(bio)engineering,
such
as
energy
storage,
environmental
remediation,
drug
delivery,
catalysis.
In
particular,
ionic
COFs
(iCOFs)
highly
useful
constructing
devices,
functional
groups
can
transport
ions
efficiently,
nonlabile
ordered
all-covalent
pore
structures
backbones
provide
ideal
pathways
long-term
under
harsh
electrochemical
conditions.
Here,
current
research
progress
on
use
iCOFs
specifically
lithium-based
batteries
fuel
cells,
is
reviewed
terms
iCOF
backbone-design
strategies,
synthetic
approaches,
properties,
engineering
techniques,
applications.
categorized
anionic
or
cationic
COFs,
how
each
these
types
lithium
ions,
protons,
hydroxides
illustrated.
Finally,
challenges
future
opportunities
utilization
described.
This
review
will
therefore
serve
reference
state-of-the-art
design
application
strategies
focusing
devices.
