Molecules,
Год журнала:
2023,
Номер
28(14), С. 5590 - 5590
Опубликована: Июль 22, 2023
An
environmentally
friendly
pore
size-controlled,
superhydrophobic
polylactic
acid
(PLA)
membrane
was
successfully
prepared
by
a
simpler
freeze
solidification
phase
separation
method
(FSPS)
and
solution
impregnation,
which
has
application
prospects
in
the
field
of
oil–water
separation.
The
size
structure
were
adjusted
different
solvent
ratios
impregnation
ratios.
PLA-FSPS
after
(S-PLA-FSPS)
had
characteristics
uniform
size,
superhydrophobicity
super
lipophilicity,
its
surface
roughness
Ra
338
nm,
contact
angle
to
water
151°.
S-PLA-FSPS
used
for
oil
flux
reached
16,084
L·m−2·h−1,
efficiency
99.7%,
much
higher
than
that
other
materials.
In
addition,
could
also
be
applied
adsorption
removal
slicks
underwater
heavy
oil.
great
potential
Chemical Communications,
Год журнала:
2023,
Номер
59(78), С. 11631 - 11647
Опубликована: Янв. 1, 2023
Covalent
organic
frameworks
(COFs)
are
porous
and
crystalline
polymers,
which
have
found
usage
in
various
fields.
These
tailorable
through
the
introduction
of
diverse
functionalities
into
platform.
Indeed,
functionality
plays
a
key
role
their
different
applications.
However,
sometimes
functional
groups
not
compatible
with
reaction
conditions
or
can
compete
interfere
other
monomers
direct
synthetic
method.
Also,
pre-synthesis
bulky
moieties
COFs
negatively
affect
crystal
formation.
To
avoid
these
problems
post-synthetic
modification
(PSM)
approach
is
helpful
tactic.
assistance
this
strategy
size
be
tunable
stability
improved
without
considerable
effect
on
crystallite.
In
addition,
conductivity,
hydrophobicity/
hydrophilicity,
chirality
among
features
that
reformed
review,
types
PSM
strategies
based
recent
articles
been
divided
four
categories:
(i)
post-functionalization,
(ii)
post-metalation,
(iii)
chemical
locking,
(iv)
host-guest
post-modifications.
Post-functionalization
locking
methods
covalent
bond
formation
while
post-metalation
post-modifications,
non-covalent
bonds
formed.
potential
post-modified
energy
storage
conversion
(lithium-sulfur
batteries,
hydrogen
storage,
proton-exchange
membrane
fuel
cells,
water
splitting),
heterogeneous
catalysts,
food
safety
evaluation,
gas
separation,
environmental
domains
(greenhouse
capture,
radioactive
element
uptake,
remediation),
biological
applications
(drug
delivery,
biosensors,
biomarker
chiral
column
chromatography,
solid-state
smart
nanochannels)
discussed.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Фев. 17, 2024
Abstract
The
direct
use
of
flue
gas
for
the
electrochemical
CO
2
reduction
reaction
is
desirable
but
severely
limited
by
thermodynamically
favorable
oxygen
reaction.
Herein,
a
photonicswitching
unit
1,2-Bis(5’-formyl-2’-methylthien-3’-yl)cyclopentene
(DAE)
integrated
into
cobalt
porphyrin-based
covalent
organic
framework
highly
efficient
electrocatalysis
under
aerobic
environment.
DAE
moiety
in
material
can
reversibly
modulate
O
activation
capacity
and
electronic
conductivity
ring-closing/opening
reactions
UV/Vis
irradiation.
DAE-based
with
ring-closing
type
shows
high
Faradaic
efficiency
90.5%
partial
current
density
−20.1
mA
cm
−2
at
−1.0
V
vs.
reversible
hydrogen
electrode
co-feeding
5%
.
This
work
presents
an
passivation
strategy
to
realize
electroreduction
performance
,
which
would
inspire
design
electrocatalysts
practical
source
such
as
from
power
plants
or
air.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(20), С. 10012 - 10043
Опубликована: Янв. 1, 2024
Bioinspired
superwetting
oil–water
separation
strategy
is
summarized
from
confined-space
to
open-space,
static
dynamic
devices.
Strategies
are
evaluated
and
compared
current
challenges
feasible
solutions
emphasized.
ACS Applied Energy Materials,
Год журнала:
2024,
Номер
7(7), С. 2872 - 2880
Опубликована: Март 19, 2024
Covalent
organic
frameworks
(COFs),
having
a
very
diverse
structural
makeup,
flexibility,
nanoscale
porosity,
and
exceptionally
high
surface
area,
have
recently
attracted
huge
amount
of
interest
as
the
emerging
materials
for
energy
environmental
research.
Herein,
by
employing
Schiff
base
reaction
route,
we
planned
synthesized
two
imine-linked
π-conjugated
COFs
(IC–COFs),
i.e.,
TFPh-NDA
TFR-NDA,
explored
them
electrode
asymmetric
supercapacitor
application.
The
TFR-NDA
IC-COFs
possess
crystallinity
large
area
with
bimodal
porosity.
showed
redox-active
behavior
exhibited
an
outstanding
gravimetric
capacitance
583
F·g–1
362
in
three-electrode
configuration.
IC-COF//activated
carbon
(AC)-based
devices
(ASDs)
exhibit
wide
voltage
window
2.5
V
(−1.0
to
1.5),
indicating
its
potentiality
market.
specific
ASD
was
evaluated
at
different
scan
rates,
maximum
323.25
1
mV·s–1.
Moreover,
power
density
404.06
W·kg–1,
has
280.58
W
h·kg–1.
as-fabricated
IC-COF//AC
exhibits
ultrastable
retention
98%
initial
even
after
10,000
CV
cycles.
This
discovery
is
example
prospective
contender
applications
involving
capacitive
storage.
ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(20), С. 24836 - 24845
Опубликована: Май 16, 2023
The
development
of
chiral
covalent
organic
frameworks
(COFs)
by
postsynthetic
modification
is
challenging
due
to
the
common
occurrences
racemization
and
crystallinity
decrement
under
harsh
conditions.
Herein,
we
employ
an
effective
site-selective
synthetic
strategy
for
fabrication
amine-functionalized
hydrazone-linked
COF,
NH2-Th-Tz
Schiff-base
condensation
between
aminoterephthalohydrazide
(NH2-Th)
4,4',4″-(1,3,5-triazine-2,4,6-triyl)tribenzaldehyde
(Tz).
resulting
COF
with
free
amine
groups
on
pore
walls
provides
appealing
platform
install
desired
moieties
through
modification.
Three
including
tartaric
acid,
camphor-10-sulfonyl
chloride,
diacetyl-tartaric
anhydride
were
postsynthetically
integrated
into
reacting
acyl
anhydride,
giving
rise
a
series
COFs
distinctive
surfaces.
Moreover,
crystallinity,
porosity,
chirality
retained
after
Remarkably,
exhibited
exceptional
enantioselective
adsorption
capability
toward
tyrosine
maximum
enantiomeric
excess
(ee)
value
up
25.20%.
Molecular
docking
simulations
along
experimental
results
underscored
pivotal
role
hydrogen
bonds
in
adsorption.
This
work
highlights
potential
synthesis
as
tool
preparation
highly
crystalline
robust
amine-decorated
COFs,
which
offer
auspicious
facile
tailor-made
beyond.
Advanced Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 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.
