Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 10, 2025
Abstract
Defect‐engineering‐involved
metal‐organic
frameworks
(MOFs)
have
been
highly
valued
in
many
fields
due
to
the
enhanced
porosity
and
abundant
active
sites,
but
how
systematic
modulation
on
deficiency
influencing
fluorescent
sensing
performance
is
still
its
infancy.
Here,
defect‐engineering
of
MOF‐525
used
modulate
exposure
zirconium
(Zr)
clusters
sieving
capability
inner
channels,
enabling
precise
phosphoryl
fluoride
nerve
agents
with
specific
chemical
activity
molecular
dimensions.
Controllable
defects
transformed
localized
emission
porphyrin
into
ligand‐metal
charge
transferring
(LMCT)
gradual
loss
ligand
molecules,
which
interrupted
upon
coordination
agents,
triggering
a
red
turn‐on
fluorescence.
Thus,
defective
60%
effectively
discriminates
(e.g.,
sarin,
soman)
from
similar
substances
tabun,
venomous
agent
X)
synergistic
effect
dimension.
It
exhibits
sensitive
(0.96
n
m
/3.8
ppb),
rapid
(<1
s)
response
toward
target
robust
environmental
interference
acidic,
humid
common
substances.
This
work
enhances
understanding
MOFs
correpsonding
luminescent
behavior,
paving
new
avenue
for
strategy
trace
real
vapor.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Abstract
Photocatalysis
leverages
solar
energy
to
overcome
the
thermodynamic
barrier,
enabling
efficient
chemical
reactions
under
mild
conditions.
It
can
greatly
reduce
reliance
on
traditional
sources
and
has
attracted
significant
research
interest.
Reticular
materials,
including
metal‐organic
frameworks
(MOFs)
covalent
organic
(COFs),
represent
a
class
of
crystalline
materials
constructed
from
molecular
building
blocks
linked
by
coordination
bonds,
respectively.
function
as
heterogeneous
catalysts,
combining
well‐defined
structures
high
tailorability
akin
homogeneous
catalysts.
In
this
review,
regulation
light
absorption,
charge
separation,
surface
in
photocatalytic
process
through
precise
molecular‐level
design
based
features
reticular
is
elaborated.
Notably,
for
MOFsmicroenvironment
modulation
around
catalytic
sites
affects
performance
delved,
with
emphasis
their
unique
dynamic
flexible
microenvironments.
For
COFs,
inherent
excitonic
effects
due
fully
nature
discussed
highlight
strategies
regulate
charge‐
and/or
energy‐transfer‐mediated
photocatalysis.
Finally,
current
challenges
future
directions
field,
aiming
provide
comprehensive
understanding
how
be
optimized
enhanced
photocatalysis
discussed.
ACS Materials Au,
Год журнала:
2025,
Номер
5(2), С. 377 - 384
Опубликована: Янв. 31, 2025
Single-atom
nanozymes
(SANs)
are
a
class
of
with
metal
centers
that
mimic
the
structure
metalloenzymes.
Herein,
we
report
synthesis
Zn–N–C
SAN,
which
mimics
action
natural
carbonic
anhydrase
enzyme.
The
two-step
annealing
technique
led
to
content
more
than
18
wt
%.
Since
act
as
active
sites,
this
high
loading
resulted
in
superior
catalytic
activity.
Zn-SAN
showed
CO2
uptake
2.3
mmol/g
and
final
conversion
bicarbonate
91%.
was
converted
via
biomimetic
process
by
allowing
its
adsorption
catalyst,
followed
addition
catalyst
HEPES
buffer
(pH
=
8)
start
into
HCO3–.
Afterward,
CaCl2
added
form
white
CaCO3
precipitate,
then
filtered,
dried,
weighed.
Active
carbon
MCM-41
were
used
controls
under
same
reaction
conditions.
According
findings,
sequestration
capacity
42
mg
CaCO3/mg
Zn-SAN.
Some
amino
acids
(AAs)
binding
affinity
for
Zn
able
suppress
enzymatic
activity
blocking
centers.
This
strategy
detection
His,
Cys,
Glu,
Asp
limits
0.011,
0.031,
0.029,
0.062
μM,
respectively,
hence
utilized
quantifying
these
AAs
commercial
dietary
supplements.
ACS Applied Electronic Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 3, 2025
Zirconium-based
metal-organic
frameworks
(Zr-MOFs)
have
emerged
as
a
promising
class
of
crystalline
porous
materials,
attracting
significant
interest
in
the
field
proton
conduction
due
to
their
exceptional
chemical
stability,
structural
flexibility,
and
functional
tunability.
Notably,
proton-conducting
Zr-MOFs
show
immense
potential
for
diverse
advanced
technological
applications.
In
this
Spotlight
on
Applications
paper,
we
provide
an
overview
spotlight
recent
progress
utilization
exchange
membranes
membrane
fuel
cells
(PEMFCs),
light-responsive
systems
pumps,
sensors
formic
acid
detection.
Furthermore,
also
discussed
challenges,
future
prospects,
opportunities
promoting
application
Zr-MOFs.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(38), С. 50096 - 50114
Опубликована: Сен. 16, 2024
Defects
in
covalent
organic
frameworks
(COFs)
play
a
pivotal
role
determining
their
properties
and
performance,
significantly
influencing
interactions
with
adsorbates,
guest
molecules,
substrates
as
well
affecting
charge
carrier
dynamics
light
absorption
characteristics.
The
present
review
focuses
on
the
diverse
array
of
techniques
employed
for
characterizing
quantifying
defects
COFs,
addressing
critical
need
field
materials
science.
As
will
be
discussed
this
review,
there
are
basically
two
types
referring
either
to
missing
moieties
leaving
free
binding
groups
material
or
structural
imperfections
resulting
lower
crystallinity,
grain
boundary
defects,
incomplete
stacking.
summarizes
an
in-depth
analysis
state-of-the-art
characterization
techniques,
elucidating
specific
strengths
limitations
each
defect
type.
Key
examined
include
powder
X-ray
diffraction
(PXRD),
infrared
spectroscopy
(IR),
thermogravimetric
(TGA),
nuclear
magnetic
resonance
(NMR),
photoelectron
(XPS),
scanning
electron
microscope
(SEM),
transmission
microscopy
(STEM),
tunneling
(STM),
high
resolution
microcoe
(HRTEM),
gas
adsorption,
acid-base
titration,
advanced
methods,
computational
calculations.
We
critically
assess
capability
technique
provide
qualitative
quantitative
information
about
COF
offering
insights
into
complementary
nature
potential
synergistic
use.
last
section
main
concepts
provides
perspectives
future
development
overcome
existing
challenges.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 1, 2025
Interface
design
plays
a
pivotal
role
in
developing
high-performance
photocatalysts
for
NO
oxidation.
In
this
work,
hierarchical
rGO-integrated
NH2-MIL125(Ti)/TiO2
photocatalyst
was
constructed
using
combined
liquid-phase
and
solid-phase
microwave
synthesis
approach.
The
process
enabled
the
precise
deposition
of
NH2-MIL125(Ti)
on
graphene
oxide
(GO),
forming
strong
interfacial
bonds,
while
thermal
shock
(SMTS)
transformed
GO
into
rGO
induced
formation
TiO2
nanoparticles.
This
structure
established
an
efficient
electron
transport
pathway,
promoting
charge
separation
directional
transfer
to
activate
O2
generate
superoxide
radicals
(•O2–)
as
primary
reactive
species.
resulting
achieved
remarkable
oxidation
performance,
with
81.2%
removal
efficiency
NO3–
selectivity
98.5%
under
simulated
sunlight.
study
highlights
potential
microwave–driven
interface
engineering
innovative
environmentally
sustainable
applications.
