ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
In
this
study,
an
ionic
liquid–ethanol
interface
strategy
is
proposed
to
synthesize
NH2-MIL-101(Fe)
nanocrystals
at
room
temperature.
The
as-synthesized
exhibit
small
crystal
sizes,
abundant
ligand
defects,
and
unsaturated
metal
sites.
present
superior
catalytic
activity
for
the
cycloaddition
reaction
of
CO2
mild
conditions
(room
temperature
1
bar
pressure),
much
higher
than
NH2-MIL-101
(Fe)
microcrystals
synthesized
by
conventional
solvothermal
method.
conversion
propylene
oxide
catalyzed
achieves
a
99%
yield
within
2.5
h,
accompanied
generation
rate
carbonate
production
per
gram
catalyst
(Rcarbonate)
52.8
mmol
g–1
h–1.
contrast,
system
employing
shows
lower
19.28%
10.28
were
further
used
treatment
simulated
industrial
flue
gas
with
volume
ratio
N2/CO2
=
85:15.
results
show
efficient
ambient
pressure,
even
relatively
low
concentrations.
This
work
not
only
offers
facile,
energy-consumed,
environmentally
benign
method
fabrication
MOF
nanostructures
but
also
provides
high-performance
systems
fixation
separation.
Abstract
The
persistent
threats
posed
by
toxic
chemical
warfare
agents
(CWAs)
such
as
mustard
gas
(bis(2‐chloroethyl)
sulfide,
HD)
and
bacterial
contaminants
demand
the
development
of
innovative,
sustainable
mitigation
strategies.
Photocatalytic
processes
that
generate
reactive
oxygen
species
(ROS)
offer
a
promising
dual‐functional
approach
for
both
detoxification
antibacterial
defense.
In
this
study,
two
structurally
analogous
covalent
organic
frameworks
(COFs),
BPY‐COF
BD‐COF,
are
synthesized
using
benzotrithiophene
donor
unit
paired
with
bipyridine
biphenyl,
respectively.
These
COFs
exhibit
high
crystallinity,
broad‐spectrum
light
absorption,
efficient
charge
carrier
transport,
demonstrating
superior
performance
due
to
incorporation
heteroatoms.
achieved
ultrafast
simulant
2‐chloroethyl
ethyl
sulfide
(CEES)
half‐life
35
min
100%
selectivity
sulfoxide
(CEESO)
under
white
LED
light,
outperforming
BD‐COF.
Additionally,
electrospun
composite
fibers
containing
40
wt.%
maintained
comparable
CEES
degradation
rates
exhibited
over
99%
efficiency
against
Escherichia
coli
Bacillus
subtilis
within
60
min.
findings
highlight
potential
multifunctional
photocatalyst
integrated
applications
in
defense,
addressing
critical
challenges
public
health
safety.
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.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 19, 2025
Abstract
Stimuli‐responsive
programmable
materials
exhibit
remarkable
potential
for
smart
applications
due
to
their
ability
attain
multi‐stable
states
through
structural
adaptability
upon
guest
molecule
removal
or
exchange.
However,
achieving
designability
remains
challenging,
particularly
in
maintaining
the
crystallinity
single‐crystal‐to‐single‐crystal
(SCSC)
transformations
and
ensuring
tunable
activation.
In
this
study,
it
is
demonstrated
that
SCSC
between
an
empty
monoclinic
framework
triclinic
can
be
manipulated
stimuli
combining
various
activations
molecules.
Reversible
switching
facilitated
by
MeOH
adsorption
heating‐induced
transformations,
whereas
H
2
O
alone
cannot
directly
induce
transformation.
Instead,
must
first
adsorb
N,N
‐Dimethylformamide
(DMF)
molecules
form
a
new
DMF‐adsorbed
subsequently
undergoes
mild
activation
yield
framework.
These
interconvertible
frameworks
differ
photothermal
conversion
performance
selectively
cause
discoloration
of
CuSO
4
·5H
dehydration.
Photothermal
temperatures
ultimately
transformation
framework,
attaining
up
640
K
within
15
s
under
808
nm
laser
irradiation
(1.7
W
cm
−2
).
Potential
energy
calculations
single‐crystal
data
reveal
driven
varying
affinities
pore
environments
different
Abstract
Aromatic
amines
as
important
intermediates
for
chemical
production
have
applications
in
industry
such
plastics,
rubber
processing,
herbicides,
dyes,
and
pharmaceuticals.
Catalytic
hydrogenation
of
nitroarenes
is
the
main
synthetic
method
producing
aromatic
amines.
This
work
designs
synthesizes
a
highly
efficient
selective
catalytic
catalyst
(Pt‐AlOOH/C)
using
hydrothermal
impregnation
methods.
The
Pt‐AlOOH/C
catalysts
with
different
loadings
(1.0,
0.1,
0.05
wt%)
are
successfully
obtained
by
changing
amount
Pt
precursor.
results
show
that
1%Pt‐AlOOH/C
had
best
performance,
achieving
97.6%
conversion
4‐nitroacetophenone
96.0%
selectivity
to
p
‐aminophenone
under
following
reaction
conditions
0.5
h,
25
°C,
pressure
2.0
MPa.
one
─NO
2
also
provides
excellent
activity
high
being
hydrogenated
other
(for
example,
2‐chloronitrobenzene,
2‐bromonitrobenzene,
‐nitrophenol,
1,3‐dinitrobenzene,
‐nitrobenzonitrile)
reactions
quite
mild
conditions.
characterization
nanoparticles
dispersion
uniformly
loaded
on
AlOOH/C
support.
Chemical Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
Recent
advances
and
outlook
of
porous
organic
cage-based
materials
(pristine
POCs,
POC
composites
derivatives)
in
the
field
energy
applications,
including
photocatalysis,
electrocatalysis,
separation,
batteries
proton
conductivity.
