ACS Applied Nano Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 26, 2024
Utilizing
carbon
dioxide
(CO2)
as
a
primary
C1
source
and
transforming
it
into
valuable
compounds
offer
viable
approach
to
tackle
energy
environmental
concerns.
The
incorporation
of
metal
nanoparticles
template
frameworks
create
catalytic
hybrid
materials
provides
an
ideal
promising
for
integrated
CO2
capture
conversion.
Anchoring
highly
dispersed
silver
(AgNPs)
on
functional
coordination
polymer
gels
(CPGs)
efficient
heterogeneous
catalysts
the
carboxylative
cyclization
propargyl
alcohols
with
is
fascinating
but
challenging
prospect.
Herein,
straightforward
in
situ
reduction
method
demonstrated
anchor
well-dispersed
AgNPs
triazine-based
CPG
(Fe_MG)
scaffolds.
A
nitrogen-rich
triazine
moiety
actively
helps
nucleation
growth
Ag
within
network.
Catalytic
studies
showed
that
presence
Ag@Fe_MG
allowed
excellent
conversion
(∼99%)
2-methylbut-3-yn-2-ol
corresponding
alkylene
cyclic
carbonate
24
h
at
room
temperature.
as-synthesized
catalyst
not
only
aids
chemical
fixation
also
facilitates
three-component
coupling
reaction
uses
aldehyde,
terminal
alkyne,
secondary
amine
produce
amines.
impressive
group
tolerance
different
substrate
scopes
reusability,
well
maintaining
its
activity
without
any
significant
decrease
during
cycles,
dictate
efficiency
catalyst.
Therefore,
our
study
demonstrates
judicious
selection
templates
fabricate
composites
nanoparticles,
which
serve
multicomponent
reactions.
Angewandte Chemie International Edition,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 9, 2025
Photo/electro-catalytic
CO2
reduction
into
high-value
products
are
promising
strategies
for
addressing
both
environmental
problems
and
energy
crisis.
Duo
to
their
advantageous
visible
light
absorption
ability,
adjustable
optic/electronic
properties,
definite
active
center,
post-modification
capability,
excellent
stability,
porphyrin-based
covalent
organic
frameworks
(COFs)
have
emerged
as
attractive
photo/electro-catalysts
towards
reduction.
In
this
review,
the
research
progress
of
COFs
photo/electro-catalytic
is
summarized
including
design
principles,
catalytic
performance,
reaction
mechanism.
addition,
review
also
presents
some
challenges
prospects
application
in
reduction,
laying
base
fundamental
efforts.
Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
A
novel
CdS@NiV-LDH
heterojunction
with
an
optimized
electric
field
microenvironment
and
reaction
has
been
constructed
for
the
photocatalytic
reduction
of
CO
2
to
tunable
green
syngas
by
rationally
modulating
PCET
process.
Chemical Science,
Год журнала:
2024,
Номер
15(39), С. 16259 - 16270
Опубликована: Янв. 1, 2024
Rational
design
of
a
TFPB-TRZ
COF
bearing
the
small
and
heteroatom-rich
organic
node
TRZ
(triazole
moiety)
which
facilitates
stabilization
CO
intermediate
at
imine
(–CN–)
site
via
electron
donation
from
an
N-hetero
species.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 10, 2025
Abstract
Quantum
size
effects
and
interfacial
dimensional
interactions
enable
nanometer‐scale
hierarchical
heterostructures
to
adjust
band
structures
by
energy
level
discretization,
impurity
formation,
inversion,
allowing
for
controlled
carrier
localization
directional
relaxation.
These
unique
characteristics
show
great
potential
applications
in
ferroelectrics,
optoelectronics,
capacitors,
sensors.
Yet,
optimizing
performance
fine‐tuning
the
properties
of
nanoscale
systems,
especially
composition,
remains
a
considerable
challenge.
Here
dimensionally
confined
synthesis
is
reported
through
pyrolysis‐based
metal‐organic
framework‐on‐metal‐organic
framework
(MOF‐on‐MOF)
strategy,
resulting
continuous
metal‐carbon
carbon‐oxide
interfaces
below
50
nm.
Off‐axis
electron
holography
theoretical
calculations
are
utilized
visualize
dynamic
conversion
between
localized
free
electrons,
as
well
relaxation
processes
high‐density
magnetic
coupling
at
nanoscale.
phenomena
rarely
observed
micron‐scale
or
non‐hierarchical
heterostructures.
improvements
lead
significantly
enhanced
dielectric
properties,
efficient
interaction
with
high‐frequency
electromagnetic
(EM)
fields,
indicated
loss
bandwidth
covering
full
C‐band.
Future
work
will
explore
constructing
these
targeted
materials
examine
new
such
topological
behavior,
ferrimagnetism,
giant
magnetoresistance,
sustainability
optoelectronic
technology.
Abstract
Redox‐active
covalent
organic
frameworks
(COFs)
with
metal
binding
sites
are
increasingly
recognized
for
developing
cost‐effective,
eco‐friendly
electrodes
in
rechargeable
energy
storage
devices.
Here,
we
report
a
microwave‐assisted
synthesis
and
characterization
of
triazine‐based
polyimide
COF
that
features
dual
redox‐active
(−C=O
from
pyromellitic
−C=N−
triazine)
COF@CNT
nanocomposites
(
COF@CNT‐X
,
where
X=10,
30,
50
wt
%
NH
2
‐MWCNT)
formed
through
linking
amino‐functionalized
multiwalled
carbon
nanotubes.
These
composites
evaluated
as
cathode
materials
the
sodium‐ion
batteries
(SIBs).
The
amine
functionalization
renders
bond
between
CNT,
improving
electronic
conductivity,
structural
rigidity,
long‐term
stability.
interfacial
growth
layers
on
CNTs
increases
accessible
sites,
enhancing
sodium
diffusion
kinetics
during
sodiation/desodiation.
COF@CNT‐50
composite
exhibits
outstanding
Na
+
ion
performance
(reversible
capacity
164.3
mAh
g
−1
at
25
mA
)
excellent
stability
over
1000
cycles
ambient
temperature.
At
elevated
temperature
(65
°C),
it
also
maintains
good
cycle
Ex
situ
XPS
analysis
confirms
importance
active
mechanism.
Density
functional
theory
(DFT)
calculations
reveal
insights
into
corresponding
energies
structure,
elucidating
experimental
voltage
profile.
The
conversion
of
toluene
into
high-value
products
without
generating
undesired
CO2
remains
a
critical
challenge.
Selective
oxidation
under
visible
light
irradiation
has
emerged
as
promising
solution.
This
review
offers
comprehensive
interpretation
photocatalytic
transformations
in
heterogeneous
oxidation.
We
start
by
outlining
the
basic
mechanism
C–H
bond
activation
and
provide
an
overview
reactive
oxygen
species
(ROS)
within
systems.
Subsequently,
we
summary
strategies
that
have
been
developed
to
enhance
selectivity
system.
Following
this,
advanced
characterization
techniques
density
functional
theory
(DFT)
calculations
are
discussed
for
understanding
structure-performance
relationship
photocatalysts
mechanisms
underlying
processes.
Finally,
put
forward
detailed
discussion
current
challenges
potential
directions
future
research,
with
aim
offering
valuable
insights
this
emerging
field.
believe
will
not
only
spark
greater
creativity
optimizing
but
also
offer
designing
other
Angewandte Chemie,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 9, 2025
Abstract
Photo/electro‐catalytic
CO
2
reduction
into
high‐value
products
are
promising
strategies
for
addressing
both
environmental
problems
and
energy
crisis.
Duo
to
their
advantageous
visible
light
absorption
ability,
adjustable
optic/electronic
properties,
definite
active
center,
post‐modification
capability,
excellent
stability,
porphyrin‐based
covalent
organic
frameworks
(COFs)
have
emerged
as
attractive
photo/electro‐catalysts
towards
reduction.
In
this
review,
the
research
progress
of
COFs
photo/electro‐catalytic
is
summarized
including
design
principles,
catalytic
performance,
reaction
mechanism.
addition,
review
also
presents
some
challenges
prospects
application
in
reduction,
laying
base
fundamental
efforts.
