Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
Abstract
The
degradation
of
fluorinated
refrigerants,
known
for
their
highly
stable
carbon‐fluorine
(C─F)
bonds,
poses
significant
environmental
and
technical
challenges.
This
review
addresses
these
challenges
by
analyzing
two
core
mechanisms:
molecular
polarization
(MP)
free
radical
attack
(FRA),
exploring
applications
in
thermal
catalytic
photocatalytic
processes.
MP
redistributes
electron
density
to
weaken
C─F
facilitating
adsorption
bond
cleavage,
while
involves
reactive
species
that
directly
break
chemical
bonds.
However,
both
mechanisms
have
limitations:
alone
may
lack
the
kinetic
drive
dissociation,
radical‐based
methods
often
suffer
from
low
selectivity,
short
lifetimes,
formation
toxic
intermediates.
section
on
discusses
how
elevated
temperatures
enhance
cleavage
through
MP,
addressing
accelerating
dissociation.
part
focuses
role
light‐activated
processes
generating
radicals
breaking,
with
an
emphasis
visible
ultraviolet
light‐driven
reactions.
concludes
potential
hybrid
systems
combine
processes,
providing
insights
into
complementary
use
persistent
compounds.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(16), P. 12529 - 12540
Published: Aug. 6, 2024
Upgrading
single
S-scheme
heterojunctions
to
multi-S-scheme
ones
through
implanting
another
component
provides
a
promising
means
of
simultaneously
optimizing
the
charge
transport
dynamics
and
surface
reaction
kinetics,
which,
however,
is
challenged
by
uncontrollable
loading
position
third
component.
Herein,
component-directed
growth
strategy
implemented
for
deliberate
deposition
ZnIn2S4
onto
diverse
locations
In2O3/CdS,
constructing
twin
triple
heterojuctions
with
distinct
transfer
pathways.
The
photocatalytic
performances
as-synthesized
ternary
in
CO2
reduction
coupled
H2O
oxidation
strongly
correlate
location
ZnIn2S4.
selective
coating
CdS
expedites
separation,
ensures
large-area
exposure
In2O3
smooth
oxidation,
modulates
energy
barriers
promoted
CO2-to-CO
transformation
while
suppressing
side
H2
evolution,
raises
electron
density
proton
supply
methanation.
Consequently,
In2O3/CdS@ZnIn2S4
achieves
optimum
activities
selectivities
CO
CH4
production,
along
nearly
stoichiometric
O2
evolution.
This
work
not
only
offers
valuable
insights
rational
design
three-component
heterojunction
photocatalysts
multiple
pathways
but
also
opens
up
fresh
avenue
precisely
regulate
enhancing
overall
efficiency
photoredox
catalysis.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(13), P. 10204 - 10213
Published: June 21, 2024
Precisely
engineering
point
defects
holds
promise
for
the
development
of
state-of-the-art
photocatalysts
CO2
conversion.
This
study
demonstrates
controllable
creation
nitrogen
vacancies
(VNs)
in
centers
heptazine
rings
graphitic
carbon
nitrides
(g-C3N4)
via
a
photochemical-assisted
etching
strategy.
Spectroscopic
analyses
and
theoretical
simulations
elucidate
photochemical
process
to
hydrogenate
situated
at
center
g-C3N4
ring
then
release
an
ammonia
molecule,
accompanied
by
photooxidation
sacrificial
agents.
The
catalyst
with
optimal
VNs
concentration
achieves
CO
generation
rate
35.2
μmol
g–1
h–1
nearly
100%
selectivity,
comparable
performance
reported
materials.
remarkably
improved
photoactivity
is
due
adjustments
electronic
structures
midgap
states
delocalized
π
electron
cloud
created
12-membered
surrounding
VN,
which
maximizes
light-harvesting
efficiencies
suppresses
recombination
photogenerated
electrons
holes.
also
activates
neighboring
catalytic
reduce
energy
barrier
reduction.
work
provides
good
design
concept
regulate
activity
defects.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 10, 2024
In
the
context
of
reshaping
energy
pattern,
designing
and
synthesizing
high-performance
noble
metal-free
photocatalysts
with
ultra-high
atomic
utilization
for
hydrogen
evolution
reaction
(HER)
still
remains
a
challenge.
streamlined
synthesis
process,
in-situ
single
atom
anchoring
is
performed
in
parallel
HER
by
irradiating
precursory
defect-state
CdS/Co
suspension
(Co-DCdS-Ss)
system
under
simulated
sunlight
single-atom
Co
photocatalyst
(Co5:DCdS)
exhibits
further
improved
catalytic
performance
(60.10
mmol
g
