Materials,
Год журнала:
2024,
Номер
17(19), С. 4862 - 4862
Опубликована: Окт. 2, 2024
A
rapid
and
feasible
approach
was
used
to
develop
visible-light-driven-type
Dion–Jacobson
perovskites
by
the
modification
of
RbLaTa2O7
host
(RbLTO)
with
FeCl2
through
molten
salt
route.
X-ray
diffraction
(XRD)
characterization
showed
that
FeCl2-modified
layered
perovskite
(e.g.,
Fe@RbLTO)
preserved
its
lamellar
structure.
SEM
micrographs
confirmed
morphology
both
RbLTO
Fe@RbLTO
materials.
The
UV-Vis
spectra
illustrated
a
significant
red
shift
absorption
edge
after
Fe2+
modification,
band
gap
energy
reducing
from
3.88
1.82
eV.
H2-TPR
measurements
emphasized
anchorage
species
located
on
surface
as
well
in
interlayer
space.
synthesized
materials
were
valorized
photocatalysts
for
degradation
phenol
under
Xe
lamp
simulated
solar
irradiation
(SSL)
conditions.
photocatalytic
reaction
follows
first-order
kinetics.
By-product
formations
during
(Ph)
identified
quantified
using
high-performance
liquid
chromatography
(HPLC).
Hydroquinone,
1,2-dihydroxi-benzene,
benzoquinone,
pyrogallol
main
Ph
intermediates.
Pristine
exhibited
conversion
value
about
17%
an
lamp,
while
≈
11%
achieved
SSL.
substantial
increase
selectivity
perceived
modification.
demonstrated
superior
performances
(43%
91%
aromatic
intermediate
compounds)
at
optimized
stability
photocatalyst
when
exposed
also
assessed.
These
results
suggest
existence
iron
perovskite’s
is
responsible
improved
redox
properties
Fe@RbLTO,
resulting
valuable
material
environmental
applications.
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Янв. 15, 2025
As
the
global
quest
for
sustainable
energy
keeps
rising,
exploring
novel
efficient
and
practical
photocatalysts
remains
a
research
industrial
urge.
Particularly,
metal
organic
frameworks
were
proven
to
contribute
various
stages
of
carbon
cycle,
from
CO2
capture
its
conversion.
Herein,
we
report
photo-methanation
activity
three
isostructural,
nickel-based
incorporating
additional
niobium,
iron,
aluminum
sites,
having
demonstrated
exceptional
abilities
thin
air
in
previous
reports.
The
niobium
version
exhibits
highest
performance,
with
CH4
conversion
rate
order
750–7500
µmol*gcatalyst−1*h−1
between
180
°C
240
°C,
achieving
97%
selectivity
under
light
irradiation
atmospheric
pressure.
in-depth
characterization
this
framework
before
after
catalysis
reveals
occurrence
an
in-situ
restructuring
process,
whereas
active
surface
species
are
formed
photocatalytic
conditions,
thus
providing
comprehensive
structure-performance
correlations
development
photocatalysts.
This
study
correlates
structure
photohydrogenation
performance
series
isostructural
Ni-based
MOFs.
Comparative
situ
restructuring,
yielding
different
sites.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 22, 2025
Abstract
The
excessive
release
of
CO
2
from
fossil
fuel
combustion
has
disrupted
the
carbon
cycle,
leading
to
elevated
greenhouse
gas
levels.
Converting
into
value‐added
chemicals
like
CH
4
and
C
H
not
only
offers
a
sustainable
alternative
fuels
but
also
helps
mitigate
emissions.
However,
producing
high‐energy
hydrocarbons
involves
complex
electron
proton
coupling,
presenting
significant
kinetic
challenges.
Photothermal
catalysis,
which
harnesses
solar
energy
in
light
heat,
emerges
as
promising
method
for
efficient
conversion
hydrocarbons.
This
process
reduces
thermodynamic
barriers
protonation
by
enabling
rapid
transfer
through
thermal
assistance.
development
photothermal
catalysts
capable
absorbing
light,
generating
electron–hole
pairs,
facilitating
redox
reactions
is
crucial
enhancing
efficiency
selectivity.
review
highlights
importance
catalyst
design,
reaction
conditions,
reactor
configuration,
addresses
lack
comprehensive
reviews
on
synergistic
approach
catalysis.
By
focusing
precise
design
photogenerated
heat
mechanisms,
this
aims
advance
field,
emphasizing
its
potential
promote
carbon‐neutral
future.
