Energy Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 28, 2024
α–Fe
2
O
3
is
a
promising
photoanode
that
can
be
used
for
solar‐driven
photoelectrochemical
(PEC)
water
splitting.
However,
due
to
low
carrier
separation
efficiency
and
slow
oxidation
kinetics,
the
PEC
performance
of
Ti–Fe
still
severely
hindered.
Here,
novel
inorganic–organic
hybrid
composite
prepared
by
depositing
NH
–materials
institute
Lavoisier
(MIL)–53(FeCo)
cocatalyst
on
surface
using
solvothermal
method.
In
results,
it
shown
/NH
–MIL–53(FeCo)
has
high
photocurrent
density
(3.0
mA
cm
−2
at
1.23
V
vs
reversible
hydrogen
electrode
(RHE),
which
5.1
times
bare
,
initial
potential
also
undergoes
negative
change
about
100
mV.
The
significantly
enhanced,
charge
injection
increases
from
17.6%
68%
versus
RHE.
further
research,
suggested
excellent
may
attributed
an
increase
in
density,
prolonged
recombination
time,
exposed
reactive
sites.
this
study,
new
understanding
design
photoanodes
with
superior
based
metal
organic
framework
modification
provided.
Chemical Reviews,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 21, 2024
Photoelectrochemical
(PEC)
systems
are
essential
for
solar
energy
conversion,
addressing
critical
and
environmental
issues.
However,
the
low
efficiency
in
utilizing
photogenerated
charge
carriers
significantly
limits
overall
conversion.
Consequently,
there
is
a
growing
focus
on
developing
strategies
to
enhance
photoelectrode
performance.
This
review
systematically
explores
recent
advancements
PEC
system
modifications,
spanning
from
atomic
nanoscopic
levels
configuration
engineering.
We
delve
into
relationships
between
structures,
intrinsic
properties,
kinetics
of
carriers,
their
utilization.
Additionally,
we
propose
future
directions
perspectives
more
efficient
systems,
offering
valuable
insights
potential
innovations
field.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 29, 2024
Abstract
The
introduction
of
an
electrocatalyst
to
accelerate
the
kinetics
lithium
polysulfides
(LiPSs)
reduction/oxidation
is
beneficial
enhance
capacity
sulfur
cathode
and
inhibit
shuttling
effect
LiPSs.
However,
current
electrocatalysts
mainly
focus
on
metal‐based
active
sites
reduce
reaction
barriers,
there
remains
a
great
challenge
in
developing
light‐weighted
metal‐free
catalysts.
In
this
work,
1D
graphitic
carbon
nitride
nanorods
(g‐C
3
N
4
‐NRs)
with
carboxyl
(─COOH)
acylamide
(─CONH
2
)
functional
groups
are
designed
as
for
lithium‐sulfur
batteries
transport
Li
+
conversion
density
theory
(DFT)
calculations
prove
that
existence
─COOH
group
realizes
adsorption
LiPSs
accelerates
,
while
─CONH
energy
barrier
S
8
S.
addition,
situ
UV–vis
nucleation/dissociation
experiments
also
verify
g‐C
‐NRs
achieve
rapid
transformation
under
synergistic
action
groups.
Consequently,
based
‐NRs‐PP
separator
at
specific
700.3
mAh
g
−1
after
70
cycles
0.2
C,
0
°C.
This
work
provides
new
strategy
breaking
through
bottleneck
catalysts
high‐performance
batteries.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
17(6), С. 9440 - 9451
Опубликована: Янв. 31, 2025
Photoelectrochemical
(PEC)
water
splitting
for
hydrogen
production
is
a
promising
technology
sustainable
energy
generation.
In
this
work,
we
introduce
Nd
sites
boost
the
PEC
performance
of
Fe2O3
photoanodes
through
precise
gas-phase
cation
exchange
process,
which
substitutes
surface
Fe
atoms
with
Nd.
The
incorporation
significantly
enhances
charge
transfer
properties,
increases
carrier
concentration,
and
reduces
internal
resistance,
leading
to
substantial
increase
in
photocurrent
density
from
0.44
0.92
mA
cm-2
at
1.23
VRHE.
Further
enhancement
catalytic
activity
was
achieved
by
depositing
NiCo(OH)x
layer
1.15
VRHE
were
obtained.
Theoretical
calculations
corroborate
these
experimental
results,
revealing
that
doping
narrows
bandgap,
improves
separation
efficiency,
lowers
reaction
potential
barrier,
thereby
accelerating
oxidation
kinetics.
These
findings
underscore
effectiveness
targeted
metallic
element
overcoming
intrinsic
limitations
Fe2O3,
providing
viable
pathway
developing
high-performance
systems
efficient
production.
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 7, 2025
Constructing
patterned
film
photoanodes
with
economizing
raw
chemicals
but
enhancing
photoelectrochemical
(PEC)
performance
is
attractive
for
practical
applications.
However,
simultaneously
optimizing
light
scattering
and
interfacial
charge
transfer
through
plasmonic
enhancement
remains
challenging.
Herein,
we
developed
a
novel
photoanode
featuring
Au
grids
nanometer-thick
CdSe
layer
(Au
grid-CdSe)
well-organized
heterointerfaces,
fabricated
via
facile
colloidal
topochemical
strategy.
This
design
leverages
the
synergistic
coupling
between
plasmons
excitons
in
heteropatterned
films.
The
underlying
serve
dual
functions:
as
an
electron
collector
reflector.
Their
highly
ordered
Bragg
structure
effectively
scatters
incident
into
ultrathin
layer.
Furthermore,
CdCl2
surface
passivation
of
Au(grid)-CdSe
photoanode,
based
on
this
unique
absorption/reflector
architecture,
yielded
photocurrent
density
4.51
mA
cm-2,
representing
significant
enhancement.
Compared
to
similarly
prepared
Au-CdSe
heterofilms,
passivated
films
exhibited
2.0-fold
higher
PEC
hydrogen
evolution
performance,
maintained
excellent
stability
over
26
h,
reduced
consumption
by
32%.
strategy
offers
pathway
improving
semiconductor-based
optoelectronic
devices.
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 26, 2025
Abstract
Atomic‐level
catalysts
are
extensively
applied
in
heterogeneous
catalysis
fields.
However,
it
is
a
general
but
ineluctable
issue
that
active
metal
atoms
may
migrate,
aggregate,
deactivate,
or
leach
during
reaction
processes,
suppressing
their
catalytic
performances.
Designing
superior
intrinsic‐structural
stability
of
atomic‐level
with
high
activity
and
revealing
dynamic
structure
evolution
vital
for
wide
applications
complex
reactions
harsh
conditions.
Herein,
high‐stable
Pd─Cu
dual‐atom
PdN
3
─CuN
coordination
engineered
via
strong
chelation
Cu
2+
‐ions
electron
pairs
from
palladium‐source,
achieving
the
highest
turnover
frequency
under
lowest
overpotential
Cr(VI)
electrocatalytic
reduction
detection
strong‐acid
electrolytes.
In
situ
X‐ray
absorption
fine
spectra
reveal
“spring‐effect”
Cu─Pd
Cu─N
bonds
reversibly
stretched
potential
changes
can
be
recovered
at
0.6
V
regeneration.
The
modulated
electron‐orbit
coupling
effect
prevents
Cu‐atoms
aggregating
as
metallic
nanoparticles.
dual‐atoms
interact
two
O
H
2
CrO
4
,
forming
stable
bridge
configurations
transferring
electrons
to
promote
Cr─O
bond
dissociation,
which
prominently
decreases
energy
barriers.
This
work
provides
feasible
route
boost
robustness
single‐atoms
easily
affected
by
conditions
sustainable
applications.
