Energy Technology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 14, 2024
The
single‐crystal
thin
films
are
more
conducive
to
an
in‐depth
understanding
of
the
intrinsic
mechanism
photocatalytic
reaction.
Herein,
BiVO
4
thin‐films
prepared
on
(001)‐oriented
yttrium‐stabilized
zirconia
(YSZ
(001))
substrates
using
pulsed
laser
deposition
at
a
different
energy
density
42–102
mJ
cm
−2
.
results
X‐Ray
diffraction
reveal
that
samples
all
have
monoclinic
scheelite
structure
and
grow
epitaxially
along
b‐axis
orientation.
With
increase
in
power
density,
peak
positions
Bi
4f,
V
2p,
O
1s
photoelectron
spectroscopy
shift
toward
higher
binding
energies,
visible
light
absorption
ability
also
weakens.
film
42
exhibits
high
activity
good
stability
degradation
Rhodamine
B
(RhB).
trapping
experiments
prove
holes
(h
+
)
hydroxyl
radicals
(·OH)
main
active
species.
Advanced Optical Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 25, 2024
Abstract
The
efficiency
of
solar‐fuel
conversion
in
photoelectrochemical
(PEC)
systems
is
hindered
by
significant
losses
photons
and
photocarriers
within
the
photoelectrodes.
This
study
introduces
an
innovative
ITO@In
2
S
3
core‐shell
nanowire
structure
designed
to
overcome
these
challenges
through
cutting‐edge
materials
engineering
sophisticated
simulation
techniques.
Optical
modeling
finite
element
simulations
highlight
conflict
between
photocarrier
generation
collection
planar
In
thin
films
demonstrate
how
geometry
can
significantly
enhance
light
absorption.
developed
photoanodes
achieve
a
photocurrent
11.3
mA
cm
−
at
1.23
V
versus
RHE,
which
nearly
five
times
greater
than
that
ITO/In
films.
Characterization
techniques,
including
UV–vis
absorption
charge
separation
measurements,
confirm
enhanced
improved
carrier
facilitated
broadening
optical
range
reducing
transport
distances.
research
not
only
deepens
understanding
dynamics
thin‐film
photoelectrodes
but
also
paves
way
for
development
more
efficient
technologies
solar
fuel
conversion.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 15, 2024
Abstract
Photoelectrocatalysis
has
the
capability
to
utilize
solar
energy
produce
hydrogen
and
valuable
chemicals;
however,
their
conversion
efficiency
remains
reach
practical
thresholds.
Here,
a
rapid‐ramping
annealing
strategy
is
reported
synthesize
nanoporous
Mo‐doped
bismuth
vanadate
(MBVO)
photoanodes
with
(001)‐preferred
orientation.
This
approach
leverages
enhanced
carrier
transport
along
crystallographic
[001]
direction,
optimizing
bulk
photoelectrical
properties
of
MBVO
photoanodes.
By
substituting
surface
oxygen
evolution
reaction
glycerol
oxidation
reaction,
photoconversion
significantly
boosted,
reaching
photocurrent
density
7.45
mA
cm
−2
at
1.23
V
versus
RHE
an
incident
photon‐to‐current
≈100%
for
generation,
accompanied
by
production
value‐added
products
in
high
rate
(≈1700
mmol
m
h
−1
total)
total
Faradaic
up
96%.
These
results
shed
light
on
construction
photoelectrocatalysis
systems
demonstrating
potential
bulk‐phase
engineering
coupled
design.
Energy Technology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 14, 2024
The
single‐crystal
thin
films
are
more
conducive
to
an
in‐depth
understanding
of
the
intrinsic
mechanism
photocatalytic
reaction.
Herein,
BiVO
4
thin‐films
prepared
on
(001)‐oriented
yttrium‐stabilized
zirconia
(YSZ
(001))
substrates
using
pulsed
laser
deposition
at
a
different
energy
density
42–102
mJ
cm
−2
.
results
X‐Ray
diffraction
reveal
that
samples
all
have
monoclinic
scheelite
structure
and
grow
epitaxially
along
b‐axis
orientation.
With
increase
in
power
density,
peak
positions
Bi
4f,
V
2p,
O
1s
photoelectron
spectroscopy
shift
toward
higher
binding
energies,
visible
light
absorption
ability
also
weakens.
film
42
exhibits
high
activity
good
stability
degradation
Rhodamine
B
(RhB).
trapping
experiments
prove
holes
(h
+
)
hydroxyl
radicals
(·OH)
main
active
species.
