Abstract
Photoelectrochemical
(PEC)
water
splitting
represents
an
attractive
strategy
to
realize
the
conversion
from
solar
energy
hydrogen
energy,
but
severe
charge
recombination
in
photoanodes
significantly
limits
efficiency.
Herein,
a
unique
BiVO
4
(BVO)
nanobowl
(NB)
heterojunction
photoanode,
which
consists
of
[001]‐oriented
BiOCl
underlayer
and
BVO
nanobowls
containing
embedded
nanocrystals,
is
fabricated
by
nanosphere
lithography
followed
situ
transformation.
Experimental
characterizations
theoretical
simulation
prove
that
morphology
can
effectively
enhance
light
absorption
while
reducing
carrier
diffusion
path.
Density
functional
theory
(DFT)
calculations
show
tendency
electron
transfer
BiOCl.
The
forms
compact
type
II
with
BVO,
favoring
through
substrate.
Furthermore,
nanoparticles
form
bulk
facilitate
transfer.
Consequently,
dual
heterojunctions
engineered
BVO/BiOCl
NB
photoanode
exhibits
PEC
performance
toward
oxidation
excellent
separation
efficiency
95.5%,
remarkable
photocurrent
density
3.38
mA
cm
−2
at
1.23
V
versus
reversible
electrode,
fourfold
enhancement
compared
flat
counterpart.
This
work
highlights
great
potential
integrating
engineering
fabricating
high‐performance
photoelectrodes
efficient
conversion.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(22), С. 8340 - 8352
Опубликована: Май 17, 2024
In
addressing
the
challenging
quest
for
an
efficient
electrocatalyst
in
electrochemical
water
splitting,
we
demonstrate
Fe-doped
NiO
nanosheet
array
anchored
on
nickel
foam
synthesized
via
a
two-step
process.
Demonstrating
exceptional
performance
alkaline
electrolyte,
FeNiO
catalysts
exhibit
oxygen
evolution
reaction
with
low
potential
of
1.52
V
vs
RHE
and
urea
oxidation
1.32
@
10
mA/cm2.
The
bifunctional
electrolyzer
generates
mA/cm2
current
at
1.95
1.59
electrolysis
ambient
temperature.
Promisingly,
catalyst
based
hydrogen
industrial-scale
density
400
cell
voltage
just
1.91
concentrated
electrolyte
elevated
temperature
(80
°C)
due
to
dimensionally
stable
robust
behavior
self-supported
catalyst.
activation
energy
is
found
be
52
kJ/mol.
present
also
300
4
M
KOH
50
°C
more
than
20
h.
synergy
induced
by
Fe
doping
into
activates
catalytic
sites,
expediting
charge
transfer
kinetics.
research
report
highlights
as
practical
cost-effective
approach
green
production
splitting.
Energies,
Год журнала:
2025,
Номер
18(5), С. 1231 - 1231
Опубликована: Март 3, 2025
The
marine
industry,
being
the
backbone
of
world
trade,
is
under
tremendous
pressure
to
reduce
its
environmental
impact,
mainly
driven
by
reliance
on
fossil
fuels
and
significant
greenhouse
gas
emissions.
This
paper
looks
at
hydrogen
as
a
transformative
energy
vector
for
maritime
logistics.
It
delves
into
methods
production,
innovative
propulsion
technologies,
advantages
adopting
hydrogen.
analysis
extends
economic
feasibility
this
transition
undertakes
comparative
evaluation
with
other
alternative
emphasize
distinct
strengths
weaknesses
Furthermore,
based
case
studies
pilot
projects,
study
elaborates
how
can
be
used
in
real-world
contexts,
concluding
that
combination
ammonia
green
hybrid
systems
presents
increased
flexibility,
serving
primary
fuel
while
enhances
efficiency
powers
auxiliary
systems.
approach
represents
promising
solution
reducing
shipping
sector’s
carbon
footprint,
enabling
industry
achieve
greater
sustainability
maintaining
scalability
essential
global
trade.
Overall,
work
bridges
gap
between
theoretical
concepts
actionable
solutions,
therefore
offering
valuable
insights
decarbonization
sector
achieving
goals.
Chemical Communications,
Год журнала:
2023,
Номер
59(49), С. 7623 - 7626
Опубликована: Янв. 1, 2023
A
facile
strategy
was
developed
for
one-step
synthesis
of
yttrium(Y)-doped
cobalt-based
metal-organic
framework
(CoY-MOF)
nanosheet
arrays.
It
demonstrated
that
in
situ
doping
with
a
low
content
Y
can
tailor
the
electronic
structure
MOF
structures,
thereby
improving
their
electrocatalytic
performance
both
hydrogen
evolution
and
glycerol
oxidation
reactions.
Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Ноя. 9, 2023
Abstract
Cuprous
oxide
(Cu
2
O)
is
a
promising
material
for
photoelectrochemical
water
splitting
(PEC),
and
increasing
its
photovoltage
the
key
to
creating
efficient
overall
PEC
water-splitting
devices.
Previous
reports
are
mostly
focused
on
optimizing
energy
band
alignment
between
Cu
O
n-type
buffer
layer
improve
of
photocathodes.
However,
protective
often
ignored.
In
this
work,
photocathodes
with
single
(Ga
3
)
dual
layers
/ZnGeO
x
fabricated,
their
performances
compared.
Results
show
that
after
inserting
second
(ZnGeO
),
onset
potential
photocathode
increases
by
0.16
V.
Operando
electrochemical
impedance
spectroscopy
measurements
analysis
energy-level
diagrams
each
an
level
gradient
Ga
TiO
created
when
ZnGeO
introduced,
which
eliminates
barrier
at
interface
/TiO
improves
photocathode.
Our
work
provides
effective
approach
photoelectrodes
solar
introducing
layers.
Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Сен. 7, 2023
Despite
considerable
research
efforts
on
photoelectrochemical
water
splitting
over
the
past
decades,
practical
application
faces
challenges
by
absence
of
efficient,
stable,
and
scalable
photoelectrodes.
Herein,
we
report
a
metal-halide
perovskite-based
photoanode
for
oxidation.
With
planar
structure
using
mesoporous
carbon
as
hole-conducting
layer,
precious
metal-free
FAPbBr3
photovoltaic
device
achieves
9.2%
solar-to-electrical
power
conversion
efficiency
1.4
V
open-circuit
voltage.
The
architecture
successfully
applies
to
build
monolithic
with
absorber,
carbon/graphite
conductive
protection
layers,
NiFe
catalyst
layers
delivers
ultralow
onset
potential
below
0
versus
reversible
hydrogen
electrode
high
applied
bias
photon-to-current
8.5%.
Stable
operation
exceeding
100
h
under
solar
illumination
applying
ultraviolet-filter
protection.
photothermal
investigation
verifies
performance
boost
in
perovskite
effect.
This
study
is
significant
guiding
development
material-based
photoelectrodes
fuel
applications.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(11)
Опубликована: Янв. 28, 2024
Abstract
Bias‐free
solar
water‐splitting
technology
is
considered
an
ideal
solution
to
address
the
energy
crisis,
as
it
can
efficiently
convert
hydrogen
and
has
made
groundbreaking
progress.
Particularly,
photovoltaic
(PV)‐driven
electrolysis
systems
exhibit
promising
potential
for
enhanced
conversion
efficiency.
Nonetheless,
majority
of
research
on
PV‐driven
remains
confined
laboratory
scale,
with
industrial‐scale
application
still
in
nascent
stages.
This
review
comprehensively
explores
pivotal
factors
required
practically
apply
bias‐free
electrochemical
water
splitting
current
research.
It
delves
into
fundamental
principles
involved
components,
configuration
structure
varied
integration
degree
systems,
differences
composition
level
devices,
system
reaction
environment
electrolytic
system,
strategy
development
refinement
electrocatalysts.
Furthermore,
offers
a
perspective
analysis
future
trajectories
each
component.
work
aims
shed
light
scientific
hurdles
exploration
prospects
faced
by
field
process
becoming
practical.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Июль 11, 2024
Abstract
Long-term
societal
prosperity
depends
on
addressing
the
world’s
energy
and
environmental
problems,
photocatalysis
has
emerged
as
a
viable
remedy.
Improving
efficiency
of
photocatalytic
processes
is
fundamentally
achieved
by
optimizing
effective
utilization
solar
enhancing
efficient
separation
photogenerated
charges.
It
been
demonstrated
that
fabrication
III–V
semiconductor-based
photocatalysts
in
increasing
light
absorption,
long-term
stability,
large-scale
production
promoting
charge
transfer.
This
focused
review
explores
current
developments
semiconductor
materials
for
solar-powered
systems.
The
various
subjects,
including
advancement
semiconductors,
mechanisms,
their
uses
H
2
conversion,
CO
reduction,
remediation,
oxidation
reduction
reactions.
In
order
to
design
heterostructures,
delves
into
basic
concepts
absorption
separation.
also
highlights
significant
advancements
green
systems
water
splitting,
emphasizing
significance
establishing
eco-friendly
hydrogen
production.
main
purpose
produce
through
sustainable
ecologically
friendly
conversion.
intends
foster
development
greener
more
source
encouraging
researchers
developers
focus
practical
applications
photocatalysis.
