Catalysts,
Journal Year:
2024,
Volume and Issue:
14(11), P. 757 - 757
Published: Oct. 26, 2024
A
stable
and
efficient
porous
nickel
phosphate
(p-NiPO/Ti)
electrocatalyst
on
titanium
sheets
was
developed
via
electrochemical
deposition
low-temperature
phosphatization.
For
obtaining
the
optimal
performance
of
p-NiPO/Ti
electrocatalyst,
optimized
experimental
parameters
phosphatization
were
determined
by
parallel
experiments.
After
preparation,
XPS
XRD
used
to
validate
chemical
amorphous
structure,
with
SEM
TEM
simultaneously
validating
a
distinct
nanosheet/nanocluster
crosslinked
microstructure.
In
particular,
conditions
maintained
at
300
°C
for
10
min,
produced
demonstrated
excellent
charge
transfer
catalytic
characteristics
in
1.0
M
KOH.
The
electrocatalytic
results
revealed
that
stability
(~24
h)
needs
lower
HER
overpotentials
(128
mV
mA
cm−2
242
100
cm−2)
as
inputs.
This
research
provides
promising
strategy
which
use
transition
metal
materials
catalysts
alkaline
hydrogen
production.
Langmuir,
Journal Year:
2024,
Volume and Issue:
40(23), P. 12097 - 12106
Published: May 30, 2024
Antimony
sulfide
(Sb2S3)
has
been
recognized
as
a
catalytic
material
for
splitting
water
by
solar
energy
because
of
its
suitable
narrow
band
gap,
high
absorption
coefficient,
and
abundance
elements.
However,
many
deep-level
defects
in
Sb2S3
result
significant
recombination
photoexcited
electron–hole
pairs,
weakening
photoelectrochemical
performance.
Here,
using
simple
hydrothermal
spin-coating
method,
we
fabricated
step-scheme
heterojunction
Sb2S3/α-Fe2O3
to
improve
the
performance
pure
Sb2S3.
Our
photoanode
photocurrent
density
1.18
mA/cm2
at
1.23
V
vs
reversible
hydrogen
electrode,
1.39
times
higher
than
that
(0.84
mA/cm2).
In
addition,
our
lower
onset
potential,
absorbance
intensity,
incident
photon-to-current
conversion
efficiency,
applied
bias
charge
transfer
resistance
compared
Based
on
ultraviolet
photoelectron
spectroscopy,
constructed
structure
explain
enhancement.
This
work
offers
promising
strategy
optimize
photoelectrodes
solar-driven
splitting.
