ChemElectroChem,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 26, 2025
Engineering
catalyst
layer
structure
is
of
significant
importance
to
improve
the
performance
and
durability
proton
exchange
membrane
water
electrolysis
(PEMWE),
yet
rare
efficient
design
strategies
has
been
reported.
This
work
develops
an
in
situ
pore‐making
approach
construct
cross‐linked
porous
layer,
which
significantly
improves
active
site
utilization
compared
conventional
(CCL).
The
electrochemical
activity
area
electrode
assemblies
(MEA)
(52.22
cm
2
mg
Ir
−1
)
2.10
times
higher
than
that
CCL‐MEA
(24.90
),
indicates
more
sites
are
exposed
during
process,
leading
efficiency
electrocatalyst.
As
a
result,
exhibits
high
current
density
3.8
A
−2
at
1.9
V,
exceeding
U.S.
Department
Energy
2025
target
(3
@1.9
V),
shows
superior
with
no
degradation
after
1600
h
operation
constant
load
.
Scanning
electron
microscope
analysis
confirms
structural
integrity
while
cracks
formed
CCL
testing.
These
results
highlight
benefits
improving
mass
transport,
stability,
overall
PEMWE
applications.
Nanomaterials,
Journal Year:
2025,
Volume and Issue:
15(5), P. 361 - 361
Published: Feb. 26, 2025
The
periodical
distribution
of
N
and
C
atoms
in
carbon
nitride
(CN)
not
only
results
localized
electrons
each
tri-s-triazine
unit,
but
oxidation
reduction
sites
are
close
contact
spatially,
resulting
severe
carrier
recombination.
Herein,
the
hydrothermal
method
was
first
employed
to
synthesize
(HCN),
then
picolinamide
(Pic)
molecules
were
introduced
at
edge
so
that
photo-generated
whole
structure
system
transferred
from
center
edge,
which
effectively
promoted
separation
carriers
inhibited
recombination
structure.
changed
π-conjugated
entire
also
acted
as
an
electron-withdrawing
group
promote
charge
transfer.
photocatalytic
hydrogen
evolution
rate
(HER)
optimized
HCN-Pic-1:1
sample
could
reach
918.03
μmolg-1
h-1,
11.8
times
higher
than
HCN,
performance
improved.
The
development
of
cost-effective
and
efficient
electrocatalysts
for
the
hydrogen
evolution
reaction
(HER)
is
critical
to
advancing
green
production
technologies.
Here,
we
present
a
plasmonic
tungsten
oxide
(W18O49)
material
integrated
with
ultralow
platinum
(Pt)
loadings
(0.4,
0.8,
1.6
wt
%)
that
delivers
high
HER
performances
under
both
dark
visible
light
conditions.
0.4
%
Pt–W18O49
catalyst
exhibits
remarkable
mass
activity,
outperforming
commercial
Pt/C
by
factors
15
30
740
nm
LED
illumination,
respectively.
Density
functional
theory
(DFT)
calculations
reveal
synergy
between
Pt
plasmonically
active
W18O49
optimizes
charge
transfer
adsorption,
resulting
in
lowered
energy
barriers
kinetics.
Furthermore,
excitation
enhances
catalytic
activity
facilitating
electron
transfer.
This
work
introduces
scalable,
strategy
combining
earth-abundant
materials
minimal
usage,
providing
pathway
toward
high-efficiency
catalysts.
These
findings
highlight
potential
plasmonic-catalyst
integration
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 1, 2025
Abstract
Selective
catalytic
reduction
of
NOx
with
hydrogen
(H2-SCR)
in
the
presence
oxygen
is
an
environmentally
friendly
and
sustainable
emission
control
technology
that
has
attracted
considerable
attention.
However,
even
most
promising
currently
available
catalysts
are
not
sufficiently
active
to
effectively
promote
this
reaction,
particularly
at
low
temperatures
(<
150°C).
Therefore,
there
urgent
need
for
development
highly
H2-SCR
catalysts.
Although
data-science
approaches,
including
machine
learning
(ML),
have
been
suggested
accelerate
such
important
processes,
discovery
unique
using
ML
remains
limited.
This
limitation
stems
from
a
common
criticism
ML,
namely,
its
perceived
inability
extrapolate
identify
extraordinary
materials.
Herein,
we
present
extrapolative
approach
new
multi-elemental
Starting
45
as
initial
dataset,
employed
closed-loop
system
combined
predictions
experimental
validation
over
24
iterative
cycles.
process
enabled
testing
425
catalysts,
ultimate
identification
several
superior
activity
(average
N₂
yield,
%)
previously
reported
high-performance
temperature
range
50–150°C.
The
optimal
catalyst
was
found
be
Pt(1.3)-Ir(0.2)/Ba(1.5)-Co(1)/H-ZSM-5(11).
Notably,
Co
absent
original
composition
could
predicted
by
human
experts.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 1, 2025
Synchronous
electrosynthesis
of
value-added
adipic
acid
(AA)
and
H2
is
extremely
crucial
for
carbon
neutrality.
However,
accomplishing
the
preparation
AA
at
large
current
density
with
high
selectivity
still
challenging.
Herein,
a
robust
Mo-doped
Ni2P@Ni12P5
heterojunction
more
P
vacancies
on
Ni
foam
proposed
simultaneous
electrooxidation
cyclohexanol
(CHAOR)
to
hydrogen
evolution
reaction
(HER)
density.
Combined
X-ray
photoelectron
spectroscopy,
absorption
fine
structure,
electron
spin
resonance
confirm
that
Mo
incorporation
induces
charge
redistribution
Ni2P@Ni12P5,
where
adjusts
electrons
from
P,
triggers
vacancies.
Further
experimental
theoretical
investigations
reveal
d-band
center
upshifted,
optimizing
adsorption
energies
water
electron-rich
site
boosting
HER
activity.
Besides,
Ni3+
generated
electron-deficient
induced
by
Mo,
alongside
OH*
triggered
concurrently
promote
CHA
dehydrogenation
C─C
bond
cleavage,
decreasing
energy
barrier
CHAOR.
Consequently,
two-electrode
flow
electrolyzer
achieves
industrial
(>230
mA
cm-2)
85.7%
yield,
100%
Faradaic
efficiency
production.
This
study
showcases
an
bifunctional
electrocatalyst
production
productivity.
