ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(12), P. 14452 - 14457
Published: June 7, 2024
Molybdenum
carbides
have
great
potential
as
cost-effective
electrocatalysts
for
the
hydrogen
evolution
reaction
(HER)
due
to
their
platinum-like
catalytic
behavior.
However,
it
is
challenging
prepare
molybdenum
using
nontoxic
and
processes.
Here,
a
direct
laser-induced
precursor-free
process
developed
synthesize
HER
catalysts.
Attributing
self-assembly
mechanism,
gelatin-mediated
metal-ion
matrix
can
be
converted
hierarchically
porous
(MoCx)
under
high-temperature
carbonization
process.
The
resulting
MoCx
exhibits
excellent
stability
activity
HER,
with
an
overpotential
of
170
mV
at
10
mA
cm–2.
laser-based,
scalable,
robust,
manufacturing
could
extended
other
various
applications.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(5), P. 3320 - 3335
Published: Feb. 16, 2024
Nowadays,
the
assembling
of
hybrid
water
electrolysis
using
a
hydrazine
oxidation
reaction
(HzOR)
instead
slow
anodic
oxygen
evolution
(OER)
has
been
established
as
favorable
technology
for
efficient
hydrogen
(H2)
production.
Nevertheless,
it
is
still
critical
to
develop
highly
effective
bifunctional
electrocatalysts
both
(HER)
and
HzOR.
In
this
work,
we
propose
facile
approach
design
synthesis
single-Pd-nanoparticles-decorated
bimetallic
NiCo2O4
nanoplates
electrocatalyst
HER
Initially,
are
synthesized
by
combination
hydrothermal
high-temperature
calcination.
Subsequently,
single-Pd
nanoparticles
with
varying
proportions
decorated
on
via
pulsed
laser
irradiation
(PLI),
leading
formation
Pd/NiCo2O4
composites.
The
optimized
composite
shows
remarkable
electrocatalytic
ability
low
overpotential
294
mV
an
ultrasmall
working
potential
−6
(vs
RHE)
HzOR
at
10
mA
cm–2
in
1
M
KOH
electrolyte.
Thus,
overall
splitting
(OHzS)
electrolyzer
Pd/NiCo2O4∥Pd/NiCo2O4
system
presents
current
densities
100
respective
cell
voltages
0.35
0.94
V.
Notably,
situ/operando
Raman
spectroscopy
confirms
surface
α-Co(OH)2
during
γ-NiOOH
Furthermore,
density
function
theory
(DFT)
calculations
demonstrate
that
decoration
Pd
onto
facilitates
optimization
adsorption
free
energy
(ΔGH*)
enhancement
dehydrogenation
kinetics.
This
work
introduces
strategy
fabricating
electrocatalysts,
potentially
useful
energy-saving
H2
Journal of Materials Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
We
introduce
high-entropy
single-atom
catalysts
(HESACs)
from
FeRuPtNiCoPd
HEA
on
GO
via
pulsed
laser
irradiation
in
liquids.
Synergistic
interactions
and
rapid
Fe
2+
photoreduction
enhance
active
sites,
achieving
superior
overall
water
splitting.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(25)
Published: April 15, 2024
The
anodic
methanol
oxidation
reaction
(MOR)
plays
a
crucial
role
in
coupling
with
the
cathodic
hydrogen
evolution
(HER)
and
enables
sustainable
production
of
high-valued
formate.
Nickel-based
hydroxide
(Ni(OH)
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 3, 2025
A
hybrid
nanoporous
carbon
alloy
material
is
synthesized
using
a
core-shell
structure
based
on
metal-organic
frameworks,
revealing
novel
graphene
polyhedral
form.
The
presence
of
and
metal
as
doped
cobalt
carbides
morphed
within
the
polyhedra
confirmed
through
combination
X-ray
diffraction,
photoelectron
spectroscopy,
transmission
electron
microscopy,
Raman
spectroscopy
analyses.
These
exhibit
magnetoelectric
coupling
properties
at
room
temperature.
magnetic
state
control
verified
probe;
changes
in
increased
with
higher
applied
bias,
poling
direction
phase
reversed
scanning
probe.
This
discovery
holds
promise
for
future
applications
ultrafast
devices
carbon-based
spintronics
research.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(9), P. 10779 - 10786
Published: May 1, 2024
Hybrid
nanoparticles
(NPs)
with
complex
morphology,
structure,
and
chemical
composition
are
considered
key
building
blocks
of
next-generation
optoelectronic
devices,
catalysts,
sensitizers/agents
for
diverse
biomedical
applications.
Laser
ablation
in
liquid
(LAL)
has
emerged
as
a
promising
route
to
design
produce
unique
nanocomposite
NPs,
yet
control
over
the
product's
size
structure
is
limited
by
tuning
laser
parameters
or
content
surrounding
liquid.
In
this
paper,
based
on
example
porous
Si
prepared
electrochemical
etching,
we
demonstrate
an
alternative
resulting
NPs
through
modification
target
material's
porosity.
particular,
showed
3-fold
reduction
LAL-synthesized
compared
product
obtained
common
monocrystalline
wafer.
The
produced
nanocrystalline
narrow
monomodal
distribution
average
diameter
around
200
nm,
which
cover
practically
relevant
range,
allowing
excitation
Mie
resonances
at
visible
near-IR
wavelengths.
Moreover,
adding
certain
controlled
amount
acid
metal
precursor
HAuCl4,
fabricated
core–satellites
Au–Si
via
similar
facile
single-pot
reactive
synthesis.
incorporation
Au
into
was
found
enhance
light-to-heat
conversion
performance
nanohybrids,
confirmed
numerical
modeling
single-particle
micro-Raman
thermometry
785
nm
wavelength
matching
NIR-I
biological
transparency
window.
results
pave
way
toward
milligram-scale
production
pure
hybrid
Si-based
Mie-resonant
photonic,
optoelectronic,
sensing,
applications,
while
highlighting
additional
degree
freedom
characteristics.
