The
lack
of
high
efficiency
and
pH-universal
bifunctional
electrocatalysts
for
water
splitting
to
hydrogen
evolution
reaction
(HER)
oxygen
(OER)
hinders
the
large-scale
production
green
hydrogen.
Here,
an
IrPd
electrocatalyst
supported
on
ketjenblack
that
exhibits
outstanding
performance
both
HER
OER
at
wide
pH
conditions
is
presented.
optimized
catalyst
a
specific
activity
4.46
3.98
A
mgIr-1
in
overpotential
100
370
mV
OER,
respectively,
alkaline
conditions.
When
applied
anion
exchange
membrane
electrolyzer,
Ir44
Pd56
/KB
shows
stability
>20
h
current
250
mA
cm-2
decomposition,
indicating
promising
prospects
practical
applications.
Beyond
offering
advanced
electrocatalyst,
this
work
also
guides
rational
design
desirable
by
regulating
microenvironments
electronic
structures
metal
catalytic
sites
diverse
catalysis.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 6, 2024
Abstract
The
proactive
exploration
of
electrocatalytic
conversion
for
renewable
energy
valorization
is
tremendous
significance
in
addressing
the
issues
fossil
exhaustion,
among
which
critical
challenge
electrocatalysis
lies
rational
design
efficient
electrocatalysts
that
are
rich
earth.
Among
electrocatalysts,
heterostructured
materials
exhibits
immense
potential
optimization
noble
metals
and
elaboration
non‐precious
metal
with
durability.
In
this
review,
a
systematic
overview
modern
advances
range
reactions
described,
special
interfacial
brings
additional
functional
effects.
Subsequently,
various
synthesis
methods
characterization
techniques
also
summarized.
innovative
classification
heterostructures
junction,
crystal
structure,
structural
morphology,
properties
components
presented
review.
Finally,
possible
challenges
outlooks
future
further
discussed,
including
how
to
develop
more
sophisticated
synthesis,
characterization,
theoretical
calculation
methods,
will
serve
as
guiding
direction
interface
design.
This
review
aims
set
trajectory
providing
meaningful
inspiration
references
by
advancing
process
carbon
neutrality.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(17), С. 10300 - 10306
Опубликована: Янв. 1, 2024
Pt/rGNP
exhibits
much
higher
catalytic
properties
than
other
transition
metal/rGNP
catalysts
for
hydrogen
evolution;
its
overpotential
at
100
mA
cm
−2
in
0.5
M
H
2
SO
4
is
only
10.6
mV,
and
Tafel
slope
14.53
mV
dec
−1
.
Advanced Materials,
Год журнала:
2023,
Номер
35(30)
Опубликована: Июнь 3, 2023
Semiconductor-based
gas
sensors
hold
great
promise
for
effective
carbon
monoxide
(CO)
detection.
However,
boosting
sensor
response
and
selectivity
remains
a
key
priority
in
moist
conditions.
In
this
study,
composite
material,
Pt
quantum
dots
decorated
MoS2
nanosheets
(MoS2
/Pt),
is
developed
as
highly
sensitive
material
CO
detection
when
facilitated
with
visible
light.
The
/Pt
shows
significantly
improved
(87.4%)
impressive
response/recovery
kinetics
(20
s/17
s),
long-term
stability
(60
days),
good
to
at
high
humidity
(≈60%).
It
confirmed
both
experimentally
theoretically
that
the
surface
lowers
activation
energy
convert
CO2
via
free
radicals
induced
by
synergy
of
photochemical
effects
water
vapor.
As
result,
promotes
selectivity,
providing
fundamental
clues
improve
room-temperature
semiconductor-based
under
extreme
Amorphous/crystalline
(a/c)
hetero-phase
structures
are
considered
as
a
class
of
efficient
electrocatalysts
for
hydrogen
evolution
reaction
(HER),
but
it
remains
substantial
challenge
to
obtain
the
specific
phase
by
phase-selective
synthesis.
In
this
work,
general
route
preparation
various
heterogeneous
aerogels
(RuB,
PtB,
PdB,
and
RhB)
consisting
amorphous
crystalline
phases
is
presented
through
controlled
NaBH4
reduction
method.
The
prepared
a/c-RuB
aerogel
exhibits
better
HER
performance
due
their
desirable
compositional
structural
advantages
such
more
exposed
active
sites,
optimized
electronic
structure,
interfacial
synergistic
effects.
It
requires
only
low
overpotential
39
mV
reach
density
10
mA
cm-2
also
excellent
stability.
This
work
provides
new
synthesis
strategy
design
development
advanced
electrocatalysts.
