ACS Applied Nano Materials,
Год журнала:
2023,
Номер
7(16), С. 18398 - 18409
Опубликована: Дек. 1, 2023
The
reforming
reactions
of
greenhouse
gases
require
catalysts
with
high
reactivity,
coking
resistance,
and
structural
stability
for
efficient
durable
use.
Among
the
possible
strategies,
exsolution
has
been
shown
to
demonstrate
requirements
needed
produce
appropriate
dry
methane,
conversion
which
strongly
depends
on
choice
active
species,
its
interaction
support,
catalyst
size
dispersion
properties.
Here,
we
exploit
approach,
known
stable
highly
nanoparticle-supported
catalysts,
develop
iridium-nanoparticle-decorated
perovskites
apply
them
as
methane.
By
studying
effect
several
parameters,
tune
degree
exsolution,
consequently
catalytic
activity,
thereby
identifying
most
sample,
0.5
atomic
%
Ir-BaTiO3,
showed
82%
86%
CO2
CH4,
respectively.
comparison
standard
impregnated
(e.g.,
Ir/Al2O3),
benchmark
activity
our
exsolved
systems.
We
find
almost
identical
syngas
rates
formation
but
observe
no
carbon
deposition
samples
after
testing;
such
was
significant
traditionally
prepared
Ir/Al2O3,
30
mgC/gsample
measured,
compared
0
detected
system.
These
findings
highlight
possibility
achieving
in
a
single
step
mutual
parameters
enhancing
efficiency,
leading
promising
pathway
design
reactions.
Journal of the American Ceramic Society,
Год журнала:
2023,
Номер
107(2), С. 803 - 816
Опубликована: Ноя. 1, 2023
Abstract
For
practical
H
2
generation,
it
is
currently
difficult
to
create
modules
for
electrochemical
water
splitting
that
are
efficient
and
inexpensive
over
a
broad
pH
range.
In
this
study,
novel
ZnC
8
@NCNT
electrocatalyst
fabricated
via
simple
pyrolysis
of
melamine
with
zinc
chloride
carbon
nanotubes
(CNTs).
The
self‐assembled
hybrid
material
was
examined
catalyze
the
oxygen
evolution
reaction
(OER)
hydrogen
(HER)
in
an
alkaline
range,
responds
lower
OER
overpotential
245
mV,
smaller
Tafel
slope
50.0
mV
dec
−1
turnover
frequency
(TOF)
0.67
s
due
its
unique
structure.
HER
response
generated
quite
satisfactory
223
value
107
.
supported
by
conductive
CNTs
increases
catalytic
reactivity
synergistic
manner,
which
superior
performance
as
cutting‐edge
catalyst
electrolysis
electrolytic
cell.
Furthermore,
establishes
cost‐effective
alternative
expensive
Ir,
Pt,
Pd,
Ru‐based
catalysts.
Energy Advances,
Год журнала:
2023,
Номер
3(1), С. 14 - 29
Опубликована: Ноя. 16, 2023
Recent
advances
and
perspectives
of
Ir-based
anode
catalysts
in
PEM
water
electrolysis
are
highlighted,
it
is
concluded
that
the
anti-dissolution
stability
improvement
Ir
active
species
should
be
carefully
considered
for
catalyst
design
future.
As
the
anode
reaction
of
proton
exchange
membrane
water
electrolysis
(PEMWE),
acidic
oxygen
evolution
(OER)
is
one
main
obstacles
to
practical
application
PEMWE
due
its
sluggish
four-electron
transfer
process.
The
development
high-performance
OER
electrocatalysts
has
become
key
improving
kinetics.
To
date,
although
various
excellent
have
been
widely
researched,
Ir-based
nanomaterials
are
still
state-of-the-art
electrocatalysts.
Hence,
a
comprehensive
and
in-depth
understanding
mechanism
crucial
for
precise
optimization
catalytic
performance.
In
this
review,
origin
nature
conventional
adsorbate
(AEM)
derived
volcanic
relationship
on
processes
summarized
some
strategies
based
AEM
introduced.
further
investigate
strategy
electrocatalysts,
several
unconventional
mechanisms
including
dual-site
lattice
mediated
mechanism,
their
applications
introduced
in
detail.
Thereafter,
active
species
at
classified
into
surface
Ir
O
species.
Finally,
future
direction
prospect
put
forward.
Energy Reviews,
Год журнала:
2024,
Номер
3(4), С. 100103 - 100103
Опубликована: Июль 16, 2024
This
article
presents
a
strategy
for
enhancing
the
catalytic
performance
and
stability
of
anodic
electrocatalysts
in
proton
exchange
membrane
(PEM)
water
splitting.
PEM
splitting
is
sustainable
method
producing
hydrogen
oxygen
from
utilizing
electrocatalysts.
However,
employed
this
process
are
crucial
its
commercialization
due
to
harsh
condition
causing
low
stability.
The
main
focus
review
strategies
improving
as
well
electrocatalysts,
such
doping
with
heteroatoms,
alloying
other
metals.
results
demonstrate
that
these
modifications
can
significantly
enhance
These
open
new
possibilities
development
efficient
stable
splitting,
paving
way
widespread
use
clean
energy
applications.
Catalysis Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Ir–FeO
x
/rutile
catalysts
are
effective
for
both
cinnamaldehyde
hydrogenation
and
polyol
hydrogenolysis.
Supplying
Fe
m
+
as
adsorption
site
is
more
hydrogenation,
while
0
important
in
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
12(4), С. 2491 - 2500
Опубликована: Дек. 18, 2023
A
rational
approach
to
understand
the
catalytic
superiority
of
Ir
1
/NiCr
LDH
single
atom
catalyst
over
state-of-art
IrO
2
for
oxygen
evolution
reaction
via
electronic
modulation
effect
atomic
sites.
