ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(45), P. 62131 - 62141
Published: Nov. 4, 2024
The
valorization
of
CO2
is
an
important
challenge
within
the
current
panorama,
since
this
molecule
probably
main
contributor
to
climate
change.
In
study,
synthesis
materials
based
on
a
nanostructured
batonnet-type
indium
oxide
carried
out.
them,
different
amounts
Co
are
introduced,
varying
between
2
and
8%
mol.
It
verified
that
most
active
sample
in
transformation
carbon
dioxide
monoxide
contains
6
mol
%.
Co.
This
sample's
activity
under
dual
excitation
exceeds
thermal
counterpart
by
more
than
30%.
After
carrying
out
complete
physical
chemical
characterization
with
help
X-ray
absorption
spectroscopy
other
techniques,
it
shown
catalysts
cobalt
equal
or
below
4
%
contain
isolated
single-atom
species,
while
those
higher
metal
display
Co–Co
interaction
which
triggers
evolution
samples
reaction
conditions.
optimum
control
nature
final
cobalt-containing
species
determine
photothermal
catalytic
properties.
work
establishes
structure–activity
relationship
interpret
behavior
highly
dispersed
subnanometric
thus
avenue
optimize
dioxide.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 16, 2025
Electrocatalytic
nitrate
reduction
to
ammonia
(eNRA)
is
a
promising
route
toward
environmental
sustainability
and
clean
energy.
However,
its
efficiency
often
limited
by
the
slow
conversion
of
intermediates
due
spin-forbidden
processes.
Here,
we
introduce
novel
A-site
high-entropy
strategy
develop
new
perovskite
oxide
(La0.2Pr0.2Nd0.2Ba0.2Sr0.2)CoO3-δ
(LPNBSC)
for
eNRA.
The
LPNBSC
possesses
higher
concentration
high-spin
(HS)
cobalt-active
centers,
resulting
from
an
increased
[CoO5]
structural
motifs
compared
conventional
LaCoO3.
Consequently,
this
material
exhibits
significantly
improved
electrocatalytic
performance
(NH3)
production,
in
3-fold
increase
yield
rate
(129
μmol
h–1
mgcat.–1)
2-fold
Faradaic
(FE,
76%)
LaCoO3
at
optimal
potential.
Furthermore,
LPNBSC-based
Zn-nitrate
battery
reaches
maximum
FE
82%
NH3
57
cm–2.
Density
functional
theory
calculations
reveal
that
management
perovskites
facilitates
activation
potentially
optimizes
thermodynamic
rate-determining
step
eNRA
process,
namely,
*HNO3
+
H+
e–
→
*NO2
H2O.
This
work
presents
efficient
concept
modulating
spin
state
B-site
metal
offers
valuable
insights
design
high-performance
catalysts.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 5, 2024
Abstract
Electrocatalysts
based
on
high‐valent
indium
are
promising
for
formate
production
via
CO
2
electroreduction.
However,
reconstruction
often
occurs
during
the
reaction
progress,
resulting
in
a
decline
catalytic
performance.
Here,
composite
of
In
O
3
/In
S
is
developed,
and
its
performance
exceeds
that
either
individual
phase,
particularly
stability.
Analysis
morphology,
valence
state,
situ
Raman
spectroscopy
reveals
well
preserved
reaction.
Theoretical
calculations
suggest
desorption
energy
lattice
oxygen
can
be
strengthened
due
to
‐In
bonding
within
composite.
This
reinforcement
facilitates
formation
more
active
sites
promotes
adsorption,
further
decreasing
barrier
only
0.12
eV.
As
result,
exhibits
selectivity
over
95.05%
at
–1.13
V
vs
reversible
hydrogen
electrode
accompanied
by
partial
current
density
434.4
mA
cm
–2
.
Notably,
maintains
95%
even
after
50
h
an
industrial‐level
200
,
17
times
longer
than
phase.
Furthermore,
18.33%
solar‐to‐formate
19.49%
solar‐to‐fuel
obtained
when
coupled
with
III‐V
solar
cells,
demonstrating
feasibility.
ACS Materials Letters,
Journal Year:
2025,
Volume and Issue:
unknown, P. 796 - 803
Published: Jan. 31, 2025
The
practical
application
of
electrocatalytic
CO2
reduction
requires
adaptation
to
the
fluctuating
voltage
output
photovoltaic
systems.
However,
potential-induced
in-situ
reconstruction
catalyst
complicates
control
and
leads
Faradaic
efficiency
(FE)
instability
across
potential
window.
Here,
we
present
a
redox
graphene-supported
indium
oxide
(G-InOx),
where
rGO
effectively
regulates
surface
evolution
InOx
from
In3+
In0
during
reactions.
multivalent
In
generated
via
lowers
energy
barriers
for
*OCHO
formation
dissociation,
enhancing
formate
production.
also
environment,
optimizing
proton
delivery
active
sites.
Over
wide
range
(−0.86
−1.37
V
vs
RHE),
G-InOx
achieves
FEformate
nearly
100%.
This
work
offers
straightforward
efficient
strategy
scalable,
high-performance
electroreduction.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 7, 2025
Abstract
Constructing
highly
efficient
bismuth
(Bi)‐based
catalysts
to
accelerate
the
sluggish
kinetic
process
of
CO
2
electroreduction
HCOOH
is
crucial
for
promoting
its
practical
application
but
also
challenging.
Herein,
cerium
oxide
catalyst
integrated
with
dual
active
centers
oxygen
vacancy
and
heterogeneous
interface
fabricated
facilitate
reduction
enhance
performance.
It
revealed
that
introduction
endows
a
remarkably
enhanced
adsorption
capacity
facilitates
transfer
more
electrons
*
.
Furthermore,
it
even
steers
reaction
pathway
favorably
toward
production.
The
optimization
adsorption,
activation,
energy
barriers
expedited
HCOOH.
As
expected,
this
exhibits
catalytic
performance
Faradaic
efficiency
97%
at
current
density
300
mA
cm
−2
This
work
highlights
significant
synergistic
advantages
vacancies
interfaces
in
optimizing
molecular
process.
