Abstract
The
development
of
effective
strategies
to
enhance
the
activity
and
selectivity
Cu‐based
catalysts
for
CO
2
reduction
reaction
(CO
RR)
remains
a
critical
challenge,
particularly
on
relatively
inert
Cu
facets
that
are
highly
active
in
competitive
hydrogen
evolution
(HER).
In
this
study,
series
Cu‐M
(M
=
Au,
Ag,
Pd)
bimetallic
tandem
interfaces
fabricated
nanocolumn
arrays
(Cu
NCAs)
with
predominantly
exposed
(200)
facets.
These
excited
significant
number
+
species
modulated
adsorption
behavior
intermediates
RR,
resulting
improved
RR
substantial
HER.
Notably,
Cu‐Au,
Cu‐Ag,
Cu‐Pd
NCAs
displayed
excellent
C
H
4
,
CO,
HCOOH
products,
optimized
faradaic
efficiency
(FE)
≈43.2,
≈48.0,
≈50.7%,
respectively.
According
situ
spectroscopic
analysis,
each
interface
exhibited
distinct
catalytic
pathways:
Cu‐Au
favored
*COOH
*CO
followed
by
C‐C
coupling
production,
Cu‐Ag
promoted
desorption
generation,
facilitated
*OCHO
formation
production.
This
study
provides
strategy
design
high‐performance
more
practical
electrodes
directly
modifying
various
commercial
substrates.
Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Фев. 28, 2025
Abstract
Although
supported
solid
amine
adsorbents
have
attracted
great
attention
for
CO
2
capture,
critical
chemical
deactivation
problems
including
oxidative
degradation
and
urea
formation
severely
restricted
their
practical
applications
flue
gas
capture.
In
this
work,
we
reveal
that
the
nature
of
surface
hydroxyl
groups
(metal
Al–OH
nonmetal
Si–OH)
plays
a
key
role
in
mechanisms.
The
polyethyleneimine
(PEI)
on
Al–OH-containing
substrates
suffers
from
severe
during
capture
step
due
to
breakage
amine-support
hydrogen
bonding
networks,
but
exhibits
an
excellent
anti-urea
feature
by
preventing
dehydration
carbamate
products
under
pure
regeneration
atmosphere.
contrast,
PEI
Si–OH-containing
anti-oxidative
stability
simulated
conditions
forming
robust
protective
network
with
Si–OH,
obvious
step.
We
also
problem
PEI-SBA-15
can
be
avoided
incorporation
OH-containing
PEG
additive.
Based
intrinsic
understanding
mechanisms,
successfully
synthesized
adsorbent
40PEI-20PEG-SBA-15
demonstrates
outstanding
retention
high
capacity
2.45
mmol
g
−1
over
1000
adsorption–desorption
cycles,
together
negligible
loss
aging
(10%
+
5%
O
3%
H
O)
one
month
at
60–70
°C.
believe
work
makes
contribution
advancement
field
ultra-stable
amine-based
materials.
Catalysts,
Год журнала:
2025,
Номер
15(3), С. 237 - 237
Опубликована: Март 1, 2025
In
recent
years,
the
electrochemical
conversion
of
CO2
gasses
into
renewable
fuels
(e.g.,
ethylene,
ethanol,
and
propanol)
has
attracted
much
attention.
this
process,
electrocatalysts
play
a
crucial
role
in
accelerating
reduction
reaction
(CO2RR)
process.
review,
synthesis
C2+
products
from
was
investigated.
To
end,
various
classifications
such
as
metals,
metal
oxides,
alloys,
covalent
organic
frameworks
(COFs),
carbon-based
electrocatalysts,
metal–organic
(MOFs)
their
utilization
chemicals
were
fully
Also,
impact
factors
catalyst
stability,
temperature,
membrane
type,
pressure,
current
density,
pH,
type
electrolyte
on
CO2RR
process
to
generate
valuable
Moreover,
mechanism
for
producing
Furthermore,
limitations
future
perspective
surveyed.
Finally,
industrial
application
value-added
Based
our
investigation,
Cu
Cu2O-based
are
suitable
catalysts
products,
particularly
ethylene
ethanol.
Abstract
Benefiting
from
the
optimal
interaction
strength
between
Cu
and
reactants,
Cu‐based
catalysts
exhibit
a
unique
capability
of
facilitating
formation
various
multi‐carbon
products
in
electricity‐driven
CO
2
reduction
reactions
(CO
ERR).
Nonetheless,
ERR
process
on
these
is
characterized
by
intricate
polyproton‐electron
transfer
mechanisms
that
are
frequently
hindered
high
energy
barriers,
sluggish
reaction
kinetics,
low
C─C
coupling
efficiency.
This
review
employs
advanced
characterization
techniques,
such
as
sum
frequency
generation
technology,
to
provide
comprehensive
analysis
mechanism
surface,
examining
it
both
spatial
temporal
dimensions
proposing
spatial‐temporal
mechanism.
To
improve
efficiency,
series
regulatory
strategies
focused
surface
microenvironment,
catalyst
structure,
internal
electronic
thereby
offering
novel
insights
for
upcoming
design
enhancement
electrocatalysts.
Abstract
The
development
of
effective
strategies
to
enhance
the
activity
and
selectivity
Cu‐based
catalysts
for
CO
2
reduction
reaction
(CO
RR)
remains
a
critical
challenge,
particularly
on
relatively
inert
Cu
facets
that
are
highly
active
in
competitive
hydrogen
evolution
(HER).
In
this
study,
series
Cu‐M
(M
=
Au,
Ag,
Pd)
bimetallic
tandem
interfaces
fabricated
nanocolumn
arrays
(Cu
NCAs)
with
predominantly
exposed
(200)
facets.
These
excited
significant
number
+
species
modulated
adsorption
behavior
intermediates
RR,
resulting
improved
RR
substantial
HER.
Notably,
Cu‐Au,
Cu‐Ag,
Cu‐Pd
NCAs
displayed
excellent
C
H
4
,
CO,
HCOOH
products,
optimized
faradaic
efficiency
(FE)
≈43.2,
≈48.0,
≈50.7%,
respectively.
According
situ
spectroscopic
analysis,
each
interface
exhibited
distinct
catalytic
pathways:
Cu‐Au
favored
*COOH
*CO
followed
by
C‐C
coupling
production,
Cu‐Ag
promoted
desorption
generation,
facilitated
*OCHO
formation
production.
This
study
provides
strategy
design
high‐performance
more
practical
electrodes
directly
modifying
various
commercial
substrates.
