Abstract
Copper‐based
bimetallic
heterojunction
catalysts
facilitate
the
deep
electrochemical
reduction
of
CO
2
(eCO
RR)
to
produce
high‐value‐added
organic
compounds,
which
hold
significant
promise.
Understanding
influence
copper
interactions
with
other
metals
on
adsorption
strength
various
intermediates
is
crucial
as
it
directly
impacts
reaction
selectivity.
In
this
review,
an
overview
formation
mechanism
catalytic
products
in
eCO
RR
provided
and
highlight
uniqueness
copper‐based
catalysts.
By
considering
different
metals'
tendencies
toward
intermediates,
are
classified,
including
copper,
into
four
categories.
The
significance
advantages
constructing
then
discussed
delve
research
findings
current
development
status
types
Finally,
insights
offered
design
strategies
for
future
high‐performance
electrocatalysts,
aiming
contribute
multi‐carbon
fuels
high
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 5, 2025
Multi-proton-coupled
electron
transfer,
multitudinous
intermediates,
and
unavoidable
competing
hydrogen
evolution
reaction
during
CO2
electroreduction
make
it
tricky
to
control
high
selectivity
for
specific
products.
Here,
we
present
spatial
confinement
of
Fe
single
atoms
(FeN2S2)
by
adjacent
FeS
clusters
(Fe4S4)
orientate
the
transition
adsorption
configuration
from
C,O-side
O-end,
which
triggers
a
shift
activated
first-step
protonation
C–C
coupling,
thus
switching
target
product
HCOOH
in
Faraday
efficiency
(FE:
90.6%)
on
FeN2S2
CH3COOH
82.3%)
Fe4S4/FeN2S2.
The
strength
*OCHO
upon
solitary
site
is
linearly
related
coordination
number
Fe–S,
with
predominantly
produced
over
single-atom
(ortho-substituted
S
atoms).
Fe4S4
cluster
functions
as
switch
reduction
product,
can
not
only
optimize
electronic
structure
neighboring
but
also
impel
complete
hydrocarbon
intermediate
*CH3,
followed
coupling
CO2*
*CH3
via
synergistic
catalysis
This
strategy
provides
new
avenue
modulate
reactant
model
desirable
pathways,
potential
applications
diverse
multistep
electrochemical
processes
controlled
selectivity.
ACS Energy Letters,
Год журнала:
2025,
Номер
10(1), С. 600 - 619
Опубликована: Янв. 2, 2025
The
electrochemical
reduction
reaction
of
CO2
(eCO2RR)
to
chemicals
presents
a
viable
solution
for
addressing
climate
change
and
sustainable
manufacturing.
In
this
Review,
we
describe
the
recent
advancements
in
eCO2RR
multicarbon
(C2+)
production
from
aspects
catalyst
structure,
microenvironments,
mechanistic
understanding.
We
draw
experimental
theoretical
comparisons
between
systems
containing
bulk
highly
dispersed
metals,
alloys,
metal
compounds
recount
new
results
microenvironmental
impacts
as
well
catalytic
mechanism.
From
our
own
studies,
offer
some
viewpoints
on
electrocatalytic
mechanism
during
complex
multistep
proton-coupled
electron
transfers
propose
several
research
directions
unlocking
full
potential
scalable
industrial
CO2-to-C2+
conversion.
The
electrocatalytic
reduction
of
CO2
(CO2RR)
to
high-value
chemicals
and
fuels
offers
a
promising
route
for
clean
carbon
cycle.
However,
it
often
suffers
from
low
catalytic
activity
poor
selectivity.
Heterostructure
construction
has
been
shown
be
an
effective
strategy
producing
multi-carbon
products,
but
the
synergistic
mechanisms
between
multiple
active
sites
resulting
reconstruction
process
remain
unclear.
In
this
study,
Ga2O3/CuO
heterostructure
is
established
via
simple
sol-gel
method
produce
C2+
products.
Experimental
results
demonstrate
that
Ga2O3
stabilizes
Cu+
form
Cu0/Cu+/Ga
centers
enhances
water-splitting
ability
during
reaction.
improved
hydrogen
absorption
on
Ga
site
shifts
C─C
coupling
reaction
pathway
*OCCO
asymmetric
*OCCHO
path
with
lower
energy
barrier.
As
result,
catalysts
exhibit
superior
CO2RR
performance,
achieving
70.1%
Faradaic
efficiency
at
-1.2
VRHE
in
flow
cell,
ethylene
reaching
58.3%
remaining
stable
10
h.
Nano-Micro Letters,
Год журнала:
2023,
Номер
16(1)
Опубликована: Ноя. 6, 2023
Abstract
Electrochemical
carbon
dioxide
reduction
reaction
(CO
2
RR)
involves
a
variety
of
intermediates
with
highly
correlated
and
ad-desorption
energies,
hindering
optimization
the
catalytic
activity.
For
example,
increasing
binding
*COOH
to
active
site
will
generally
increase
*CO
desorption
energy.
Breaking
this
relationship
may
be
expected
dramatically
improve
intrinsic
activity
CO
RR,
but
remains
an
unsolved
challenge.
Herein,
we
addressed
conundrum
by
constructing
unique
atomic
dispersed
hetero-pair
consisting
Mo-Fe
di-atoms
anchored
on
N-doped
carrier.
This
system
shows
unprecedented
RR
TOF
3336
h
−1
,
high
selectivity
toward
production,
Faradaic
efficiency
95.96%
at
−
0.60
V
excellent
stability.
Theoretical
calculations
show
that
diatomic
sites
increased
intermediate
adsorption
energy
bridging
intermediates.
At
same
time,
d-d
orbital
coupling
in
di-atom
results
electron
delocalization
facilitates
Thus,
undesirable
correlation
between
these
steps
is
broken.
work
provides
promising
approach,
specifically
use
di-atoms,
for
breaking
unfavorable
relationships
based
understanding
mechanisms
scale.
Abstract
Ammonia
serves
as
a
crucial
chemical
raw
material
and
hydrogen
energy
carrier.
Aqueous
electrocatalytic
nitrogen
reduction
reaction
(NRR),
powered
by
renewable
energy,
has
attracted
tremendous
interest
during
the
past
few
years.
Although
some
achievements
have
been
revealed
in
aqueous
NRR,
significant
challenges
also
identified.
The
activity
selectivity
are
fundamentally
limited
activation
competitive
evolution.
This
review
focuses
on
hurdles
of
delves
into
complementary
strategies,
including
materials
design
system
optimization
(reactor,
electrolyte,
mediator).
Then,
it
introduces
advanced
interdisciplinary
technologies
that
recently
emerged
for
using
high‐energy
physics
such
plasma
triboelectrification.
With
better
understanding
corresponding
mechanisms
coming
years,
these
potential
to
be
extended
further
applications.
provides
insight
stability
different
systems.
We
then
recommend
rigorous
detailed
protocol
investigating
NRR
performance
highlight
several
research
directions
this
exciting
field,
coupling
with
applications,
situ/operando
characterizations,
theoretical
calculations.
EcoEnergy,
Год журнала:
2024,
Номер
2(1), С. 3 - 21
Опубликована: Янв. 26, 2024
Abstract
Electrochemical
CO
2
reduction
reaction
(CO
RR)
has
attracted
much
attention
in
the
last
decade,
owing
to
its
unique
advantages
such
as
operation
at
ambient
conditions,
coupling
with
renewable
electricity,
and
producing
a
wide
range
of
products
commodities.
The
majority
RR
studies
are
focused
on
pure
feed,
while
real
waste
streams,
flue
gas
or
biogas,
concentration
does
not
exceed
40%.
Therefore,
economic
feasibility
carbon
footprint
greatly
limited
by
purification
steps
before
electrolysis
($70–100
per
ton
for
/N
separation).
In
recent
years,
have
exhibited
importance
this
matter
integrating
capture
electroreduction
single
unit.
Mostly,
solutions
electrolytes
been
under
attention,
promising
results
achieved
significantly
improve
overall
economy
RR.
focus
capture‐electroreduction
integration
can
go
beyond
solution/electrolyte‐based
(e.g.,
amine
ionic
liquids)
other
processes
solid
adsorption
membrane‐based
processes,
more
efficient
options,
be
potentially
integrated
gas‐diffusion
electrode
design.
This
article
aims
review
efforts
provides
new
perspectives
material
selection
design
membrane‐
adsorption‐based
capture‐reduction
integration,
addition
analysis
integration.