Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 22, 2024
Abstract
Exploring
an
appropriate
support
material
for
Cu‐based
electrocatalyst
is
conducive
stably
producing
multi‐carbon
chemicals
from
electroreduction
of
carbon
monoxide.
However,
the
insufficient
metal‐support
adaptability
and
low
conductivity
would
hinder
C−C
coupling
capacity
energy
efficiency.
Herein,
non‐stoichiometric
Ti
4
O
7
was
incorporated
into
Cu
electrocatalysts
(Cu−Ti
),
served
as
a
highly
conductive
stable
energy‐efficient
electrochemical
conversion
CO.
The
abundant
oxygen
vacancies
originated
ordered
lattice
defects
in
facilitate
water
dissociation
CO
adsorption
to
accelerate
hydrogenation
*COH.
adaptable
interface
Cu−Ti
enables
direct
asymmetrical
between
*CO
on
*COH
,
which
significantly
lowers
reaction
barrier
C
2+
products
formation.
Additionally,
excellent
electroconductivity
benefits
charge
transfer
through
robust
Cu/Ti
minimizing
loss.
Thus,
optimized
20Cu−Ti
catalyst
exhibits
impressive
selectivity
96.4
%
ultrahigh
efficiency
45.1
products,
along
with
remarkable
partial
current
density
432.6
mA
cm
−2
.
Our
study
underscores
novel
strategy
material,
advancing
development
Cu‐supported
catalysts
efficient
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 27, 2025
The
electrochemical
CO2
reduction
reaction
(CO2RR)
to
produce
multicarbon
(C2+)
hydrocarbons
or
oxygenate
compounds
is
a
promising
route
obtain
renewable
fuel
valuable
chemicals;
however,
producing
C2+
at
high
current
densities
still
challenge.
Herein,
we
design
hierarchically
structured
tandem
catalysis
electrode
for
greatly
improved
catalytic
activity
and
selectivity
products.
constructed
of
sputtered
Ag
nanoparticle
layer
on
hydrophobic
polytetrafluoroethylene
(PTFE)
membrane
nitrogen-doped
carbon
(NC)-modified
Cu
nanowire
arrays.
arrays
are
in
situ
grown
PTFE
by
oxidation
CuAl
alloy,
which
the
chemical
etching
metal
Al
induces
formation
array
structure.
Within
hierarchical
configuration,
CO
can
be
efficiently
generated
an
active
then
spillover
transfer
NC-modified
layer,
Cu/NC
interfaces
enhance
*CO
trapping
adsorption.
During
CO2RR,
optimized
achieves
superior
Faradaic
efficiencies
53.5%
87.5%
ethylene
(C2H4)
products
density
519.0
mA
cm–2,
respectively,
with
C2+/C1
ratio
10.42
long-term
stability
up
50
h.
In
Raman
attenuated
total
reflection-surface
enhanced
infrared
absorption
spectroscopy
(ATR-SEIRAS)
confirm
that
Ag–Cu–NC
system
significantly
enhances
linear
adsorption
intermediates
dissociation
H2O,
improves
C–C
coupling
capability,
stabilizes
key
intermediate
*OCCOH
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(21), P. 12006 - 12085
Published: Oct. 31, 2024
Catalytic
COx
(CO
and
CO2)
hydrogenation
to
valued
chemicals
is
one
of
the
promising
approaches
address
challenges
in
energy,
environment,
climate
change.
H2O
an
inevitable
side
product
these
reactions,
where
its
existence
effect
are
often
ignored.
In
fact,
significantly
influences
catalytic
active
centers,
reaction
mechanism,
performance,
preventing
us
from
a
definitive
deep
understanding
on
structure-performance
relationship
authentic
catalysts.
It
necessary,
although
challenging,
clarify
provide
practical
strategies
tune
concentration
distribution
optimize
influence.
this
review,
we
focus
how
induces
structural
evolution
catalysts
assists
processes,
as
well
efforts
understand
underlying
mechanism.
We
summarize
discuss
some
representative
tuning
for
realizing
rapid
removal
or
local
enrichment
around
catalysts,
along
with
brief
techno-economic
analysis
life
cycle
assessment.
These
fundamental
understandings
further
extended
reactions
CO
CO2
reduction
under
external
field
(light,
electricity,
plasma).
also
present
suggestions
prospects
deciphering
controlling
applications.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 27, 2025
Abstract
The
electrocatalytic
conversion
of
CO
2
into
valuable
multi‐carbon
(C
2+
)
products
using
Cu‐based
catalysts
has
attracted
significant
attention.
This
review
provides
a
comprehensive
overview
recent
advances
in
catalyst
design
to
improve
C
selectivity
and
operational
stability.
It
begins
with
an
analysis
the
fundamental
reaction
pathways
for
formation,
encompassing
both
established
emerging
mechanisms,
which
offer
critical
insights
design.
In
situ
techniques,
essential
validating
these
by
real‐time
observation
intermediates
material
evolution,
are
also
introduced.
A
key
focus
this
is
placed
on
how
enhance
through
manipulation,
particularly
emphasizing
catalytic
site
construction
promote
C─C
coupling
via
increasing
*
coverage
optimizing
protonation.
Additionally,
challenge
maintaining
activity
under
conditions
discussed,
highlighting
reduction
active
charged
Cu
species
materials
reconstruction
as
major
obstacles.
To
address
these,
describes
strategies
preserve
sites
control
including
novel
utilization
mitigation
reconstruction.
By
presenting
developments
challenges
ahead,
aims
guide
future
conversion.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 15, 2025
Electricity-powered
C─C
coupling
of
CO2
represents
an
attractive
strategy
for
producing
valuable
commodity
chemicals
with
renewable
energy,
but
it
is
still
challenging
to
gain
high
C2+
selectivity
at
current
density.
Here,
a
Sn1Cu
single-atom
alloy
(SAA)
reported
isolated
Sn
atom
embedded
into
the
Cu
lattice,
as
efficient
ectrocatalyst
reduction.
The
prepared
Sn1Cu-SAA
catalyst
shows
maximal
Faradaic
efficiency
79.3%
800
mA
cm-2,
which
can
be
kept
stable
least
16
h.
combination
in
situ
spectroscopy
and
DFT
calculation
reveal
that
introduced
promote
activation
*CO,
enhance
CO
coverage
on
Sn1Cu-SAA.
As
results,
reaction
barrier
pathway
significantly
reduced,
boosting
generation
products.
These
findings
offer
novel
sight
fabricating
multicarbon
products
from
via
regulation
concentration
intermediates
catalytic
interface.
